ELECTRICAL SYSTEM

Event Codes

Event Codes To ensure the Access 1 2 3® software is up-to-date,

use Access 1 and scroll to the Utilities menu. From
Access 1 2 3® Module Listing: here, the module and software part numbers applicable
Access 1: Display Control Module (DCM) to the lift truck are viewable.
Access 3™: Traction Control Module (TCM) No Event Code?
Access 4: Vehicle Control Module (VCM) When the lift truck malfunctions and no event code is
displayed, it usually means that the malfunction is not
Access 5: Steering Control Module (SCM)
electrical.
Access 6: Guidance Control Module (GCM)
If the lift truck powers up, but a code is not displayed,
the malfunction is probably mechanical or hydraulic
rather than electrical. Information regarding
mechanical and hydraulic troubleshooting is located in
CAUTION the appropriate section in this Manual.
To Locate Malfunctioning Components
When replacing an ACCESS module or updating mod-
ule software, verify settings and recalibrate as needed Component and Wiring Location Maps are provided at
strategic locations to help quickly determine the
.
physical location of items in question.
Some Troubleshooting Basics
All components are clearly marked at the connection
points.
Test Points
WARNING Test points referenced in the event code descriptions
are on the distribution panel.
Never turn on the lift truck with any control connectors Power Cable Connections
disconnected. In addition, never remove or connect
any control connectors while the lift truck is keyed on.

Statistically most malfunctions occur in or at hardware CAUTION

components, contactors, and motors. The next
components to test are connectors, wiring, and input Due to capacitance voltage present in the traction mo-
devices such as switches, potentiometers, or tor controller and lift motor controller, whenever per-
encoders. When measuring voltage and resistance of forming maintenance which may permit contact with
these components, use a Digital Volt-Ohm Meter the bus bars and associated power cables, discharge
(DVOM). Be sure to connect all components previously the capacitors.
disconnected after completing event code steps. The
• Move the lift truck to a secure non-traffic mainte-
last component to suspect is the motor control system.
nance area with a level floor.
In all instances, begin the troubleshooting procedure at
the driven device, proceed to inputs devices, then, and • Lockout or tagout the lift truck as described in lock-
only then, move on to the control to which these out/tagout in this section.
devices attach. • Disconnecting the battery discharges the capaci-
When a Malfunction Occurs tors. Once the dash display flashes, the capacitors
are discharged. Two alternative methods of dis-
• Go to Access 1 and access the Level 2: Field Ser-
charging these capacitors are to disconnect the
vice Mode as follows.
battery and hold the key switch in the start position
Note: The monitoring system can be accessed at three for 10 seconds or disconnect the battery and con-
levels of authorization: nect a 200 Ω, 2 W resistor between the positive and
Level 1: Operator Mode negative terminals on the controller.
Level 2: Field Service Mode (Full Lift Truck Operation)
• Turn key switch to off, remove key.
Level 3: Analyzer/Test Mode (No Lift Truck Operation)
This section deals with Level 2 and Level 3. For
information on Level 1, see the Operator’s Manual.
See Electrical for Access 1 information.

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Event Codes

Access 1 Display Control Module (DCM)

Fig. 1 (16722-02)
1 Display Screen
2 Battery Retainer Switch Indicator*
3 Enter or Return Key, used to navigate in and out of menus
and accept inputs.
4 Wire Guidance Display (optional)
5 Navigation Keys, up, down, left and right arrows; used to
scroll through menus.
6 Operator Improper Sequence Error Indicator*
7 Service Required Indicator*
8 Battery Discharge Indicator
* NOTE: These three indicators are viewable during initial
key-on, self test and indicator functioning.

Access 1 - Display Control Module (DCM)

Access 3™ - Traction Control Module (TCM)
Access 4 - Vehicle Control Module (VCM)
Access 5 - Steering Control Module (SCM)
Access 6 - Guidance Control Module (GCM)

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Event Code 101

Event Code 101 Step 5: Check for CAN line short to the battery nega-
tive, battery positive, and lift truck frame. Turn off the lift
Access 1 CAN Initialization Error. truck and disconnect battery. Using a DVOM, check the
All lift truck functions disabled. resistance at the power unit from CAN_L to battery
negative bus bar, CAN_L to TP3 on the power unit dis-
Note: Absence of battery negative to ACCESSES on tribution panel, and CAN_L to lift truck frame. Resis-
the CAN bus loads the bus and impede CAN
tance is greater than 10,000 Ω.
communications.
• If: Less than 10,000 Ω.
Step 1: Check the Access 1 CAN wiring. Wire 003
CA302-8 to CA105-2 and wire 004 CA302-9 to – Then repair or replace wiring as necessary.
CA105-8.
• If: Wiring is correct and event code continues.
– Then proceed to Step 2.
• If: Wiring incorrect.
– Then repair or replace as necessary.
Step 2: Check power to Access 1, wire 2941
CA302-3 to CA103-10 and wire 513 CA302-4 to
CA107-8.
• If: Wiring is correct and event code continues.
– Then proceed to Step 3.
• If: Wiring incorrect.
– Then repair or replace as necessary.
Step 3: Check for battery negative to other AC-
CESSES on CAN bus by verifying that power lamps
are on.
• If: ACCESS has no power.
– Then using a DVOM, check for battery positive
and battery negative. If either be missing, check
associated wiring, connector, and fuse.
Step 4: CAN communications line test:
Turn off the lift truck and use a DVOM to check the
resistance between CAN_H and CAN_L on the
platform distribution panel TP13 and TP14, is 60 Ω.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA402 from Access 5 and, using a
DVOM, check resistance between CA402-4 and
CA402-5.
• If: Greater than 120 Ω.
– Then replace Access 5.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA302 from Access 1 and, using a
DVOM, check resistance between CA302-8 and
CA302-9.
• If: Greater than 120 Ω.
– Then replace Access 1.

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Event Code 103

Event Code 103 – Then repair or replace wiring as necessary.

Access 3™ CAN Initialization Error.

All functions disabled.
Note: Access 1 CAN bus communication with
Access 3™ has not occurred within specified time.
Step 1: Turn on the lift truck, check the status of
Access 3™ power on lamps.
• If: Access 3™ power lamps are on and event code
continues.
– Then proceed to Step 2.
• If: Access 3™ power lamps are off.
– Then check for battery voltage between CA401-1
and battery negative cable.
• If: 24 V.
– Then replace Access 3™.
• If: 0 V.
– Then check wire 2953 CA401-1 to CA201-5, fuse
FU3 power unit distribution panel.
Step 2: Check CAN communications lines. Turn off
the lift truck and, using a DVOM, check resistance be-
tween CAN_H and CAN_L is 60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Check associated wiring, connections, and
fuses. Repair or replace as necessary.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA402 from Access 5 and, using a
DVOM, check resistance between CA402-4 and
CA402-5.
• If: Greater than 60 Ω.
– Then replace Access 5.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA302 from Access 1 and, using a
DVOM, check resistance between CA302-8 and
CA302-9.
• If: Greater than 60 Ω.
– Then replace Access 1.
Step 3: Check for CAN line short to battery negative,
battery positive, and lift truck frame. Turn off the lift
truck, disconnect battery and, using a DVOM, check
resistance at the power unit from CAN_L to battery
negative bus bar, CAN_L to TP3 on the power unit dis-
tribution panel and CAN_L to lift truck frame. Resis-
tance is greater than 10,000 Ω.
• If: Less than 10,000 Ω.

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Event Code Repair or replace104

Event Code Repair or re- negative bus bar, CAN_L to TP3 on the power unit dis-
tribution panel and CAN_L to the lift truck frame. Resis-
place104 tance is greater than 10,000 Ω.
• If: Less than 10,000 Ω.
Access 4 CAN Initialization Error.
– Then repair or replace wiring as necessary.
All lift truck functions disabled.
Note: Access 1 CAN bus communication with
Access 4 has not occurred within specified time.
Step 1: Turn on the lift truck, check status of
Access 4 power on lamps.
• If: Access 4 power lamps are on and event code
continues.
– Then proceed to Step 2.
• If: Access 4 power lamps are off.
– Then check for battery voltage between CA304-1
and CA304-3.
• If: 24 V.
– Then replace Access 4.
• If: 0 V.
– Then check wire 2937, CA304-1 to CA103-12;
wire 525, CA304-3 to CA107-9 and fuse FU2
power unit distribution panel. Repair or replace
as necessary.
Step 2: Check CAN Communications Lines. Turn off
the lift truck and, using a DVOM, check that the resis-
tance between CAN_H and CAN_L is 60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Check associated wiring, connections, and
fuses. Repair or replace as necessary.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA402 from Access 5 and, using a
DVOM, check resistance between CA402-4 and
CA402-5.
• If: Greater than 60 Ω.
– Then replace Access 5.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA302 from Access 1 and, using a
DVOM, check resistance between CA302-8 and
CA302-9.
• If: Greater than 60 Ω.
– Then replace Access 1.
Step 3: Check for CAN line short to battery negative,
battery positive, and lift truck frame. Turn off the lift
truck, disconnect battery and, using a DVOM, check
resistance at the power unit from CAN_L to battery

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Event Code 105

Event Code 105 • If: Less than 10,000 Ω.

– Then repair or replace wiring as necessary.
Access 5 CAN Initialization Error.
All lift truck functions disabled.
Note: Access 1 CAN bus communication with
Access 5 has not occurred within specified time.
Step 1: Turn on the lift truck, check the status of
Access 5 power on lamps.
• If: Access 5 power lamps are on and event code
continues.
– Then proceed to Step 2.
• If: Access 5 power lamps are off.
– Then check for battery voltage between
CA403-26 and CA403-10.
• If: 24 V.
– Then replace Access 5.
• If: 0 V.
– Then check wire 551 CA403-26 to CA401, wire
2966 CA403-10 to CA201-6, fuse FU3 power unit
distribution panel.
Step 2: Check CAN communications lines. Turn off
the lift truck and, using a DVOM, check that the resis-
tance between CAN_H and CAN_L is 60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Check associated wiring, connections, and
fuses. Repair or replace as necessary.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA402 from Access 5 and, using a
DVOM, check resistance between CA402-4 and
CA402-5.
• If: Greater than 60 Ω.
– Then replace Access 5.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA302 from Access 3™ and, using a
DVOM, check resistance between CA302-8 and
CA302-9.
• If: Greater than 60 Ω.
– Then replace Access 1.
Step 3: Check for CAN line short to battery negative,
battery positive, and the lift truck frame. Turn off the lift
truck, disconnect battery and, using a DVOM, check
resistance at the power unit from CAN_L to battery
negative bus bar, CAN_L to TP3 on the power unit dis-
tribution panel and CAN_L to the lift truck frame. Resis-
tance is greater than 10,000 Ω.

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Event Code 106

Event Code 106 • If: Less than 10,000 Ω.

– Then repair or replace wiring as necessary.
Access 6 CAN Initialization Error.
All lift truck functions disabled.
Note: Access 1 CAN bus communication with
Access 6 has not occurred within specified time.
Step 1: Turn on the lift truck, check status of
Access 6 power on lamps.
• If: Access 6 power lamps are on and event code
continues.
– Then proceed to Step 2.
• If: Access 6 power lamps are off.
– Then check for battery voltage between CA601-1
and CA601-2.
• If: 24 V.
– Then replace Access 6.
• If: 0 V.
– Then check wire 2972 CA601-1 to CA201-6, wire
552 CA601-2 to battery negative bus bar, fuse
FU3 power unit distribution panel.
Step 2: Check CAN communications lines. Turn off
the lift truck and, using a DVOM, check resistance be-
tween CAN_H and CAN_L is 60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Check associated wiring, connections, and
fuses.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA402 from Access 5 and, using a
DVOM, check resistance between CA402-4 and
CA402-5.
• If: Greater than 60 Ω.
– Then replace Access 5.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA302 from Access 1 and, using a
DVOM, check resistance between CA302-8 and
CA302-9.
• If: Greater than 60 Ω.
– Then replace Access 1.
Step 3: Check for CAN line short to battery negative,
battery positive, and the lift truck frame. Turn off the lift
truck, disconnect battery and, using a DVOM, check
resistance at the power unit from CAN_L to battery
negative bus bar, CAN_L to TP3 on the power unit dis-
tribution panel and CAN_L to the lift truck frame. Resis-
tance is greater than 10,000 Ω.

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Event Code 111

Event Code 111

Access 1 Software Parameter Error.
All lift truck functions disabled.
Step 1: Download latest software.

Event Code 113

Access 3™ Software Incompatible.
All functions disabled.
Step 1: Load Access 3™ with compatible software.

Event Code 114

Access 4 Software Incompatible.
All lift truck functions disabled.
Step 1: Load Access 4 with compatible software.

Event Code 115

Access 5 Software Incompatible.
All lift truck functions disabled.
Step 1: Load Access 5 with compatible software.

Event Code 116

Access 6 Software Incompatible.
All lift truck functions disabled.
Step 1: Load Access 6 with compatible software.

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Event Code 123

Event Code 123 – Then repair or replace wiring as necessary.

Access 3™ CAN Error.

All lift truck functions disabled.
Note: Access 1 CAN bus communication with
Access 3™ was lost.
Step 1: Turn on the lift truck, check status of
Access 3™ power on lamps.
• If: Access 3™ power lamps are on and event code
continues.
– Then proceed to Step 2.
• If: Access 3™ power lamps are off.
– Then check for battery voltage between CA401-1
and battery negative cable.
• If: 24 V.
– Then replace Access 3™.
• If: 0 V.
– Then check wire 2953 CA401-1 to CA201-5, fuse
FU3 power unit distribution panel.
Step 2: Check CAN communications lines. Turn off
the lift truck and, using a DVOM, check resistance be-
tween CAN_H and CAN_L is 60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Check associated wiring, connections, and
fuses.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA402 from Access 5 and, using a
DVOM, check resistance between CA402-4 and
CA402-5.
• If: Greater than 60 Ω.
– Then replace Access 5.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA302 from Access 1 and, using a
DVOM, check resistance between CA302-8 and
CA302-9.
• If: Greater than 60 Ω.
– Then replace Access 1.
Step 3: Check for CAN line short to battery negative,
battery positive, and the lift truck frame. Turn off the lift
truck, disconnect battery and, using a DVOM, check
resistance at the power unit from CAN_L to battery
negative bus bar, CAN_L to TP3 on the power unit dis-
tribution panel and CAN_L to the lift truck frame. Resis-
tance is greater than 10,000 Ω.
• If: Less than 10,000 Ω.

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Event Code 124

Event Code 124 • If: Less than 10,000 Ω.

– Then repair or replace wiring as necessary.
Access 4 CAN Error.
All lift truck functions disabled.
Note: Access 1 CAN bus communication with
Access 4 was lost.
Step 1: Turn on the lift truck, check status of
Access 4 power on lamps.
• If: Access 4 power lamps are on and event code
continues.
– Then proceed to Step 2.
• If: Access 4 power lamps are off.
– Then check for battery voltage between CA304-1
and CA304-3.
• If: 24 V.
– Then replace Access 4.
• If: 0 V.
– Then check wire 2937 CA304-1 to CA103-12,
wire 525 CA304-3 to CA107-9, fuse FU2 power
unit distribution panel.
Step 2: Check CAN communications lines. Turn off
the lift truck and, using a DVOM, check resistance be-
tween CAN_H and CAN_L is 60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Check associated wiring, connections, and
fuses.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA402 from Access 5 and, using a
DVOM, check resistance between CA402-4 and
CA402-5.
• If: Greater than 60 Ω.
– Then replace Access 5.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA302 from Access 1. Check resis-
tance between CA302-8 and CA302-9 using a
DVOM.
• If: Greater than 60 Ω.
– Then replace Access 1.
Step 3: Check for CAN line short to battery negative,
battery positive, and the lift truck frame. Turn off the lift
truck, disconnect battery and, using a DVOM, check
resistance at the power unit from CAN_L to battery
negative bus bar, CAN_L to TP3 on the power unit dis-
tribution panel and CAN_L to the lift truck frame. Resis-
tance is greater than 10,000 Ω.

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Event Code 125

Event Code 125 • If: Less than 10,000 Ω.

– Then repair or replace wiring as necessary.
Access 5 CAN Error.
All lift truck functions disabled.
Note: Access 1 CAN bus communication with
Access 5 was lost.
Step 1: Turn on the lift truck, check status of
Access 5 power on lamps.
• If: Access 5 power lamps are on and event code
continues.
– Then proceed to Step 2.
• If: Access 5 power lamps are off.
– Then check for battery voltage between
CA403-26 and CA403-10.
• If: 24 V.
– Then replace Access 5.
• If: 0 V.
– Then check wire 551 CA403-26 to CA401, wire
2966 CA403-10 to CA201-6, fuse FU3 power unit
distribution panel.
Step 2: Check CAN communications lines. Turn off
the lift truck and, using a DVOM, check resistance be-
tween CAN_H and CAN_L is 60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Check associated wiring, connections, and
fuses.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA402 from Access 5 and, using a
DVOM, check resistance between CA402-4 and
CA402-5.
• If: Greater than 60 Ω.
– Then replace Access 5.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA302 from Access 3™ and, using a
DVOM, check resistance between CA302-8 and
CA302-9.
• If: Greater than 60 Ω.
– Then replace Access 1.
Step 3: Check for CAN line short to battery negative,
battery positive, and the lift truck frame. Turn off the lift
truck, disconnect battery and, using a DVOM, check
resistance at the power unit from CAN_L to battery
negative bus bar, CAN_L to TP3 on the power unit dis-
tribution panel and CAN_L to the lift truck frame. Resis-
tance is greater than 10,000 Ω.

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Event Code 126

Event Code 126 tribution panel and CAN_L to the lift truck frame. Resis-
tance is greater than 10,000 Ω.
Access 6 CAN Error. • If: Less than 10,000 Ω.
All lift truck functions disabled. – Then repair or replace wiring as necessary.
Note: Access 1 CAN bus communication with
Access 6 was lost.
Step 1: Turn on the lift truck, check status of
Access 6 power on lamps.
• If: Access 6 power lamps are on and event code
continues.
– Then proceed to Step 2.
• If: Access 6 power lamps are off.
– Then check for battery voltage between CA601-1
and CA601-2.
• If: 24 V.
– Then replace Access 6.
• If: 0 V.
– Then check wire 2972 CA601-1 to CA201-6, wire
552 CA601-2 to battery negative BB, fuse FU3
power unit distribution panel. Repair or replace
as necessary.
Step 2: Check CAN communications lines. Turn off
the lift truck and, using a DVOM, check resistance be-
tween CAN_H and CAN_L is 60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Check associated wiring, connections, and
fuses.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA402 from Access 5 and, using a
DVOM, check resistance between CA402-4 and
CA402-5.
• If: Greater than 60 Ω.
– Then replace Access 5.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA302 from Access 1 and, using a
DVOM, check resistance between CA302-8 and
CA302-9.
• If: Greater than 60 Ω.
– Then replace Access 1.
Step 3: Check for CAN line short to battery negative,
battery positive, and the lift truck frame. Turn off the lift
truck, disconnect battery and, using a DVOM, check
resistance at the power unit from CAN_L to battery
negative bus bar, CAN_L to TP3 on the power unit dis-

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Event Code 131

Event Code 131

Access 1 Alarm 1 (ALM1) Driver Shorted.
No action taken.
Step 1: Using a DVOM check for 24 V between TP8
and TP7 on platform distribution panel. Energize output
for ALM1 in analyzer mode.
• If: 0 V.
– Then remove wire 5917 from CA302-2 and check
for 24 V between CA302-2 and TP7 on platform
distribution panel. Energize output for ALM1 in
analyzer mode.
• If: 0 V.
– Then replace Access 1.
• If: 24 V.
– Then check continuity of wire 5917.
• If: Open.
– Then repair or replace wiring.

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Event Code 133

Event Code 133

Guidance Steer Indicator (GSI) CAN Error.
No lift truck functions are disabled.
Step 1: Turn on the lift truck, check status of GSI.
• If: GSI power light is on.
– Then proceed to Step 2.
• If: GSI lights are off.
– Then check for 24 V between CA201-6 and
CA206-5.
• If: 0 V.
– Then check FU3.
• If: 24 V.
– Then check for 24 V between CA403-10 and
CA403-26.
• If: 24 V.
– Then replace GSI.
• If: 0 V.
– Then issue exists in wiring between CA403-10 or
CA403-26.
Step 2: Check connection of CAN to GSI.
• If: Correct and event code continues.
– Then turn off the lift truck and, using a DVOM,
check resistance between CAN_H and CAN_L
platform distribution panels CA105-4 and
CA105-10. Resistance is 60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L,
repair as necessary.
• If: Greater than 60–65 Ω with all connectors con-
nected.
– Then CAN bus-terminating resistor is missing or
damaged. CAN bus contains two terminating re-
sistors, one is located in the Access 5 the other in
Access 1.
Step 3: Check for CAN lines for short battery nega-
tive, battery positive, and the lift truck frame. Turn off
the lift truck, disconnect battery and, using a DVOM,
check resistance at power unit distribution panel be-
tween CAN_L/CAN_H and battery negative bus bar,
CAN_L/CAN_H between TP15 and TP16 and CAN_L/
CAN_H to the lift truck frame. Resistance is greater
than 10,000 Ω.
• If: Less than 10,000 Ω.
– Then repair or replace as necessary.

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Event Code 134

Event Code 134 CAN_L/CAN_H to the lift truck frame. Resistance is

greater than 10,000 Ω.
Access 4 CAN Error. • If: Less than 10,000 Ω.
Full speed traction and raise 2 disabled. – Then repair as necessary.
Step 1: Turn on the lift truck, check status of
Access 4 power on lamps.
• If: Access 4 power lamps are on.
– Then proceed to Step 2.
• If: Access 4 lamps are off.
– Then check for 24 V between CA103-12 and
CA107-9.
• If: 24 V.
– Then check for 24 V between CA304-1 and
CA304-3.
• If: 24 V.
– Then replace Access 4.
• If: 0 V.
– Then issue exists in wiring connected to CA304-1
to CA304-3.
Step 2: Check CAN communications lines. Turn off
the lift truck. Using a DVOM, check that the resistance
between CAN_H and CAN_L, platform distribution
panel TP13 and TP14 is 60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Check associated wiring, connections, and
fuses.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA402 from Access 5 and, using a
DVOM, check resistance between CA402-4 and
CA402-5.
• If: Greater than 120 Ω.
– Then replace Access 5.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA302 from Access 1 and, using a
DVOM, check resistance between CA302-8 and
CA302-9.
• If: Greater than 120 Ω.
– Then replace Access 1.
Step 3: Check for CAN lines for short battery nega-
tive, battery positive, and the lift truck frame. Turn off
the lift truck and disconnect battery. Using a DVOM,
check the resistance at the power unit distribution
panel between CAN_L/CAN_H and battery negative
bus bar, CAN_L/CAN_H between TP15 and TP16, and

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Event Code 160

Event Code 160 – Then repair or replace the wires or connect

CA428.
Access 1 Communication Error with EPS • If: The wires and connections are good.
Step 1: Turn off the lift truck. Check the resistance – Then continue to step 3.
between CA428-1 and CA428-2. Step 3: Turn on the lift truck. Make sure that the Fea-
• If: The resistance = 60 Ω. If CA428 is opened, the tures menus are set correctly.
lift truck side resistance is 60 Ω and the battery side
• If: The menu settings are not correct.
is O/L.
– Then change the menus to the correct settings.
– Then continue to step 2.
• If: The menu settings are correct.
• If: The resistance ≠ 60 Ω or O/L.
– Then continue to step 4.
– Then follow the instructions in the V-Force® bat-
tery manufacturer manual or Event Code 123. Step 4: Turn off the battery then turn on the battery.
Turn on the lift truck.
Step 2: Check the wires between CA428-1 and
CA428-2. Make sure that the wires are connected • If: The event code clears.
properly. – Then return the lift truck to service.
• If: The wires are damaged or not connected prop- • If: The event code does not clear.
erly. – Then troubleshoot the battery by following the in-
– Then repair or replace the wires or connect structions in the V-Force® battery manufacturer
CA428. manual.
• If: The wires and connections are good.
– Then continue to step 3. Event Code 162
Step 3: Turn off the battery then turn on the battery. Access 1 Communication Lost From EPS
Turn on the lift truck.
Step 1: Turn off the lift truck. Check the resistance
• If: The event code clears. between the CA428-1 and CA428-2.
– Then return the lift truck to service. • If: The resistance = 60 Ω. If CA428 is opened, the
• If: The event code does not clear. lift truck side resistance is 60 Ω and the battery side
– Then troubleshoot the battery by following the in- is O/L.
structions in the V-Force® battery manufacturer – Then continue to step 2.
manual. • If: The resistance ≠ 60 Ω or O/L.
– Then follow the instructions in the V-Force® bat-
Event Code 161 tery manufacturer manual or Event Code 123.
Access 1 Communication Lost From EPS Step 2: Check the wires between CA428-1 and
CA428-2. Make sure that the wires are connected
Step 1: Turn off the lift truck. Check the resistance
properly.
between CA428-1 and CA428-2.
• If: The wires are damaged or not connected prop-
• If: The resistance = 60 Ω. If CA428 is opened, the
erly.
lift truck side resistance is 60 Ω and the battery side
is O/L. – Then repair or replace the wires or connect
CA428.
– Then continue to step 2.
• If: The wires and connections are good.
• If: The resistance ≠ 60 Ω or O/L.
– Then continue to step 3.
– Then follow the instructions in the V-Force® bat-
tery manufacturer manual or Event Code 123. Step 3: Turn on the lift truck. Make sure that the Fea-
tures menus are set correctly.
Step 2: Check the wires between CA428-1 and
CA428-2. Make sure that the wires are connected • If: The menu settings are not correct.
properly. – Then change the menus to the correct settings.
• If: The wires are damaged or not connected prop- • If: The menu settings are correct.
erly. – Then continue to step 4.

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Event Code 163

Step 4: Turn off the battery then turn on the battery.

Turn on the lift truck.
Event Code 164
• If: The event code clears. EPS Software is Incompatible
– Then return the lift truck to service. The lift truck software is not compatible with the
• If: The event code does not clear. V-Force® lithium-ion battery software.
Step 1: Download the latest software into the lift truck
– Then troubleshoot the battery by following the in-
and correctly set up the Features Menu.
structions in the V-Force® battery manufacturer
manual. • If: The event code is cleared.
– Then return the lift truck to service.
Event Code 163 • If: The event code is not cleared.
– Then continue to step 3.
Access 1 Communication Error with EPS
Step 2: Download the latest software into the
Step 1: Turn off the lift truck. Check the resistance
V-Force® lithium-ion battery.
between the CA428-1 and CA428-2.
• If: The event code is cleared.
• If: The resistance = 60 Ω. If CA428 is opened, the
lift truck side resistance is 60 Ω and the battery side – Then return the lift truck to service.
is O/L. • If: The event code is not cleared.
– Then continue to step 2. – Then contact the Crown Service Department.
• If: The resistance ≠ 60 Ω or O/L.
– Then follow the instructions in the V-Force® bat- Event Code 165
tery manufacturer manual or Event Code 123.
Access 1 Communication Error with EPS
Step 2: Check the wires between CA428-1 and
Step 1: Turn off the lift truck. Check the resistance
CA428-2. Make sure that the wires are connected
between CA428-1 and CA428-2.
properly.
• If: The resistance = 60 Ω. If CA428 is opened, the
• If: The wires are damaged or not connected prop-
lift truck side resistance is 60 Ω and the battery side
erly.
is O/L.
– Then repair or replace the wires or connect
– Then continue to step 2.
CA428.
• If: The resistance ≠ 60 Ω or O/L.
• If: The wires and connections are good.
– Then follow the instructions in the V-Force® bat-
– Then continue to step 3.
tery manufacturer manual or Event Code 123.
Step 3: Turn on the lift truck. Make sure that the Fea-
Step 2: Check the wires between CA428-1 and
tures menus are set correctly.
CA428-2. Make sure that the wires are connected
• If: The menu settings are not correct. properly.
– Then change the menus to the correct settings. • If: The wires are damaged or not connected prop-
• If: The menu settings are correct. erly.
– Then continue to step 4. – Then repair or replace the wires or connect
Step 4: Turn off the battery then turn on the battery. CA428.
Turn on the lift truck. • If: The wires and connections are good.
• If: The event code clears. – Then continue to step 3.
– Then return the lift truck to service. Step 3: Turn off the battery then turn on the battery.
• If: The event code does not clear. Turn on the lift truck.
– Then troubleshoot the battery by following the in- • If: The event code clears.
structions in the V-Force® battery manufacturer – Then return the lift truck to service.
manual. • If: The event code does not clear.
– Then troubleshoot the battery by following the in-
structions in the V-Force® battery manufacturer
manual.

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Event Code 166

Event Code 166 – Then charge the battery.

Step 4: Confirm that the battery and the EPS harness
Load Shed Zero are properly connected.
The EPS has requested immobilization of the lift truck. • If: The battery and harness are properly connected.
Step 1: Check to see if the charger is plugged into – Then continue to step 5.
the battery.
• If: The battery and harness are not properly con-
• If: The charger is plugged into the battery. nected.
– Then unplug the charger from the battery. Turn – Then connect the battery and the EPS harness to
the key off then back on to operate the lift truck or the lift truck and continue to step 5.
plug the charger back in to continue charging.
Step 5: Measure the voltage on CA428. Measure the
• If: The charger is not plugged into the battery. voltage between CA428-4 (+) and the battery connec-
– Then the battery has a software issue. Check and tor (-).
update the battery protocol level and Consult the • If: The voltage is 34–39 V or 46–51 V.
Crown Customer Service.
– Then continue to step 6.
• If: The voltage is not 34–39 V or 46–51 V.
Event Code 167 – Then troubleshoot the battery by following the in-
EPS Error State Logged structions in the V-Force® battery manufacturer
manual.
Note: Troubleshoot the battery by following the instruc-
tions in the V-Force® battery manufacturer manual. Step 6: Measure the voltage on CA428. Measure the
voltage between CA428-5 (+) and the battery connec-
tor (-).
Event Code 168
• If: The voltage is 34–39 V or 46–51 V.
EWS Event – Then continue to step 7.
The lift truck does not have power. • If: The voltage is not 34–39 V or 46–51 V.
Step 1: View the external display unit on the – Then replace FU25 in the EPS harness.
V-Force® lithium-ion battery.
Step 7: Disconnect the battery connector from the lift
• If: The V-Force® lithium-ion battery is on. truck. Measure the voltage on the (+) and (-) terminals
– Then continue to step 2. of the battery connector.
• If: The V-Force® lithium-ion battery is not on. • If: The voltage is 34–39 V or 46–51 V.
– Then turn on the lithium-ion battery. If the lithium- – Then continue to step 8.
ion battery turns on, continue to step 2. If the lith- • If: The voltage is not 34–39 V or 46–51 V.
ium-ion battery does not turn on, then trouble-
– Then troubleshoot the battery by following the in-
shoot the battery by following the instructions in
structions in the V-Force® battery manufacturer
the V-Force® battery manufacturer manual.
manual.
Step 2: View the fault indicator LED on the V-Force®
Step 8: Connect the battery connector to the lift truck.
lithium-ion battery.
Turn on the lift truck.
• If: The fault indicator LED is flashing.
• If: The lift truck has power.
– Then troubleshoot the battery by following the in-
– Then continue to step 9.
structions in the V-Force® battery manufacturer
manual. • If: The lift truck does not have power.
• If: The fault indicator LED is not flashing. – Then see the schematic diagram to troubleshoot
the FU4, KYS, and K1 relay startup circuit.
– Then continue to step 3.
Step 9: Check the event code history, is event code
Step 3: View the battery state of charge LEDs on the 168 logged?
V-Force® lithium-ion battery.
• If: Event Code 168 is logged.
• If: The battery state of charge is greater than 0%.
– Then continue to step 10.
– Then continue to step 4.
• If: Event Code 168 is not logged.
• If: The battery state of charge is 0%.

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Event Code 169

– Then return the lift truck to service. is cleared, return the lift truck to service. If the
Step 10: Measure the voltage on the relay connector. event code is not cleared, continue to step 2.
Measure the voltage between K20-4 (+) and the bat- Step 2: Download the latest software into the lift truck
tery connector (-). and correctly set up the Features Menu.
• If: The voltage is 34–39 V or 46–51 V. • If: The event code is cleared.
– Then continue to step 11. – Then return the lift truck to service.
• If: The voltage is not 34–39 V or 46–51 V. • If: The event code is not cleared.
– Then repair or replace the wiring between FU25 – Then continue to step 3.
and K20-4. Step 3: Download the latest software into the
Step 11: Measure the voltage on the relay connector. V-Force® lithium-ion battery.
Measure the voltage between K20-4 (+) and K20-B (-). • If: The event code is cleared.
• If: The voltage is 34–39 V or 46–51 V. – Then return the lift truck to service.
– Then continue to step 12. • If: The event code is not cleared.
• If: The voltage is not 34–39 V or 46–51 V. – Then contact the Crown Service Department.
– Then repair or replace the wiring between K20-B
and PC203-8.
Step 12: Measure the voltage on the relay connector.
Measure the voltage between K20-4 (+) and K20-7 (-).
• If: The voltage is 34–39 V or 46–51 V.
– Then continue to step 13.
• If: The voltage is not 34–39 V or 46–51 V.
– Then replace K20.
Step 13: Measure the voltage on the relay connector.
Measure the voltage between K20-4 (+) and CA411-20
(-) on Access 3™.
• If: The voltage is 34–39 V or 46–51 V.
– Then replace Access 3™.
• If: The voltage is not 34–39 V or 46–51 V.
– Then repair or replace the wiring between
CA411-20 and K20-7.

Event Code 169

EPS/BRES Configuration Mismatch
The lift truck Features are not configured correctly for
the EPS type and the level installed in the lift truck. The
lift truck software is not compatible with the V-Force®
lithium-ion battery software.
Step 1: Use the Features > F15 Electrical Power
Source > F15.1 Type and F15.2 Level menus to config-
ure the EPS type and level.
• If: The Features are configured correctly.
– Then continue to step 2.
• If: The Features are not configured correctly.
– Then configure the EPS type and level to match
the EPS installed in the lift truck. Turn off the lift
truck then turn on the lift truck. If the event code

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Event Code 301

Event Code 301

Access 1 CAN Error.
Traction and raise disabled.
Step 1: Check CAN wires and connections.
Wire 018 CA401-15 Access 3™ to power unit
distribution panel CA204-7, RED wire CA203-3 to
platform distribution panel CA104-3, wire 004 CA105-8
to Access 1 CA302-9.
Wire 017 CA401-23 Access 3™ to power unit
distribution panel CA204-1, WHITE wire CA203-2 to
platform distribution panel CA104-2, wire 003 CA105-2
to Access 1 CA302-8.
• If: Wiring or connections require repair.
– Then repair as necessary.
Step 2: Check CAN communications lines. Turn off
the lift truck and, using a DVOM, check resistance be-
tween CAN_H and CAN_L, platform distribution panel
TP13 and TP14, is 60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Check associated wiring, connections, and
fuses.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA402 from Access 5 and, using a
DVOM, check resistance between CA402-4 and
CA402-5.
• If: Greater than 120 Ω.
– Then replace Access 5.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA302 from Access 1 and, using a
DVOM, check resistance between CA302-8 and
CA302-9.
• If: Greater than 120 Ω. Event Code 302
– Then replace Access 1.
THRU

Event Code 303

Access 3™ Internal Short.
Traction disabled.
Step 1: Turn off the lift truck. Then turn on the lift
truck.
• If: Event code continues.
– Then replace Access 3™.

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Event Code 304

Event Code 304

Access 3™ / Access 4 CAN Error.
Traction and raise disabled.
Step 1: Check CAN wires and connections.
Wire 018 CA401-15 Access 3™ to power unit
distribution panel CA204-7, wire 002 CA105-7 to
Access 4 CA303-8.
Wire 017 CA401-23 Access 3™ to power unit
distribution panel CA204-1, wire 001 CA105-1
Access 4 CA303-7.
• If: Wiring or connections require repair.
– Then repair as necessary.
Step 2: Check CAN communications lines. Turn off
the lift truck and, using a DVOM, check resistance be-
tween CAN_H and CAN_L, platform distribution panel
TP13 and TP14, is 60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Check associated wiring, connections, and
fuses.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA402 from Access 5 and, using a
DVOM, check resistance between CA402-4 and
CA402-5.
• If: Greater than 120 Ω.
– Then replace Access 5.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA302 from Access 1 and, using a
DVOM, check resistance between CA302-8 and
CA302-9.
• If: Greater than 120 Ω.
– Then replace Access 1.

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Event Code 305

Event Code 305

Access 3™ / Access 5 CAN Error.
Traction and raise disabled.
Step 1: Check CAN wires and connections.
Wire 018 CA401-15 Access 3™ to power unit
distribution panel CA204-7, wire 020 CA204-8 to
Access 5 CA402-5.
Wire 017 CA401-23 Access 3™ to power unit
distribution panel CA204-1, wire 019 CA204-2
Access 5 CA402-4.
• If: Wiring or connections require repair.
– Then repair as necessary.
Step 2: Check CAN communications lines. Turn off
the lift truck and, using a DVOM, check resistance be-
tween CAN_H and CAN_L, platform distribution panel
TP13 and TP14, is 60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Check associated wiring, connections, and
fuses.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA402 from Access 5 and, using a
DVOM, check resistance between CA402-4 and
CA402-5.
• If: Greater than 120 Ω.
– Then replace Access 5.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA302 from Access 1 and, using a
DVOM, check resistance between CA302-8 and
CA302-9.
• If: Greater than 120 Ω.
– Then replace Access 1.

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Event Code 306

Event Code 306

Access 3™ / Access 6 CAN Error.
Traction and raise disabled.
Step 1: Check CAN wires and connections.
Wire 018 CA401-15 Access 3™ to power unit
distribution panel CA204-7, wire 021 CA204-3 to
Access 6 CA601-4.
Wire 017 CA401-23 Access 3™ to power unit
distribution panel CA204-1, wire 001 CA204-9
Access 6 CA601-5.
• If: Wiring or connections require repair.
– Then repair as necessary.
Step 2: Check CAN communications lines. Turn off
the lift truck and, using a DVOM, check resistance be-
tween CAN_H and CAN_L, platform distribution panel
TP13 and TP14, is 60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Check associated wiring, connections, and
fuses.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA402 from Access 5 and, using a
DVOM, check resistance between CA402-4 and
CA402-5.
• If: Greater than 120 Ω.
– Then replace Access 5.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are open.
Remove CA302 from Access 1 and, using a
DVOM, check resistance between CA302-8 and
CA302-9.
• If: Greater than 120 Ω.
– Then replace Access 1.

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Event Code 307

Event Code 307 Event Code 312

THRU Access 3™ Short Between Terminal U and V.
Traction disabled.
Event Code 309 Step 1: Check condition of motor cables.
Access 3™ Short. • If: Cables are shorted.
Traction disabled. – Then repair as necessary.
Event Code 307: Short Between battery negative and • If: Cables correct.
Terminal V. – Then disconnect traction motor (M1) phase ca-
Event Code 308: Short Between battery positive and bling from Access 3™ and turn on the lift truck.
Terminal W. • If: Event code continues.
Event Code 309: Short between battery negative and – Then replace Access 3™.
Terminal W.
Step 1: Check condition of motor cables.
• If: Cables are shorted.
– Then repair as necessary.
• If: Cables are correct.
– Then disconnect traction motor (M1) phase ca-
bling from Access 3™ and Turn on the lift truck.
• If: Event code continues.
– Then replace Access 3™.

Event Code 310

Height Encoder (ECR4) and Height Feedback En-
coder (ECR6) Software Incompatibility
Step 1: Load the compatible software for ECR4 and
ECR6.
• If: Event code 310 continues.
– Then replace Access 3™.

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Event Code 313

Event Code 313

THRU

Event Code 315

Access 3™ Short Between Terminal W and V.
Traction disabled.
Step 1: Check condition of motor cables.
• If: Cables are shorted.
– Then repair as necessary.
• If: Cables correct.
– Then disconnect traction motor (M1) phase ca-
bling from Access 3™ and turn on the lift truck.
• If: Event code continues.
– Then replace Access 3™.
Event Code 319
THRU

Event Code 320

Access 3™ Internal Issue.
All functions disabled.
Step 1: Turn off the lift truck. Then turn on the lift
truck.
• If: Event code continues.
– Then replace Access 3™.

Event Code 316

THRU

Event Code 318

Access 3™ Short Between Terminal W and U.
Traction disabled.
Step 1: Check condition of motor cables.
• If: Cables are shorted.
– Then repair as necessary.
• If: Cables correct.
– Then disconnect traction motor (M1) phase ca-
bling from Access 3™ and turn on the lift truck.
• If: Event code continues.
– Then replace Access 3™.

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Event Code 322

Event Code 322 Event Code 324

Access 3™ Battery Voltage Low. Access 3™ Internal temperature Less than -25°C
Full traction disabled. (-13°F).
Note: If event code 322 is logged with event code 541, Full traction disabled.
then see the ED system event code 541 first. Step 1: Determine air temperature of environment.
Traction disabled. • If: Ambient temperature is below -25°C (-13°F) and
Step 1: Using a DVOM check, for 24 V between the lift truck has set idle for and extended time.
Access 3™ (+) terminal and battery negative terminal. – Then Access 3™ heat sink must be warmed to
• If: Voltage is under 24 V. operate with full traction capabilities.
– Then check for correct battery, power cable con- • If: Ambient temperature is well above -25°C (-13°F)
nections, fuse FU15, and ED2 contactor. and event continues.
• If: Battery, power cable connections, FU15 and – Then replace Access 3™.
ED2 are correct.
– Then check battery charge level. Event Code 325
• If: Battery is properly charged. Access 3™ Internal Temperature Less than -40°C
– Then check feature menu for proper battery con- (-40°F).
figuration. Traction disabled.
• If: Battery is not configured correctly. Step 1: Determine air temperature of environment.
– Then correct configuration. • If: Ambient temperature is below -40°C (-40°F) and
the lift truck has set idle for and extended time.
– Then Access 3™ heat sink must be warmed to
Access 3™ operate.
• If: Ambient temperature is well above -40°C (-40°F)
and event continues.
B+ + B–
– Then replace Access 3™.

Event Code 326

FU15 Access 3™ Internal Temperature More than 85°C
ED2
(185°F).
No effect.
Event Code 323 Step 1: Check mounting of Access 3™.
• If: Installation screws are loose.
Access 3™ Battery Voltage High.
– Then tighten the installation screws.
Note: If event code 323 is logged with event code 541,
then see the ED system event code 541 first. • If: Motor M1 is hot.
Traction disabled. – Then check power cable connections and blow
off any dirt build-up.
Step 1: Using a DVOM check for 24 V Access 3™
battery positive terminal and battery negative terminal.
• If: Voltage is over 24 V (for example, 36 V).
– Then check for correct battery.
• If: Battery is 24 V.
– Then check feature menu for proper battery con-
figuration.
• If: Battery is not configured correctly.
– Then correct configuration.

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Event Code 327

Event Code 327

Access 3™ Internal Temperature in Excess of
105°C (221°F).
Traction disabled.
Step 1: Check mounting of Access 3™.
• If: Installation screws are loose.
– Then tighten the installation screws.
• If: Motor M1 is hot.
– Then check power cable connections and blow
off any dirt build-up.

Event Code 328

Access 3™ Traction Motor (M1) Temperature Sen-
sor (TS1) Above Acceptable Operating Range of
165°C (329°F).
No effect.
Step 1: Check traction motor setups.
• If: Incorrect setups.
– Then change.
• If: Setups are correct.
– Then check TS1/M1 lead or cable connections
and clean dirt off M1.
• If: This action does not correct overheating.
– Then check battery condition.
Note: Extreme duty cycle or high ambient
temperatures could also cause 328 event code
logging.

Event Code 329

Access 3™ Traction Motor M1 Temperature Sensor
TS1 Signal Out of Range.
Traction disabled.
Step 1: Using a DVOM check TS1 wiring for a short
to the lift truck frame. Check CA411-1 and CA411-2 en-
coder wires, CA411-1 wire 579 to battery negative BB
and CA411-2 wire 105 to CA401-16 to the lift truck
frame.
• If: Wires are shorted.
– Then repair as necessary.
• If: Wires are correct.
– Then using a DVOM check TS1 wiring for an
open. Check CA411-1 and CA411-2 encoder
wires, CA411-1 wire 579 to battery negative BB
and CA411-2 wire 105 to CA401-16.

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Event Code 330

Event Code 330

Access 3™ Encoder ECR3 Count Error.
Traction disabled. One or both channels lost at
Access 3™ while the lift truck is traveling.
Step 1: Check for event codes 366, 367, 376 and
377, which indicate that ECR3 power supply or logic
ground is out of range. If these codes have been
logged, resolve them before proceeding with proce-
dure below.
• If: None of these event codes have occurred.
– Then proceed to Step 2.
Note: Use Service Mode 2 to view ECR3 operation.
Step 2: Turn off the lift truck. Then turn on the lift
truck.
• If: Event code 330 logs.
– Then check ECR3 channel A and B wiring.
WHITE and BLUE wires between ECR3 and
CA411-4, -5. Wires 028, 029 between CA411-4,
-5 and Access 3™ CA401-6, -5.
• If: Wiring is correct and event code continues.
– Then replace Access 3™.
• If: No event codes slow traction or shut downs con-
tinue.
– Then check ECR3 power wiring. RED and
BLACK wires between ECR3 and CA411-3, -6.
Wires 315 and 549 between CA411-3, -6 and
Access 3™ CA401-3 and -4.
• If: Connections are good and slow traction or shut
downs continue.
– Then replace M1.

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Event Code 332

Event Code 332 – Then check for correct battery, power cable con-
nections, fuse FU10, and ED2 contactor.
Access 3™ Drive Motor (M1) Rotation More than • If: Battery, power cable connections, FU10 and
4000 rpm. ED2 correct.
Traction disabled. – Then check battery charge level.
Step 1: Check ECR3 channel A and B wiring. WHITE • If: Battery is properly charged.
and BLUE wires between ECR3 and CA411-4 and -5.
– Then check feature menu for proper battery con-
Wires 028 and 029 between CA411-4, -5 and
figuration.
Access 3™ CA401-6, -5.
• If: Battery is not configured correctly.
• If: ECR3 channel A and B wiring is correct.
– Then correct configuration.
– Then check ECR3 power wiring. RED and
BLACK wires between ECR3 and CA411-3, -6.
Wires 315, 549 between CA411-3, -6 and
Access 3™ CA401-3, -4.
• If: ECR3 power wiring is correct.
– Then replace ECR3.

Event Code 336

Access 3™ Battery Voltage Over Range.
Full traction disabled.
Note: IF event code 336 is logged with event code 541,
then see the ED system event code 541 first.
Step 1: Using a DVOM check for 24 V on Access 3™
between battery positive terminal and battery negative
terminal.
• If: Over 24 V (for example, 36 V).
– Then check for correct battery.
• If: Battery is 24 V.
– Then check feature menu for proper battery con-
Event Code 334 figuration.
Access 3™ Battery Voltage Under Range. • If: Battery is not configured correctly.
Full traction disabled. – Then correct configuration.
Note: If event code 334 is logged with event code 541,
then see the ED system event code 541 first.
Step 1: Using a DVOM check for 24 V on Access 3™
between battery positive terminal and battery negative
terminal.
• If: Under 24 V.

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Event Code 337

Event Code 337

Access 3™ 24 V Battery Voltage Fluctuating.
Full traction disabled.
Note: Battery voltage is dropping excessively under
load.
Step 1: Check Access 3™ battery negative and bat-
tery positive power cable connections.
• If: Connections in poor condition.
– Then repair or replace.
• If: Connections in good condition.
– Then check condition of battery or install a known
good battery and monitor event code 337.

Event Code 338

Access 3™ battery positive Under Voltage.
All functions disabled.
Step 1: Check battery status.
• If: Battery has correct voltage and charged.
– Then proceed to Step 2.
• If: Battery does not have correct voltage or not
properly charged.
– Then resolve battery issue.
Step 2: Turn on the lift truck and, using a DVOM,
check for 24 V between CA401-1 and battery negative
on Access 3™.
• If: 24 V.
– Then proceed with Step 3.
• If: Voltage is above 0 V but much less than 24 V.
– Then check voltage between CA201-5 and
Access 3™ battery negative.
• If: 24 V.
– Then check wiring. Wire 2953 power unit distribu-
tion panel CA201 5 to Access 3™ CA401-1.
• If: Voltage is above 0 V but much less than 24 V.
– Then check condition of power unit distribution
panel.
Step 3: Check voltage between Access 3™ battery
positive and battery negative terminals.
• If: Voltage is below 24 V.
– Then check power cable condition and connec-
tion.

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Event Code 339

Event Code 339

Access 3™ battery positive Over Voltage.
Steering, traction, and hydraulics disabled.
Step 1: Check feature menu for proper battery con-
figuration.
• If: Configuration is correct.
– Then check for proper battery.
• If: Battery is correct.
– Then proceed to Step 2.
• If: Battery is not correct.
– Then resolve battery issue.
Step 2: Using a DVOM check for 24 V between
CA401-1 and Access 3™ battery negative.
• If: 24 V.
– Then proceed to Step 3.
• If: Voltage is above 0 V but much less than 24 V.
– Then check voltage between CA201-5 and
Access 3™ battery negative.
• If: 24 V.
– Then check wiring. Wire 2953 power unit distribu-
tion panel CA201-5 to Access 3™ CA401-1.
• If: Voltage is above 0 V but much less than 24 V. Event Code 340
– Then check condition of power unit distribution
panel. Access 3™ ED2 Contactor Coil Driver Overcurrent.
Step 3: Check voltage between Access 3™ battery Steering, traction, and hydraulics disabled.
positive and battery negative terminals. Step 1: Follow troubleshooting steps for event code
• If: Voltage is above 24 V but less than 28 V and 541.
event code continues.
– Then replace Access 3™.

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Event Code 341

Event Code 341 Step 1: Disconnect wires 2962 and 5924 from P2
contactor coil and, using a DVOM, check resistance of
Access 3™ P1 Contactor Coil Driver Overcurrent. P2 contactor coil.
Raise disabled. • If: Less than 20 Ω.
Step 1: Disconnect wires 2961 and 5923 from P1 – Then replace P2 contactor coil.
contactor coil and, using a DVOM, check resistance of • If: 20 Ω and event code continues.
P1 contactor coil.
– Then check P2 contactor coil wiring for a short.
• If: Less than 20 Ω. Wire 5924 to Access 3™ CA401-21 and wire
– Then replace P1 contactor. 2962 to power unit distribution panel CA202-7.
• If: 20 Ω and event code continues. • If: Wires are not shorted remove wire 5923 from P1
– Then check P1 contactor coil wiring for a short. contactor coil.
Wire 5923 to Access 3™ CA401-18 and wire – Then check for 24 V between wire 2962 and
2961 to power unit distribution panel CA202-6. 5924 at P2 contactor coil while depressing raise
• If: Wires are not shorted remove wire 5924 from P2 2 switch.
contactor coil. • If: 0 V.
– Then check for 24 V between wire 2961 and – Then replace Access 3™.
5923 at P1 contactor coil while depressing raise
1 switch.
• If: 0 V.
– Then replace Access 3™.

Event Code 342

Access 3™ P2 Contactor Coil Driver Overcurrent.
Raise speed 2 disabled.

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Event Code 343

Event Code 343

Access 3™ Lowering Solenoid (SVL) Driver Over-
current.
Raise and lower disabled.
Step 1: Disconnect wire 5925 from SVL coil and, us-
ing a DVOM, check resistance of SVL coil.
• If: Less than 29 Ω.
– Then replace SVL coil.
• If: 29 Ω.
– Then check for 24 V between wire 5925 and wire
2959 (opposite side of SVL coil) while depressing
lower switch.
• If: 0 V.
– Then remove wire 5925 from connector
CA401-22 and, using a DVOM, check for 24 V
between wire 2959 and CA401-22 while depress-
ing lower switch.
• If: 0 V.
– Then replace Access 3™.
• If: 24 V.
– Then turn off the lift truck reconnect wire 5925 to
SVL. Connect DVOM lead to wire 2959 and TP3
on the power unit distribution panel. Turn on the
lift truck, depress lower switch and check for
24 V.
• If: 0 V.
– Then check wiring at CA201-10 and FU3.

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Event Code 344

Event Code 344 Event Code 345

Access 3™ Fan2 Driver Overcurrent. Access 3™ ED2 Contactor Driver Open.
Full traction disabled. Steering and traction disabled.
Step 1: Disconnect wires 29122 and 5908 from Fan2 Step 1: Follow troubleshooting procedure for event
and, using a DVOM, check for 24 V between wire code 541.
29122 and wire 5908. Energize output for Fan2 in ana-
lyzer mode.
• If: 0 V.
– Then remove wire 5908 from CA401-8 and check
for 24 V between CA401-8 and TP4 on power
unit distribution panel. Energize output for Fan2
in analyzer mode.
• If: 0 V.
– Then replace Access 3™.
• If: 24 V.
– Then reconnect wire 5908 and check for 24 V be-
tween wire 29122 and TP3 on power unit distribu-
tion panel.
• If: 0 V.
– Then check connection of wire 29122 to
CA201-8.

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Event Code 346

Event Code 346

Access 3™ P1 Contactor Driver Open.
Raise 1 disabled.
Step 1: Disconnect wires 2961 and 5923 from P1
contactor coil and, using a DVOM, check resistance of
P1 contactor coil.
• If: Less than 20 Ω.
– Then replace P1 contactor coil.
• If: 20 Ω, remove wire 5924 from P2 contactor coil.
– Then check for 24 V between wires 2961 and
5923 at P1 contactor coil while depressing raise
one switch.
• If: 0 V.
– Then remove wire 5923 from CA401-18 and
check for 24 V between CA401-18 and TP4 while
depressing raise one switch.
• If: 0 V.
– Then replace Access 3™.
• If: 24 V.
– Then, using a DVOM, check for 24 V between
wire 2961 and TP3 while depressing raise one
switch.
• If: 0 V.
– Then check raise one switch and associated wir-
ing.

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Event Code 348

Event Code 348 Step 1: Using a DVOM check for 24 V between wire
29122 and 5908 at FAN2 (use analyzer mode to ener-
Access 3™ Lowering Solenoid (SVL) Driver Open. gize output).
Raise disabled. • If: 0 V.
Step 1: Disconnect wires 2959 and 5925 from SVL – Then remove wire 5908 from CA401-8 and check
coil and, using a DVOM, check resistance of SVL coil. for 24 V between CA401-8 to TP4 (use analyzer
• If: Less than 29 Ω. mode to energize output).
– Then replace SVL coil. • If: 0 V.
• If: 29 Ω. – Then replace Access 3™.
– Then check for 24 V between wires 2959 and • If: 24 V.
5925 while depressing lower switch. – Then check for 24 V between wire 29122 and
• If: 0 V. TP4.
– Then disconnect wire 5925 from CA401-22 and • If: 0 V.
check for 24 V between CA401-22 and TP4 while – Then check wiring.
depressing lower switch.
• If: 0 V.
– Then replace Access 3™.
• If: 24 V.
– Then check for 24 V between wire 2959 and TP3
while depressing lower switch.
• If: 0 V.
– Then check lower switch and associated wiring.

Event Code 350

Access 3™ ED2 Contactor Driver Shorted.
Full traction disabled.
Step 1: See the ED2 troubleshooting procedure for
event code 541.
Event Code 349
Access 3™ FAN2 Driver Open.
Full traction disabled.

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Event Code 351

Event Code 351

Access 3™ P1 Contactor Driver Shorted.
Full traction, auxiliary raise, and raise2 disabled.
Step 1: Disconnect wires 2961 and 5923 from P1
contactor coil and, using a DVOM, check resistance of
P1 contactor coil.
• If: Less than 20 Ω.
– Then replace P1 contactor coil.
• If: 20 Ω, remove wire 5924 from P2 contactor coil.
– Then check for 24 V between wire 2961 and
5923 at P1 contactor coil while depressing raise
one switch.
• If: 0 V.
– Then remove wire 5923 from CA401-18 and
check for 24 V between CA401-18 to TP4 while
depressing raise one switch.
• If: 0 V.
– Then replace Access 3™.
• If: 24 V.
– Then, using a DVOM, check for 24 V between
wire 2961 and TP3 while depressing raise one
switch.
• If: 0 V.
– Then check associated wiring.

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Event Code 352

Event Code 352

Access 3™ P2 Contactor Driver Shorted.
Full traction, auxiliary raise, and raise2 disabled.
Step 1: Disconnect wires 2962 and 5924 from P2
contactor coil and, using a DVOM, check resistance of
P2 contactor coil.
• If: Less than 20 Ω.
– Then replace P2 contactor.
• If: 20 Ω, remove wire 5923 from P1 contactor coil.
– Then check for 24 V between wire 2962 and
5924 at P2 contactor coil while depressing raise
two switch.
• If: 0 V.
– Then remove wire 5924 from CA401-21 and
check for 24 V between CA401-21 to TP4 while
depressing raise two switch.
• If: 0 V.
– Then replace Access 3™.
• If: 24 V.
– Then, using a DVOM, check for 24 V between
wire 2962 and TP3 while depressing raise two
switch.
• If: 0 V.
– Then check associated wiring.

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Event Code 353

Event Code 353

Access 3™ Lowering Solenoid (SVL) Driver
Shorted.
Raise disabled.
Step 1: Disconnect wires 2959 and 5925 from SVL
coil and, using a DVOM, check resistance of SVL coil.
• If: Less than 29 Ω.
– Then replace SVL coil.
• If: 29 Ω.
– Then check for 24 V between wires 2959 and
5925 while depressing lower switch.
• If: 0 V.
– Then disconnect wire 5925 from CA401-22 and
check for 24 V between CA401-22 and TP4 while
depressing lower switch.
• If: 0 V.
– Then replace Access 3™.
• If: 24 V.
– Then check for 24 V between wire 2959 and TP3
while depressing lower switch.
• If: 0 V.
– Then check wiring at CA201-10 and FU3.

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Event Code 354

Event Code 354

Access 3™ FAN2 Driver Shorted.
No action taken.
Step 1: Disconnect wires 29122 and 5908 from FAN2
and, using a DVOM, check for 24 V between wire
29122 and wire 5908. Energize output for FAN2 in an-
alyzer mode.
• If: 0 V.
– Then remove wire 5908 from CA401-8 and check
for 24 V between CA401-8 and TP4 on power
unit distribution panel. Energize output for Fan2
in analyzer mode.
• If: 0 V.
– Then replace Access 3™.
• If: 24 V.
– Then reconnect wire 5908 and check for 24 V be-
tween wire 29122 and TP3 on power unit distribu-
tion panel.
• If: 0 V.
– Then check wiring connection at CA201-8 and
FU4.

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Event Code 355

Event Code 355 – Then replace as necessary.

• If: Contacts correct.
Access 3™ PWM Driver Over Voltage. – Then turn off the lift truck and check ED2 load
All functions disabled. bus connections.
Step 1: Using a DVOM for 24 V between CA201-5 • If: Connections correct.
and TP3 on the power unit distribution panel.
– Then follow procedures for event code 541.
• If: 0 V.
– Then check FU3.
• If: 24 V.
– Then check for 24 V between CA401-1 and TP3.
• If: 0 V.
– Then repair connection of wire 2953.
• If: 24 V.
– Then replace Access 3™.

Event Code 356

Access 3™ Detected Open Circuit in ED2 Wiring.
All functions disabled.
Step 1: Follow the ED System Troubleshooting pro-
cedure specified for event code 541.

Event Code 357

Access 3™ ED2 Contactor Error.
All functions disabled.
Step 1: Check ED2 contact tips.
• If: Contacts are worn.

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Event Code 358

Event Code 358

Access 3™ Pre-Charge Power Limit Out of Range.
All functions disabled.
Note: Power limit of pre-charge resistor internal to
Access 3™ has been exceeded.
Step 1: Check battery.
• If: Battery is correct voltage and charged.
– Then proceed to Step 2.
• If: Battery is not correct voltage or not properly
charged.
– Then resolve battery issue.
Step 2: Turn on the lift truck and cycle pedal. Using a
DVOM check for 24 V between battery positive and
battery negative power lug on Access 3™.
• If: 24 V.
– Then proceed to Step 3.
• If: Above 0 V but much less than 24 V.
– Then check cables to Access 3™.
Step 3: Turn on the lift truck and, using a DVOM,
check for 24 V between CA401-1 and battery negative
on Access 3™.
• If: Above 0 V but much less than 24 V.
– Then check for 24 V between CA201-5 and
Access 3™ battery negative.
• If: 24 V.
– Then check wiring. Wire 2953 power unit distribu-
tion panel CA201-5 to Access 3™ CA401-1.
• If: Above 0 V but much less than 24 V.
– Then check condition of power unit distribution
panel.

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Event Code 359

Event Code 359 Event Code 360

Access 3™ Pre-Charge Time Limit Exceeded. Access 3™ Pre-Charge Electrical Error.
All functions disabled. All functions disabled.
Step 1: Check battery status. Note: Resistive load is present on the ED2 bus during
• If: Battery has correct voltage and charged. pre-charge this condition is most likely a driver shorted
issue.
– Then proceed to Step 2.
Step 1: Check battery.
• If: Battery does not have correct voltage or not
properly charged. • If: Battery is correct voltage and charged.
– Then resolve battery issue. – Then proceed to Step 2.
Step 2: Turn on the lift truck and, using a DVOM, • If: Battery is not correct voltage or not properly
check for 24 V between CA401-1 and battery negative charged.
on Access 3™. – Then resolve battery issue.
• If: 24 V. Step 2: Check other events logged along side the
– Then proceed to Step 3. 360.
• If: Above 0 V but much less than 24 V.
– Then check voltage between CA201-5 and
Event Code 361
Access 3™ battery negative. Access 3™ Error.
• If: 24 V. All functions disabled.
– Then check wiring. Wire 2953 power unit distribu- Step 1: Replace Access 3™.
tion panel CA201-5 to Access 3™ CA401-1.
• If: Above 0 V but much less than 24 V. Event Code 362
– Then check condition of power unit distribution
THRU
panel.
Event Code 363
Access 3™ Internal Issue.
No action taken.
Step 1: Turn off the lift truck. Then turn on the lift
truck.
• If: Event code continues.
– Then replace Access 3™.

Event Code 364

THRU

Event Code 365

Access 3™ Internal 5 V Supply Out of Range.
All functions disabled.
Step 1: Turn off the lift truck. Then turn on the lift
truck.
• If: Event code continues.
– Then replace Access 3™.

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Event Code 366

Event Code 366

THRU

Event Code 367

Access 3™ +12 V Power Supply for Encoder 3
(ECR3) Out of Range.
All functions disabled.
Event Code 366: Supply voltage high.
Event Code 367: Supply voltage low.
Step 1: Using a DVOM, check for 12 V between wire
315 CA401-3 and TP3 (battery negative) power unit
distribution panel. When 12 V and event code contin-
ues, then check for 12 V at CA411-3 and TP3 (battery
negative).
• If: 0 V.
– Then replace Access 3™.
• If: Less than 12 V and event code continues.
– Then remove wire 315 from CA401-3 and, using
a DVOM, check for 12 V between CA401-3 and
TP3 (battery negative). When 12 V, then replace
ECR3.When less than 12 V and event code con-
tinues, then replace Access 3™.

Event Code 368

THRU

Event Code 369

Access 3™ 15 V Power Supply Out of Range.
All functions disabled.
Step 1: Internal failure.
• If: Event code continues.
– Then replace Access 3™.

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Event Code 370

Event Code 370 • If: Short circuit exists between U, V, W cables, or

frame.
THRU – Then remove phase cabling and check for M1
winding shorts to frame.
Event Code 371 • If: Short exists in M1.
Access 3™ 5 V Power Supply Out of Range. – Then replace M1.
All functions disabled.
Step 1: Internal failure.
• If: Event code continues.
– Then replace Access 3™.

Event Code 372

THRU

Event Code 373

Access 3™ Internal 227 mV Reference Voltage Out
of Range.
All functions disabled. Event Code 379
Step 1: Internal failure.
• If: Event code continues. THRU
– Then replace Access 3™.
Event Code 380
Event Code 374 Access 3™ Internal Short.
THRU Traction disabled.
Step 1: Turn off the lift truck. Then turn on the lift
Event Code 375 truck.
• If: Event code continues.
Access 3™ Internal 2.5 V Reference Voltage Out of
– Then replace Access 3™.
Range.
All functions disabled.
Step 1: Internal failure.
• If: Event code continues.
– Then replace Access 3™.

Event Code 378

Access 3™ Over Current Condition.
Traction disabled.
Step 1: Disconnect traction motor (M1) phase ca-
bling from Access 3™ and Turn on the lift truck.
• If: Event code continues.
– Then replace Access 3™.
• If: Event code clears.
– Then using a DVOM check M1 and cabling for
phase-to-phase and phase-to-frame shorts.

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Event Code 381

Event Code 381 • If: Cables are shorted.

– Then repair as necessary.
THRU • If: Cables are correct.
– Then disconnect traction motor (M1) phase ca-
Event Code 382 bling from Access 3™ and Turn on the lift truck.
Access 3™ Short. • If: Event code continues.
Traction disabled. – Then replace Access 3™.
Event Code 381: Short between battery positive and
terminal U.
Event Code 382: Short between battery negative and
terminal U.
Step 1: Check condition of motor cables.
• If: Cables are shorted.
– Then repair as necessary.
• If: Cables are correct.
– Then disconnect traction motor (M1) phase ca-
bling from Access 3™ and Turn on the lift truck.
• If: Event code continues.
– Then replace Access 3™.

Event Code 385

THRU

Event Code 383

THRU

Event Code 384

Access 3™ Short.
Traction disabled.
Event Code 383: Short between battery positive and
terminal V.
Event Code 384: Short between battery negative and
terminal V.
Step 1: Check condition of motor cables.

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Event Code 386

Event Code 386 – Then disconnect motor cables from Access 3™

and turn on the lift truck.
Access 3™ Short. • If: Event code continues.
Traction disabled. – Then replace Access 3™.
Event Code 385: Short between battery positive and • If: Event code clears.
terminal W.
– Then repair or replace M1.
Event Code 386: Short between battery negative and
terminal W. Event Code 390
Step 1: Check condition of motor cables.
THRU
• If: Cables are shorted.
– Then repair as necessary.
Event Code 392
• If: Cables are correct.
– Then disconnect traction motor (M1) phase ca- Access 3™ Traction Motor (M1) Short.
bling from Access 3™ and Turn on the lift truck. Traction disabled.
• If: Event code continues. Event Code 390: Short V to W.
– Then replace Access 3™. Event Code 391: Short VL to WH.
Event Code 392: Short VH to WL.
Step 1: Check condition of motor cables.
• If: Cables are shorted.
– Then repair as necessary.
• If: Cables are correct.
– Then disconnect traction motor (M1) phase ca-
bling from Access 3™ and Turn on the lift truck.
• If: Event code continues.
– Then replace Access 3™.
• If: Event code clears.
– Then replace M1.

Event Code 393

THRU
Event Code 387
Event Code 395
THRU
Access 3™ Traction Motor (M1) Short.
Event Code 389 Traction disabled.
Access 3™ Short Terminal U to V. Event Code 393: Short W to U.
Traction disabled. Event Code 394: Short WL to UH.
Event Code 387: Short U to V. Event Code 395: Short WH to UL.
Event Code 388: Short UL to VH. Step 1: Check condition of motor cables.
Event Code 389: Short UH to VL. • If: Cables are shorted.
Step 1: Check motor cable connections. – Then repair as necessary.
• If: Short exists between U and V. • If: Cables are correct.
– Then repair as necessary. – Then disconnect traction motor (M1) phase ca-
bling from Access 3™ and Turn on the lift truck.
• If: No short exists.
• If: Event code continues.

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Event Code 396

– Then replace Access 3™. Step 1: Turn on the lift truck and check status of
• If: Event code clears. Access 1 lights.
– Then replace M1. • If: Access 1 lights are on.
– Then issue exists in wiring (003 and 004) be-
Event Code 396 tween Access 1 CA302-9, 8 and platform distri-
bution panel CA105-8, 2. Check connector
THRU mating, connector contact condition, proper con-
tact insertion, contact crimps, and wire condition.
Event Code 397 Check CAN_H and CAN_L wires are not re-
versed.
Pump Motor Over Temperature.
• If: Access 1 lights are off.
Pump motor has worn brushes. No action taken.
– Then check for 24 V between CA302-3 and
Event Code 396: Pump motor M3. CA302-4.
Event Code 397: Pump motor M4. • If: 24 V.
Step 1: Check appropriate pump motor for dirt build- – Then replace Access 1.
up.
• If: 0 V.
• If: Dirt is present.
– Then issue exists in the wiring connected to
– Then clean as needed. CA302-3 or CA302-4.
Step 2: Check for loose connections and corroded • If: Issue continues.
terminals.
– Then trace wiring from Access 1, CA302-8 to
• If: Loose connections and corroded terminals platform distribution panel CA105-8, -2.
found.
Step 2: Turn off the lift truck using a DVOM check re-
– Then tighten or clean as needed. sistance between CAN_H and CAN_L platform distri-
Step 3: Check pump assembly to ensure that me- bution panel TP13 and TP14. Resistance is
chanical binding does not exist. approximately 60 Ω.
• If: Mechanical issues exist. • If: 0 Ω.
– Then repair or replace pump as needed. – Then short exists between CAN_H and CAN_L.
Short is present in one of the ACCESSES. Find
Event Code 398 short by unhooking ACCESSES from the CAN
bus one at a time and check resistance between
Pump Motor Brush Wear. CAN_H and CAN_L.
Pump motor M3 or M4 has worn brushes. No action • If: Greater than 60 Ω.
taken. – Then CAN bus terminating resistors are missing
Step 1: Check brushes. CAN bus contains two terminating resistors, one
• If: Brushes are worn. located in Access 5 and the other in Access 1.
– Then replace as needed. • If: All wiring is correct and event continues.
Note: Replace the brush springs also. – Then replace Access 1 or Access 5.
Intermittent connection test.
Event Code 401 • If: Codes 104 or 106 are also displayed.
Access 4 / Access 1 CAN Error. – Then intermittent connection exists in wiring (003
and 004) between Access 1 CA302-9, -8 and
No action taken.
platform distribution panel CA105-8, -2. Locate
Note 1: If event code 401 is displayed on Access 1, and repair or replace as necessary.
issue was caused by an intermittent open wire
Step 3: Check for CAN line for short to battery nega-
condition. See the intermittent connection test at the
tive, battery positive, and the lift truck frame. Turn off
end of Step 2.
the lift truck and disconnect battery. Using a DVOM,
Note 2: If event code 401 is flashing on Access 4 but is check the resistance at the power unit from CAN_L to
not displayed on Access 1, then proceed to Step 1. BV bus bar, CAN_L to TP15 and TP16 on power unit

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Event Code 405

distribution panel and CAN_L to the lift truck frame. Re- • If: Event continues.
sistance is greater than 10,000 Ω. – Then check wiring between Access 5, CA402-4,
• If: Less than 10,000 Ω. -5 and power distribution panel CA204-8, -2.
– Then replace wiring as necessary. Step 2: Turn off the lift truck and check the resistance
between CAN_H and CAN_L at the power unit distribu-
tion panel TP15 and TP16. Resistance is approxi-
mately 60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Short is present in one of the ACCESSES. Find
short by unhooking ACCESSES from the CAN
bus one at a time and check resistance between
CAN_H and CAN_L.
• If: Greater than 60 Ω.
– Then CAN bus terminating resistors are missing.
CAN bus contains two terminating resistors, one
located in Access 5 and the other in Access 1.
Step 3: Check CAN line short to battery negative,
battery positive, and the lift truck frame. Turn off the lift
truck and disconnect battery. Using a DVOM, check the
resistance at the power unit CAN_L to battery negative
bus bar, CAN_L to TP15 and TP16 on power unit dis-
tribution panel and CAN_L to the lift truck frame. Resis-
tance is greater than 10,000 Ω.
• If: Less than 10,000 Ω.
– Then repair wiring as necessary.
• If: All wiring is correct.
– Then replace Access 5 or Access 4.
Event Code 405
Access 5 CAN timeout.
No action taken.
Step 1: Turn on the lift truck and check the status of
Access 5 lights.
• If: Access 5 lights are on.
– Then issue exists in wiring (019 and 020) be-
tween Access 5 CA402-4, -5 and power unit dis-
tribution panel CA204-2, -8. Check connector
mating, connector contact condition, proper con-
tact insertion, contact crimps, and wire condition.
Verify that CAN_H and CAN_L wires are not re-
versed.
• If: Access 5 lights are off.
– Then check for 24 V between CA403-10 and bat-
tery negative.
• If: 24 V.
– Then replace Access 5.
• If: 0 V.
– Then issue exists in wiring to CA403-10.

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Event Code 411

Event Code 411

Access 4 / Access 1 CAN Error.
All functions disabled.
Step 1: Turn on the lift truck and check the status of
Access 1 power light.
• If: Access 1 power light is on.
– Then proceed to Step 2.
• If: Access 1 power light is off.
– Then check for 24 V to Access 1. Place DVOM
leads battery positive on CA302-3 and battery
negative on CA302-4.
• If: 24 V.
– Then check connector terminals and wiring for
possible intermittence.
• If: 0 V.
– Then issue exists in wiring between CA302-3,
CA105-10, CA302-4 and CA107-8 on the plat-
form distribution panel.
Step 2: Check CAN communication lines.
• If: Event code continues and Access 1 is on.
– Then turn off the lift truck. Check resistance be-
tween CAN_H and CAN_L on either the power
unit or platform distribution panel. resistance is
60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Short is present in one of the ACCESSES. Find
short by unplugging ACCESSES from the CAN
bus one at a time and check resistance between
CAN_H and CAN_L.
• If: Greater than 60 Ω with all connectors connected.
– Then CAN bus-terminating resistor is missing or
damaged, or wiring to the terminating resistor is
open. CAN bus contains two terminating resis-
tors, one in the Access 5 and the other in
Access 1.
Step 3: Check CAN line for short to battery negative,
battery positive, and the lift truck frame. Turn off the lift
truck and disconnect battery. Using a DVOM, check the
resistance at the power unit distribution panel CAN_L
to BV bus bar and CAN_L to TP15 and TP16 and to the
lift truck frame. Resistance is greater than 10,000 Ω.
• If: Less than 10,000 Ω.
– Then replace wiring as necessary.

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Event Code 413

Event Code 413

Access 4 / Access 3™ CAN Error.
All functions disabled.
Step 1: Turn on the lift truck. Verify status of
Access 3™ power light.
• If: Access 3™ power light is on.
– Then proceed to Step 2.
• If: Access 3™ power light is off.
– Then check for 24 V to Access 3™ connect a
DVOM between battery positive CA401-1 and
battery negative power terminal.
• If: 24 V.
– Then check connector, terminals, and wiring for
possible intermittence.
• If: 0 V.
– Then issue exists in wiring between CA401-1 and
CA201-5 on the power unit distribution panel.
Step 2: Check CAN communication lines.
• If: Event code continues - Access 1 is on.
– Then turn off the lift truck and check resistance
between CAN_H and CAN_L on either the power
unit or platform distribution panels. resistance is
60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Short is present in one of the ACCESSES. Find
short by unplugging ACCESSES from the CAN
bus one at a time and check resistance between
CAN_H and CAN_L.
• If: Greater than 60 Ω with all connectors connected.
– Then CAN bus-terminating resistor is missing or
damaged, or wiring to the terminating resistor is
open. CAN bus contains two terminating resis-
tors, one in Access 5 and the other in Access 1.
Step 3: Check CAN line for short to battery negative,
battery positive, and the lift truck frame. Turn off the lift
truck and disconnect battery. Using a DVOM, check the
resistance at the power unit distribution panel CAN_L
to battery negative bus bar also CAN_L to TP15 and
TP16 and CAN_L to the lift truck frame. Resistance is
greater than 10,000 Ω.
• If: Less than 10,000 Ω.
– Then replace wiring as necessary.

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Event Code 415

Event Code 415

Access 4 / Access 5 CAN Error.
No action taken.
Step 1: Turn on the lift truck. Check status of
Access 5 power light.
• If: Access 5 power light is on.
– Then proceed to Step 2.
• If: Access 5 lights are off.
– Then check for 24 V between CA403-10 and
CA403-26.
• If: 24 V.
– Then replace Access 5.
• If: 0 V.
– Then issue exists in wiring connected between
CA403-10 or CA403-26 or FU8 on the power unit
distribution panel.
Step 2: Check CAN communication lines.
• If: Event code continues and Access 5 lights are
on.
– Then turn off the lift truck and check resistance
between CAN_H and CAN_L on either the power
unit or platform distribution panel. resistance is
60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Short is present in one of the ACCESSES. Find
short by unplugging ACCESSES from the CAN
bus one at a time and check resistance between
CAN_H and CAN_L.
• If: Greater than 60 Ω with all connectors connected.
– Then CAN bus terminating resistor is missing or
damaged, or wiring to the terminating resistor is
open. CAN bus contains two terminating resis-
tors one in Access 5 and the other in Access 1.
Step 3: Check CAN line for short to battery negative,
battery positive, and the lift truck frame. Turn off the lift
truck and disconnect battery. Using a DVOM, check the
resistance at the power unit distribution panel between
CAN_L and battery negative bus bar, CAN_L to TP15
and TP16 and CAN_L to the lift truck frame. Resis-
tance is greater than 10,000 Ω.
• If: Less than 10,000 Ω.
– Then replace wiring as necessary.

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Event Code 416

Event Code 416

Access 4 / Access 6 CAN Error.
No action taken.
Step 1: Turn on the lift truck. Check status of
Access 6 power light.
• If: Access 6 power light is on.
– Then proceed to Step 2.
• If: Access 6 lights are off.
– Then check for 24 V between CA403-10 and
CA403-26.
• If: 24 V.
– Then replace Access 6.
• If: 0 V.
– Then issue exists in wiring between CA403-10 or
CA403-26 or FU8 on the power unit distribution
panel.
Step 2: Check CAN communication lines.
• If: Event code continues and Access 6 lights are
on.
– Then turn off the lift truck and check resistance
between CAN_H and CAN_L on either the power
unit or platform distribution panels. resistance is
60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Short is present in one of the ACCESSES. Find
short by unplugging ACCESSES from the CAN
bus one at a time and check resistance between
Event Code 421
CAN_H and CAN_L. Access 4 Internal Fault.
• If: Greater than 60 Ω with all connectors connected. All functions disabled.
– Then CAN bus terminating resistor is missing or Step 1: Replace Access 4.
damaged, or the wiring to the terminating resistor
is open. CAN bus contains two terminating resis-
tors one located in Access 5 and the other in
Access 1.
Step 3: Check CAN line for short to battery negative,
battery positive, and the lift truck frame. Turn off the lift
truck and disconnect battery. Using a DVOM, check the
resistance at the power unit distribution panel between
CAN_L and battery negative bus bar also CAN_L to
TP15 and TP16 and CAN_L to the lift truck frame. Re-
sistance is greater than 10,000 Ω.
• If: Less than 10,000 Ω.
– Then replace wiring as necessary.

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Event Code 422

Event Code 422

Access 4 Potentiometer 1 (POT1) +5 V Power Sup-
ply Out of Range.
Full traction disabled.
Step 1: Using a DVOM, check for 5 V between wire
701 CA303-4 and TP16 power unit distribution panel.
• If: 5 V and event code continues.
– Then check for 5 V at CA309-2 and TP16.
• If: 0 V.
– Then replace Access 5.
• If: Less than 5 V and event code continues.
– Then remove wire 701 from CA303-4 and, with a
DVOM, check for 5 V between CA303-4 and
TP16.
• If: Less than 5 V.
– Then replace Access 4.
• If: 5 V.
– Then a short exists in wiring. Repair or replace
wiring as necessary.

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Event Code 423

Event Code 423

Access 4 Potentiometer 1 (POT1) is Out of Electri-
cal Limits.
Full traction disabled.
Step 1: Enter Service Mode two then Analyzer. Se-
lect POT1 A2.3.3 on display menu and view reading on
display.
• If: 5 V or greater.
– Then POT1 is either incorrectly wired, wire be-
tween POT1 and Access 4 is shorted to the lift
truck frame or an open wire exists. Check condi-
tion and correctness of wiring and connector ter-
minals between Access 4 CA303-1, -4, -19 and
POT1.
• If: Wiring and terminals are correct.
– Then replace POT1.
• If: Between 2.1 V and 2.9 V.
– Then multi-task handle in center position.
• If: Between 0.7 V and 1.5 V.
– Then multi-task handle in full forward position.
• If: Between 3.4 V and 4.3 V.
– Then multi-task handle in full reverse position.
• If: Correct POT1 readings are confirmed.
– Then an intermittent connection in POT1 circuit
exists. Inspect POT1, wiring to POT1 and termi- Event Code 424
nals in connector at Access 4 CA303-1, -4, -19.
Access 4 Potentiometer 1 (POT1) Does Not Match
• If: All check correctly.
Forward Switch (FS).
– Then replace POT1.
Full traction disabled.
• If: Below 0.7 V.
Step 1: FS/POT1 operation. Enter Service Mode 2
– Then POT1 is incorrectly wired, wires between and select handle Analyzer menu. Input status of FS,
POT1 and Access 4 are shorted together or a with handle in neutral, is opened as indicated by 0 on
wire is open. Check condition and correctness of display A2.3.7. POT1 reading on display A2.3.3 is be-
wiring and connector terminals between tween 2.1–2.9 volts. Moving the handle to full forward
Access 4 CA303-1, -4, -19 and POT1. position, the toggle switches to closed, display to 1
• If: Wiring and terminals are correct. A2.3.7. Reading for POT1 A2.3.3 is between 4.0–4.6
– Then replace POT1. volts.
• If: Readings are not as listed.
– Then check switch for damaged wiring or physi-
cal damage. Wire 2907 to FS and wire 2908 to
RS.
• If: Damaged.
– Then replace switches as needed, taking care to
properly route harness. After switch replacement,
calibrate handle.
• If: POT1 not within limits.
– Then recalibrate handle.

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Event Code 425

Event Code 425 • If: Selected switch display is 1 with handle in neu-
tral.
Access 4 Potentiometer 1 (POT1) Does Not Match – Then replace Access 4.
Reverse Switch (RS).
Full traction disabled. Event Code 427
Step 1: RS/POT1 operation enter Service Mode 2.
Access 4 Potentiometer 1 (POT1) and Reverse
Select handle Analyzer menu. Input status of RS, with
Switch (RS) Out of Range.
handle in neutral, is opened as indicated by 0 on dis-
play A2.3.6. POT1 reading on display A2.3.3 is be- Full traction disabled.
tween 2.1–2.9 volts. Moving the handle to full reverse Step 1: Using a DVOM, check for 5 V between
position, the toggle switches to closed, display to 1 CA303-19 and TP16 on the platform distribution panel.
A2.3.6. Reading for POT1 A2.3.3 is between 4.0–4.6 • If: Greater than 5 V.
volts.
– Then check wires 581 CA303-19, wire 506
• If: Readings are not as listed. CA309-3, and wire 519 CA307-5 for shorts to bat-
– Then check switch for damaged wiring or physi- tery positive or the lift truck frame.
cal damage. Wire 2907 to FS and wire 2908 to • If: 0 V.
RS.
– Then replace Access 4.
• If: Damaged.
– Then replace switches as needed, taking care to
properly route harness. After switch replacement,
calibrate handle.
• If: POT1 not within limits.
– Then recalibrate handle.

Event Code 426

Access 4 Forward Switch (FS) and Reverse Switch
(RS) Closed at Same Time.
Full traction disabled.
Step 1: Check FS and RS for damage to wiring or
switch and mounting.
• If: Damaged.
– Then replace switch and calibrate handle.
• If: Correct.
– Then proceed to Step 2.
Step 2: Enter Service Mode 2 and select Analyzer
menu for FS A2.3.7 and RS A2.3.6. Check status of FS
and RS with handle in neutral position.
• If: Either FS or RS is 1.
– Then select that switch to use in Step 3.
• If: Both FS and RS are 1.
– Then choose either switch and proceed to Step 3.
Step 3: Check switch function by disconnecting out-
put wire of selected switch, wire 2907 on FS or wire
2908 on RS.
• If: Selected switch display changes to 0 when
switch wire is disconnected.
– Then replace switch and calibrate handle.

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Event Code 429

Event Code 429

Access 4 Encoders ECR1/ECR5 Count Error.
Steering and traction disabled.
Note: If count between ECR1/ECR5 is not equal, event
code is logged. Possibly due to loss of power and or
Channel A or B of either encoder.
Step 1: Enter Service Mode 2 and select ECR1
A2.3.2 in Analyzer menu. View reading on the display.
• If: ECR1 operates.
– Then proceed to Step 2.
• If: ECR1 does not operate.
– Then proceed to Step 3.
Step 2: Enter Service Mode 2 and select ECR5
A2.3.2 in Analyzer menu. View reading on the display.
• If: ECR5 operates.
– Then the issue exists due to intermittent ECR1,
ECR5, Access 4 or wiring in between these com-
ponents. Proceed through Steps 3 and 4, repair-
ing any issues encountered.
• If: ECR5 does not operate.
– Then proceed to Step 3.
Step 3: Turn off the lift truck. Check tiller knob for slip-
page between ECR1, ECR5, and tiller knob. Also
check for damaged or broken wires between ECR1
and ECR5 to CA318.
• If: Slippage is observed or any wiring issues.
Step 5: Disconnect CA318 and turn on the lift truck.
– Then repair as necessary.
Using a DVOM, check for 12 V to ECR1 at CA318-4,
Step 4: Turn off the lift truck. Check wire and termi- -3.
nals where ECR1 and ECR5 enter Access 4,
• If: Between 11.5–12.5 V.
CA304-16, -23.
– Then reconnect CA318 and again check for 12 V.
• If: Wiring or terminals issues are found.
• If: Not between 11.5–12.5 V.
– Then repair as necessary.
– Then replace ECR1.
• If: Between 11.5–12.5 V.
– Then proceed to Step 6.
• If: Not between 11.5–12.5 V with CA318 discon-
nected and ECR1 replaced.
– Then check for 12 V at Access 4 between
CA304-18, -19.
• If: Not between 11.5–12.5 V.
– Then replace Access 4.
• If: Between 11.5–12.5 V.
– Then check continuity of the harness between
CA318-3 to CA304-18 and CA318-4 to
CA304-19.

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Event Code 429

Step 7: Reconnect CA318 and turn on the lift truck.

Step 6: Disconnect CA318 and turn on the lift truck. Check for encoder counts to ECR1 CHA. Connect
Check for 12 V to ECR5 at CA318-7, -8. DVOM between CA304-16 (-17 on "forks first steer" lift
• If: Between 11.5–12.5 V. trucks) and -19 turn the tiller knob slowly.
– Then reconnect CA318 and check for 5 V. • If: Voltage slowly changes from 0.5 V to 11.5 V.
• If: Not between 11.5–12.5 V. – Then proceed to Step 8.
– Then replace ECR5. • If: Voltage does not change back and forth from
0.5 V to 11.5 V.
• If: Between 11.5–12.5 V.
– Then check for ECR1 CHA for 0.5 V to 11.5 V be-
– Then proceed to Step 7.
tween CA318-1, -4.
• If: Not between 11.5–12.5 V with CA318 still dis-
• If: Voltage slowly changes from 0.5 V to 11.5 V.
connected.
– Then check wiring harness between CA304 and
– Then check for 12 V at Access 4 between
CA318.
CA304-20, -21.
• If: Voltage does not change from 0.5 V to 11.5 V.
• If: Not between 11.5–12.5 V.
– Then replace ECR1.
– Then replace Access 4.
Step 8: Turn on the lift truck. With CA318 and CA304
• If: Between 11.5–12.5 V.
connected, check ECR1 CHB encoder counts. Con-
– Then check continuity of the harness between nect a DVOM between CA304-18, -19 and slowly turn
CA318-7 and CA304-21 also from CA318-8 and the tiller knob.
CA304-20.
• If: Voltage slowly changes from 0.5 V to 11.5 V.
– Then proceed to Step 9.
• If: Voltage does not change from 0.5 V to 11.5 V.

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Event Code 429

– Then check voltage for CH B between CA318-2, nect DVOM between CA304-23 (-22 on "forks first
-4. steer" lift trucks) and -20 and slowly turn the tiller knob.
• If: Voltage slowly changes from 0.5 V to 11.5 V. • If: Voltage changes from 0.5 V to 11.5 V and event
– Then check wiring harness between CA304 to code continues.
CA318. – Then replace Access 4.
• If: Voltage does not change from 0.5 V to 11.5 V. • If: Voltage does not change from 0.5 V to 11.5 V.
– Then replace ECR1. – Then check ECR CHB voltage between
CA318-6, -8.
• If: Voltage changes from 0.5 V to 11.5 V.
– Then check wiring harness between CA304 to
CA318.
• If: Voltage does not change from 0.5 V to 11.5 V.
– Then replace ECR5.

Step 9: Turn on the lift truck. With CA318 and CA304

connected, check ECR5 CHA for encoder counts. Con-
nect a DVOM to CA304-22 (-23 on "forks first steer" lift
trucks) and -20 and slowly turn the tiller knob.
• If: Voltage changes from 0.5 V to 11.5 V.
– Then proceed to Step 10.
• If: Voltage does not change from 0.5 V to 11.5 V.
– Then check ECR5 CHA voltage between
CA318-5, -8.
• If: Voltage changes from 0.5 V to 11.5 V.
– Then check wiring harness between CA304 to
CA318.
• If: Voltage does not change from 0.5 V to 11.5 V.
– Then replace ECR5.
Step 10: Turn on the lift truck. With CA318 and CA304
connected, check ECR5 CHB encoder counts. Con-

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Event Code 430

Event Code 430

Access 4 Encoders ECR1/ECR5 Turn Rate Error.
Full traction disabled.
Note: Event is logged when rate difference between
ECR1/ECR5 occur. ECR1/ECR5 turn at the same rate
through the tiller knob cause for this event code could
be ECR slippage, failure, open or intermittent wiring
between ECR1/ECR5 and Access 4.
Step 1: Enter Service Mode 2 and select ECR1
A2.3.2 in Analyzer menu. View reading on the display.
• If: ECR1 operates.
– Then proceed to Step 2.
• If: ECR1 does not operate.
– Then proceed to Step 3.
Step 2: Enter Service Mode 2 and select ECR5
A2.3.2 in Analyzer menu. View reading on the display.
• If: ECR5 operates.
– Then the issue is due to intermittent ECR1,
ECR5, Access 4 or wiring in between these com-
ponents. Proceed through Steps 3 and 4, repair-
ing any issues encountered.
• If: ECR5 does not operate.
– Then proceed to Step 3.
Step 3: Turn off the lift truck. Check tiller knob for slip-
page between ECR1, ECR5, and tiller knob. Also
check for damaged or broken wires between ECR1
and ECR5 to CA318. Step 5: Disconnect CA318 and turn on the lift truck.
• If: Slippage is observed or any wiring issues. Using a DVOM, check for 12 V to ECR1 at CA318-4,
-3.
– Then repair as necessary.
• If: Between 11.5–12.5 V.
Step 4: Turn off the lift truck. Check wire and termi-
nals where ECR1 and ECR5 enter Access 4, – Then reconnect CA318 and again check for 12 V.
CA304-16, -23. • If: Not between 11.5–12.5 V.
• If: Wiring or terminal issues are found. – Then replace ECR1.
– Then repair as necessary. • If: Between 11.5–12.5 V.
– Then proceed to Step 6.
• If: Not between 11.5–12.5 V with CA318 discon-
nected and ECR1 replaced.
– Then check for 12 V at Access 4 between
CA304-18, -19.
• If: Not between 11.5–12.5 V.
– Then replace Access 4.
• If: Between 11.5–12.5 V.
– Then check continuity of the harness between
CA318-3 and CA304-18 also CA318-4 to
CA304-19.

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Event Code 430

Step 6: Disconnect CA318 and turn on the lift truck. • If: Voltage does not change back and forth from
to check for 12 V to ECR5 at CA318-7, -8. 0.5 V to 11.5 V.
• If: Between 11.5–12.5 V. – Then check for ECR1 CHA for 0.5–11.5 V be-
– Then reconnect CA318 and check for 5 V. tween CA318-1, -4.
• If: Not between 11.5–12.5 V. • If: Voltage slowly changes from 0.5 V to 11.5 V.
– Then replace ECR5. – Then check wiring harness between CA304 and
CA318.
• If: Between 11.5–12.5 V.
• If: Voltage does not change from 0.5 V to 11.5 V.
– Then proceed to Step 7.
– Then replace ECR1.
• If: Not between 11.5–12.5 V with CA318 still dis-
connected. Step 8: Turn on the lift truck with CA318 and CA304
connected check ECR1 CHB encoder counts. Connect
– Then check for 12 V at Access 4 between
a DVOM between CA304-18, -19 and slowly turn the
CA304-20, -21.
tiller knob.
• If: Not between 11.5–12.5 V.
• If: Voltage slowly changes from 0.5 V to 11.5 V.
– Then replace Access 4.
– Then proceed to Step 9.
• If: Between 11.5–12.5 V.
• If: Voltage does not change from 0.5 V to 11.5 V.
– Then check harness continuity between CA318-7
– Then check voltage for CHB between CA318-2,
and CA304-21, CA318-8 and CA304-20.
-4.
• If: Voltage slowly changes from 0.5 V to 11.5 V.
– Then check wiring harness between CA304 to
CA318.
• If: Voltage does not change from 0.5 V to 11.5 V.
– Then replace ECR1.
–

Step 7: Reconnect CA318 and turn on the lift truck. to

check for encoder counts to ECR1 CHA. Connect
DVOM between CA304-16 (-17 on "forks first steer" lift
trucks) and -19 and turn the tiller knob slowly.
• If: Voltage slowly changes from 0.5 V to 11.5 V.
– Then proceed to Step 8.

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Event Code 430

Step 9: Turn on the lift truck. With CA318 and CA304

)

connected, check ECR5 CHA for encoder counts. Con-

nect a DVOM to CA304-22 (-23 on "forks first steer" lift
trucks) and -20 and slowly turn the tiller knob.
• If: Voltage changes from 0.5 V to 11.5 V.
– Then proceed to Step 10.
• If: Voltage does not change from 0.5 V to 11.5 V.
– Then check ECR5 CHA voltage between
CA318-5 and -8.
• If: Voltage changes from 0.5 V to 11.5 V.
– Then check wiring harness between CA304 to
CA318.
• If: Voltage does not change from 0.5 V to 11.5 V.
– Then replace ECR5.
Step 10: Turn on the lift truck. With CA318 and CA304
connected, check ECR5 CHB encoder counts. Con-
nect DVOM between CA304-23 (-22 on "forks first
steer" lift trucks) and -20 and slowly turn the tiller knob.
• If: Voltage changes from 0.5 V to 11.5 V and event
code continues.
– Then replace Access 4.
• If: Voltage does not change from 0.5 V to 11.5 V.
– Then check ECR CHB voltage between CA318-6
and -8.
• If: Voltage changes from 0.5 V to 11.5 V.
– Then check wiring harness between CA304 and
CA318.
• If: Voltage does not change from 0.5 V to 11.5 V.
– Then replace ECR5.

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Event Code 431

Event Code 431

Access 4 Encoders ECR1/ECR5 Direction Error.
Steering and traction disabled.
Note: ECR1/ECR5 turn at the same time. If a
difference in direction occurs due to a wiring error or
slippage, event code 431 is logged.
Step 1: Enter service mode 2 and select ECR1
A2.3.2 in Analyzer menu. View reading on the display.
• If: ECR1 operates.
– Then proceed to Step 2.
• If: ECR1 does not operate.
– Then proceed to Step 3.
Step 2: Enter service mode 2 select ECR5 A2.3.2 in
Analyzer menu. View reading on the display.
• If: ECR5 operates.
– Then the issue is due to intermittent ECR1,
ECR5, Access 4 or wiring in between these com-
ponents. Proceed through Steps 3 and 4, repair-
ing any issues encountered.
• If: ECR5 does not operate.
– Then proceed to Step 3.
Step 3: Turn off the lift truck. Check tiller knob for slip-
page between ECR1, ECR5, and tiller knob. Also
check for damaged or broken wires between ECR1
and ECR5 to CA318.
• If: Slippage is observed or any wiring issues.
– Then repair as necessary.
Step 4: Turn off the lift truck. Check ECR1/ECR5 wire
connections at Access 4. ECR1 CA304-18, -16, -17,
-19, and ECR5 CA304-21, -22, -23, -20.
• If: Wire issues exist. Step 5: ECR1 test. Disconnect CA318 and turn on
the lift truck. Using a DVOM check for 12 V to ECR1
– Then repair as necessary. between CA318-3, -4.
• If: Between 11.5–12. 5 V.
– Then turn off the lift truck and reconnect CA318
and again check for 12 V.
• If: Not between 11.5–12.5 V.
– Then replace ECR1.
• If: Between 11.5–12.5 V.
– Then proceed to Step 6.

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Event Code 431

Step 6: ECR5 test. Disconnect CA318 and turn on – Then check for CHA voltage between CA318-1,
the lift truck. Using a DVOM check for 12 V to ECR5 -4.
between CA318-7, -8. • If: Voltage changes from 0.5 to 11.5 V.
• If: Between 11.5–12.5 V. – Then check wiring harness from CA304 to
– Then turn off the lift truck and reconnect CA318 CA318.
and again check for 12 V. • If: Voltage does not change.
• If: Not between 11.5–12.5 V. – Then replace ECR1.
– Then replace ECR5.
• If: Between 11.5–12.5 V.
– Then proceed to Step 7.

Step 7: Connect CA318 and CA304, turn on the lift

truck. Connect a DVOM between CA304-11, -19 and
slowly turn the tiller knob.
• If: Voltage changes from 0.5 V to 11.5 V.
– Then proceed to Step 8.
• If: Voltage does not change.

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Event Code 431

Step 8: With power on and CA318/CA304 con- Step 9: With vehicle power on and CA318/CA304
nected, check for encoder counts to ECR1 CHB. Con- connected, check for encoder counts to ECR5 CHA.
nect meter between CA304-12, -19 then slowly turn the Connect meter between CA304-7, -20 then slowly turn
tiller knob. the tiller knob.
• If: Voltage changes from 0.5 V to 11.5 V. • If: Voltage from 0.5 V to 11.5 V.
– Then proceed to Step 9. – Then proceed to Step 10.
• If: Voltage does not change. • If: Voltage does not change.
– Then check for CHB voltage between CA318-2, – Then check voltage for CHA between CA318-5,
-4. -8.
• If: Voltage changes from 0.5 V to 11.5 V. • If: Voltage changes from 0.5 V to 11.5 V.
– Then check wiring harness between CA304 to – Then check wiring harness between CA304 and
CA318. CA318.
• If: Voltage does not change. • If: Voltage does not change.
– Then replace ECR1. – Then replace ECR5.

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Event Code 431

Step 10: With vehicle power on and CA318/CA304

connected, check for encoder counts to ECR5 CHB.
Connect meter between CA304-8, -20 then slowly turn
the tiller knob.
• If: Voltage changes from 0.5 V to 11.5 V and event
code continues.
– Then replace Access 4.
• If: Voltage does not change.
– Then check for voltage to CHB between
CA318-6, -8.
• If: Voltage changes from 0.5 V to 11.5 V.
– Then check wiring harness between CA304 and
CA318.
• If: Voltage does not change.
– Then replace ECR5.

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Event Code 432

Event Code 432 – Then replace Access 4.

Access 4 Height Encoder 4 (ECR4) Power Supply Event Code 435

Out of Range.
Access 4 Height Encoder 4 (ECR4) Reset Error.
Full traction and high speed raise disabled.
Full traction and raise speed 2 disabled.
Step 1: Connect DVOM leads between CA303-12
and battery negative then turn on the lift truck. Step 1: Fully lower platform then raise approximately
three feet and lower.
• If: Voltage is not between 4.75 V and 5.5 V.
• If: Event code repeats.
– Then disconnect wire from CA303-12 and check
voltage at CA303-12. – Then proceed to Step 2.
• If: Voltage is between 4.75 V and 5.5 V with wire • If: Event code does repeat.
removed. – Then resume the lift truck operation and monitor.
– Then short exists in wiring or ECR4. Check wiring Step 2: Enter service mode 2 Analyzer menu and go
between ECR4 and CA303-12 through -15. Ver- to A2.3.1.1, fully lowered raise platform and observe
ify that insulation is not cut and shorted to frame. display.
• If: Wiring is correct and event code continues. • If: Height in inches changes.
– Then replace ECR4. – Then proceed to Step 3.
• If: Voltage is not between 4.75–5.5 V with wire re- • If: Height in inches does not change.
moved. – Then proceed to Step 4.
– Then replace Access 4. Step 3: Enter service mode 2 Analyzer menu and go
to A2.3.10. A fully lowered raise platform approximately
3 ft at 18 in the height reset switch (HTGRS) state s
changes from closed to open.
• If: State does not change.
– Then check HTGRS and associated wiring.
Step 4: Disconnect CA317 and check encoder wiring
for damaged crimps. If necessary, remove wires from
connector for inspection.
• If: Wiring crimps are damaged.
– Then repair or replace ECR 4 as necessary.
Pin 1: White
Pin 2: Blue
Pin 3: Red
Pin 4: Black

Event Code 433

Access 4 5 V Power Supply Out of Range.
Traction and raise disabled.
Step 1: Turn off the lift truck. Then turn on the lift
truck.
• If: Event code continues.

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Event Code 440

Step 5: Disconnect CA317 using a DVOM check volt-

age to ECR4 between CA317-3, -4.
• If: 5 V.
– Then reconnect CA317 and proceed to Step 6.
• If: Not 5 V.
– Then remove wire 703 and 516 from CA303 and
using a DVOM check voltage between pins
CA303-12, -15.
• If: 5 V.
– Then check all wiring. Wire 703 CA303-12 to
CA317-3 and wire 516 CA303-15 to CA317-4.
• If: Not 5 V.
– Then replace Access 4.
Step 6: Check ECR4 channel wiring. Wire 007
CA317-1 to CA303-13, wire 008 CA317-2 to
CA303-14.
• If: Wiring is correct and event code continues.
– Then disconnect CA317, remove white and blue
wires from JC317-1 and JC317-2. Connect a
DVOM from white (ECR4 CHA) to battery nega-
tive, turn on the lift truck and check voltage.
Reading is 0 V or 5 V depending on position of
ECR4. Perform the same test on the blue wire
(ECR4 CH B). Event Code 440
• If: Not 0 V or 5 V.
Access 4 Zone Select (ZSS) Switch Wiring Open.
– Then replace ECR4.
Raise disabled.
• If: 0 V or 5 V.
Note: If the zone select option is enabled in the lift truck
– Then reconnect wiring. features, the lift truck requires that one of the three
• If: 0 V or 5 V and event code continues. outputs from the switch be closed. This condition
– Then replace Access 4. indicates that the feature is enabled and none of the
three outputs are closed or the wire feeding the switch
is open.
Step 1: Check zone select switch.
• If: Zone switch is broken.
– Then replace as necessary.
• If: Zone switch is enabled and the lift truck is not
equipped with zone select.
– Then access service level 2 mode and disable
zone select feature.
• If: Zone switch is enabled and is present.
– Then check wiring between zone select switch
and Access 4.
• If: Wiring is correct and event code continues.
– Then replace Access 4.

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Event Code 441

Event Code 441

Access 4 Zone Select (ZSS) Switch Wiring Shorted.
Raise disabled.
Note: If the zone select option is enabled in the lift truck
features the lift truck requires that one of the three
outputs from the switch be closed. This condition
indicates that more than one of the switch outputs are
closed simultaneously and therefore the lift truck
cannot see the requested zone.
Step 1: Check condition of wiring between switch
and CA303-23, CA304-13, -14.
• If: Wires are shorted.
– Then repair as necessary.
• If: Wires are correct.
– Then proceed to Step 2.
Step 2: Using a DVOM, check the ZSS for internal
shorts. Each individual internal switch must be isolated
from the other.
• If: Switch is shorted.
– Then replace ZSS switch.
• If: Switch is correct and event code continues.
– Then replace Access 4.

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Event Code 442

Event Code 442

Access 4 Zone Select Switch (ZSS) Detected, but
Feature Not Enabled.
Raise disabled.
Note: If the lift truck has zone select option see Step 1.
If the lift truck does not have zone select option, then
see Step 2.
Step 1: Enter service mode 2 and proceed to fea-
tures and enable zone select.
• If: Event code continues.
– Then replace Access 4.
Step 2: Enter service mode 2 go to features and zone
select.
• If: Zone select is enabled.
– Then disable.
• If: Zone select is disabled.
– Then connect a DVOM to TP7 on platform distri-
bution panel and check for 24 V between
CA303-23, CA304-13, -14.
• If: 24 V is not present at any point.
– Then replace Access 4.
• If: Any terminal is shorted to negative.
– Then repair short as necessary.

Event Code 443

Access 4 Invalid Zone Select Setup.
Raise disabled.
Step 1: Enter service mode 2 and proceed to Fea-
tures menu, enter correct cutout configuration setups.
• If: Event code continues.
– Then replace Access 4.

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Event Code 445

Event Code 445

Access 4 (lifting fork option only) PVLF Driver
Open.
Nothing disabled.
Step 1: Disconnect wires 29129, 29130 and 5938
from PVLF coil using a DVOM check resistance of
PVLF coil.
• If: Less than 29 Ω.
– Then replace PVLF coil.
• If: 29 Ω.
– Then check for 24 V between wires 29129,
29130 and 5938 while depressing lifting forks
lower switch.
• If: 0 V.
– Then disconnect wire 5941 from CA304-4 and
check for 24 V between CA304-4 and TP7 on the
platform distribution panel while depressing
lower switch.
• If: 0 V.
– Then replace Access 4.
• If: 24 V.
– Then check for 24 V between wire 29129, 29130
and TP3 on the power unit distribution panel.
• If: 0 V.
– Then check lower switch and associated wiring.
• If: 24 V.
– Then check connection of CA325, CA701, and
CA809.

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Event Code 446

Event Code 446

Access 4 (Lifting Fork Option Only) PVLF Shorted.
Nothing disabled.
Step 1: Disconnect wires 29129, 29130 and 5938
from PVLF coil using a DVOM check resistance of
PVLF coil.
• If: Less than 29 Ω.
– Then replace PVLF coil.
• If: 29 Ω.
– Then, with coil disconnected, disconnect wire
5941 from CA304-4 and check for 24 V between
PC304-4 and TP7 on the platform distribution
panel.
• If: 24 V.
– Then wire 5941, 5936, 5938, or the mast cable
red wire is shorted to battery positive repair/ re-
place.
• If: 0 V.
– Then replace Access 4.

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Event Code 447

Event Code 447 Event Code 448

Access 4 (Lifting Fork Option Only) SV1 Shorted. Access 4 Travel Alarm (ALM2) Driver Shorted.
Nothing disabled. Full traction and high speed raise disabled.
Step 1: Disconnect wires 29130 and 5937 from SV1 Step 1: Disconnect wire 5915 from CA304-7. Check
coil using a DVOM check resistance of SV1 coil. for 24 V between PC304-7 and TP7 on the platform
• If: Less than 29 Ω. distribution panel.
– Then replace SV1 coil. • If: 24 V.
• If: 29 Ω. – Then wire 5915 is shorted to battery positive re-
pair/ replace.
– Then, with coil disconnected, disconnect wire
5942 from CA304-5. Check for 24 V between • If: 0 V.
PC304-5 and TP7 on the platform distribution – Then replace Access 4.
panel.
• If: 24 V.
– Then wire 5942, 5935, 5937 or mast cable green
wire is shorted to battery positive repair/ replace.
• If: 0 V.
– Then replace Access 4.

Event Code 449

THRU

Event Code 452

Access 4 Internal Driver Shorted.
Event Code 449 and 452: Traction and raise disabled.
Event Code 450: Raise disabled.
Event Code 451: Nothing disabled.

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Event Code 453

Step 1: Replace Access 4.

Event Code 453

Access 4 Chain Break.
Hydraulics disabled.
Step 1: Check lift chain.
• If: Correct.
– Then proceed to Step 2.
• If: Broken.
– Then replace as necessary.
Step 2: Check chain break switch wiring.
• If: Correct.
– Then check wire 29123, CA303-3 to CA331 and
wire 29124, CA331 to CA103-14 and wiring har-
ness between harness and switches. Using a
DVOM, check for 24 V between CA303-3 and
TP7 on platform distribution panel.
• If: 24 V.
– Then replace Access 4.
• If: 0 V.
– Then check terminal conditions.

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Event Code 460

Event Code 460 – Then repair or replace wiring as necessary.

THRU

Event Code 462

Access 5 CAN Error.
Event Code 460: Access 5 receiving packets too fast.
Event Code 461: Access 5 receiving short packets.
Event Code 462: Access 5 receiving long packets.
No action taken.
Step 1: Verify that correct ACCESSES are in place
on the lift truck.
• If: Any new ACCESSES have recently been in-
stalled.
– Then check connections and software.
Step 2: Determine if logged event code is associated
with specific lift truck functions.
• If: Event code is logged when a specific function is
started or stopped.
– Then check the functions load and suppression
(for example, if event code is logging when ED1
contactor opens or closes check ED1 contactor
coil and suppression).
Step 3: Check CAN communication lines. Turn off
the lift truck. Using a DVOM, measure the resistance
between CAN_H and CAN_L on either the power unit
or platform distribution panels, resistance is 60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Locate short circuit and repair. A short exists in
an ACCESS. Determine this condition by discon-
necting ACCESS from the CAN bus one at a time
and measure resistance between CAN_H and
CAN_L.
• If: Greater than 65 Ω with all connectors connected.
– Then a CAN bus-terminating resistor is open,
damaged, or wiring to terminating resistor is
open. CAN bus contains two terminating resis-
tors, one located in Access 5 and the other in
Access 1.
Step 4: Check for CAN line short to battery negative,
battery positive, and the lift truck frame. Turn off the lift
truck and disconnect battery. Using a DVOM, check the
resistance at the power unit distribution panel CAN_L
to battery negative bus bar then CAN_L to TP3 on the
platform distribution panel and CAN_L to the lift truck
frame. Resistance is greater than 10,000 Ω.
• If: Less than 10,000 Ω.

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Event Code 463

Event Code 463

THRU

Event Code 465

Access 6 CAN Error.
Event Code 463: Access 6 receiving packets too fast.
Event Code 464: Access 6 receiving short packets.
Event Code 465: Access 6 receiving long packets.
No action taken.
Step 1: Verify that correct ACCESSES are in place
on the lift truck.
• If: Any new ACCESS has recently been installed.
– Then check connections and software.
Step 2: Determine if logged event code is associated
with specific lift truck functions.
• If: Event code is logged when a specific function is
started or stopped.
– Then check the functions load and suppression
(for example, if event code is logging when ED1
contactor opens or closes check ED1 contactor
coil and suppression).
Step 3: Check CAN communication lines. Turn off
the lift truck. Using a DVOM, measure the resistance
between CAN_H and CAN_L on either the power unit
or platform distribution panels. Resistance is 60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Locate short circuit and repair. A short exists in
an ACCESS. Determine this condition by discon-
necting the ACCESS from the CAN bus one at a
time and measure resistance between CAN_H
and CAN_L.
• If: Greater than 65 Ω with all connectors connected.
– Then a CAN bus-terminating resistor is open,
damaged, or wiring to terminating resistor is
open. CAN bus contains two terminating resis-
tors, one located in Access 5 and the other in
Access 1.
Step 4: Check for CAN line short to battery negative,
battery positive, and the lift truck frame. Turn off the lift
truck and disconnect battery. Using a DVOM, check the
resistance at the power unit distribution panel CAN_L
to battery negative bus bar then CAN_L to TP3 on the
platform distribution panel and CAN_L to the lift truck
frame. Resistance is greater than 10,000 Ω.
• If: Less than 10,000 Ω.
– Then repair or replace wiring as necessary.

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Event Code 466

Event Code 466 – Then repair or replace wiring as necessary.

THRU

Event Code 469

Access 1 CAN Error.
Event Code 466: Access 1 receiving packets too fast.
Event Code 467: Access 1 receiving short packets.
Event Code 468: Access 1 receiving long packets.
Event Code 469: Access 1 receiving duplicate ID.
No action taken.
Step 1: Verify that correct ACCESSES are in place
on the lift truck.
• If: Any new ACCESS has recently been installed.
– Then check connections and software.
Step 2: Determine if logged event code is associated
with specific lift truck functions.
• If: Event code is logged when a specific function is
started or stopped.
– Then check the functions load and suppression
(for example if event code is logging when ED1
contactor opens or closes check ED1 contactor
coil and suppression).
Step 3: Check CAN communication lines. Turn off
the lift truck. Using a DVOM, measure the resistance
between CAN_H and CAN_L on either the power unit
or platform distribution panels. Resistance is 60 Ω.
• If: 0 Ω.
– Then short exists between CAN_H and CAN_L.
Locate short circuit and repair. A short exists in
an ACCESS. Determine this condition by discon-
necting ACCESS from the CAN bus one at a time
and measure resistance between CAN_H and
CAN_L.
• If: Greater than 65 Ω with all connectors connected.
– Then a CAN bus-terminating resistor is open,
damaged, or wiring to terminating resistor is
open. CAN bus contains two terminating resis-
tors, one located in Access 5 and the other in
Access 1.
Step 4: Check for CAN line short to battery negative,
battery positive, and the lift truck frame. Turn off the lift
truck and disconnect battery. Using a DVOM, check the
resistance at the power unit distribution panel CAN_L
to battery negative bus bar then CAN_L to TP3 on the
platform distribution panel and CAN_L to the lift truck
frame. Resistance is greater than 10,000 Ω.
• If: Less than 10,000 Ω.

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Event Code 470

Event Code 470 – Then repair or replace wiring as necessary.

THRU

Event Code 473

Access 4 CAN Error.
Event Code 470: Access 4 receiving packets too fast.
Event Code 471: Access 4 receiving short packets.
Event Code 472: Access 4 receiving long packets.
Event Code 473: Access 4 receiving duplicate ID.
No action taken.
Step 1: Verify that correct ACCESSES are in place
on the lift truck.
• If: Any new ACCESS has recently been installed.
– Then check connections and software.
Step 2: Determine if logged event code is associated
with specific lift truck functions.
• If: Event code is logged when a specific function is
started or stopped.
– Then check the functions load and suppression
(for example, if event code is logging when ED1
contactor opens or closes check ED1 contactor
coil and suppression).
Step 3: Check CAN communication lines. Turn off Event Code 501
the lift truck. Using a DVOM, measure the resistance
between CAN_H and CAN_L on either the power unit Access 5 Communication (CAN) with Access 1
or platform distribution panels. Resistance is 60 Ω. Timeout.
• If: 0 Ω. Traction and hydraulics disabled.
– Then short exists between CAN_H and CAN_L. Note 1: Intermittent disruption of CAN communication
Locate short circuit and repair. A short exists in between Access 5 and Access 1 logs event code 501
an ACCESS). Determine this condition by dis- (Access 5 flashes event code 501). Access 1 must
connecting the ACCESS from the CAN bus one receive event code 501 from Access 5 to illuminate the
at a time and measure resistance between service required indicator (wrench shaped light).
CAN_H and CAN_L. Illumination of the indicator shows communication
between Access 5 and Access 1 has been
• If: Greater than 65 Ω with all connectors connected.
intermittently disrupted.
– Then a CAN bus-terminating resistor is open,
Note 2: Complete loss of CAN communication
damaged, or wiring to terminating resistor is
between Access 5 and Access 1 after power-up and
open. CAN bus contains two terminating resis-
initialization logs event code 501. Access 5 flashes
tors, one located in Access 5 and the other in
event code 501. If this condition exists, CAN
Access 1.
communication between Access 5 and Access 1 is
Step 4: Check for CAN line short to battery negative, disabled, Access 1 will not log event code 501, and the
battery positive, and the lift truck frame. Turn off the lift service indicator will not illuminate.
truck and disconnect battery. Using a DVOM, check the
resistance at the power unit distribution panel CAN_L
to battery negative bus bar then CAN_L to TP3 on the
platform distribution panel and CAN_L to the lift truck
frame. Resistance is greater than 10,000 Ω.
• If: Less than 10,000 Ω.

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Event Code 501

Step 1: Determine which ACCESS is indicating the

event.
• If: Access 1 displays the wrench and event code
501 is logged.
– Then proceed to Step 2.
• If: Access 1 has no wrench. Traction, hydraulics,
and steering are disabled and Access 5 is flashing
event code 501.
– Then proceed to Step 3.
Step 2: Intermittent communication event has oc-
curred between Access 1 and Access 5. Check for
more event codes.
• If: Event codes 301 or 401 are logged.
– Then disconnect plug CA302 and, using a
DVOM, check for 24 V between wire 513
CA302-4 and wire 2941 CA302-3 on the plug.
• If: 24 V.
– Then check CAN wiring between Access 1 and
platform distribution panel. Wire 003 between
CA302-8 and CA105-2 also wire 004 between
CA302-9 and CA105-8.
• If: Event codes 305, 405 have been logged.
– Then check CAN bus wiring between power unit
distribution panel and Access 5. Wire 019
CA402-4 to CA204-2 and wire 020 CA402-5 to
CA204-8.
Step 3: Communication lost between Access 1 and
Access 5. Access 5 is flashing 501 event code. Turn off
the lift truck. Then turn on the lift truck.
• If: Access 1 does not turn on.
– Then using a DVOM check for 24 V between wire
2941 CA103-10 and wire 513 CA107-8.
• If: 0 V.
– Then check wiring and connections. Wire 2941
CA302-3 to CA103-10 and wire 513 CA302-4 to
CA107-8.
• If: 24 V and Access 1 does not turn on.
– Then replace Access 1.
• If: Access 1 turns on wrench illuminated and logs
event codes 305 and 405.
– Then issue exists in CAN wiring between power
unit distribution panel and Access 5. Check wire
019 CA402-4 to CA204-2 and wire 020 CA402-5
to CA204-8.

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Event Code 503

Event Code 503

Access 5 Communication (CAN) with Access 3™
Timeout.
Traction and hydraulics disabled.
Step 1: Check power to Access 3™.
• If: Access 3™ lights are on.
– Then issue exists in wiring between power unit
distribution panel and Access 3™, check wiring
and connections. Wire 018 CA401-15 to
CA204-7 and wire 017 CA401-23 to CA204-1.
• If: Wiring is correct.
– Then clean connections.
• If: Access 3™lights are off.
– Then issue exists in the power wiring between
power unit distribution panel and Access 3™. Us-
ing a DVOM check for 24 V between CA401-1
and Access 3™ battery negative.
• If: 24 V.
– Then replace Access 3™.
• If: 0 V.
– Then issue exists in wiring between Access 3™
and power unit distribution panel check wiring
and connections. Wire 2953 CA401-1 to
CA201-5.

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Event Code 504

Event Code 504 Note: If a reset occurs, the lift truck restores
functionality without any changes in performance.
Access 5 Communication (CAN) with Access 4 There is no need for service intervention with
Timeout. occasional occurrences. However if this event
All functions disabled. becomes an issue, then follow Step 1 below.
Step 1: Check power to Access 4. Step 1: Check CAN connections between Access 5
and power unit distribution panel. Wire 019 CA402-4 to
• If: Access 4 lights are on.
CA204-2 and wire 020 CA402-5 to CA204-8.
– Then issue exists in wiring between platform dis-
• If: Wiring is correct.
tribution panel and Access 4, check wiring and
connections. Wire 001 CA303-7 to CA105-1 and – Then clean connections.
wire 002 CA303-8 to CA105-7.
• If: Wiring is correct.
– Then clean connections.
• If: Access 4 lights are off.
– Then issue exists in power wiring between plat-
form distribution panel and Access 4, check wir-
ing and connections. Using a DVOM check for
24 V between CA304-1 and battery negative.
• If: 24 V.
– Then replace Access 4.
• If: 0 V.
– Then issue exists in wiring between Access 4
and platform distribution panel check wiring and
connections. Wire 2937 CA304-1 to CA103-12
and wire 525 CA304-3 to CA107-9.

Event Code 505

Access 5 CAN Reset.
No action taken.

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Event Code 506

Event Code 506

Access 5 / Access 6 CAN Error.
All functions disabled.
Step 1: Check power to Access 6.
• If: Access 6 lights are on.
– Then issue exists in wiring between platform dis-
tribution panel and Access 6, check wiring and
connections. Wire 021 CA601-4 to CA204-3 and
wire 022 CA601-5 to CA204-9.
• If: Wiring is correct.
– Then clean connections.
• If: Access 6 lights are off.
– Then issue exists in power wiring between plat-
form distribution panel and Access 6, check wir-
ing and connections. Using a DVOM check for
24 V between CA601-1 and CA601-2.
• If: 24 V.
– Then replace Access 6.
• If: 0 V.
– Then issue exists in wiring between Access 6
and power unit distribution panel check wiring
and connections. Wire 2972 CA601-1 to
CA201-6 and wire 552 CA601-2 to battery nega-
tive.

Event Code 511

THRU

Event Code 512

Access 5 Internal Issues.
All functions disabled.
Step 1: Replace Access 5.

Event Code 513

THRU

Event Code 514

Access 5 Internal Issues.
No action taken.
Step 1: Replace Access 5.

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Event Code 515

Event Code 515

THRU

Event Code 521

Access 5 Internal Issues.
All functions disabled.
Step 1: Replace Access 5.

Event Code 522

THRU

Event Code 523

Access 5 +5 V Power Supply Out of Range.
Steering and traction disabled. PDS/Forks First (522).
Step 1: Using a DVOM, connect the negative lead to
battery negative on Access 5 and with the positive lead
check for +5 V at CA403-20 and CA403-21.
• If: 5 V (+/- 0.1 V) and event code continues. Event Code 526
– Then replace Access 5.
THRU
• If: Less than 5 V.
– Then remove wire 706 from CA403-20 and, using Event Code 527
a DVOM, check for +5 V between CA403-20 and
battery negative. Access 5 Brake battery positive Out of Range.
• If: 5 V (+/- 0.1 V). Event Code 526: Full traction disabled. This event code
– Then issue exists in ECR2 or wiring. Reconnect is logged when either inner or outer brake coil is above
wire 706 and proceed to Step 2. range.
• If: Less than 5 V. Event Code 527: Traction disabled. This event code is
logged when both inner and outer brake coils are below
– Then remove wire 704 from CA403-21 and, using range.
a DVOM, check for +5 V between CA403-21 and
battery negative. Step 1: Check status of event codes 540, 528, 529,
530, and 531, if any of these codes have been logged
Step 2: Unplug CA410 (ECR2) and, using a DVOM, resolve them before proceeding to 526 and 527.
check for +5 V between CA403-20 and Access 5 bat-
tery negative. • If: Only event codes 526 and 527 are constantly
logged.
• If: Less than 5 V.
– Then replace Access 5.
– Then issue exists in wiring between Access 5
CA403 and CA410. Check wire 706 between
CA410-4 and CA403 20 also wire 540 between
CA410-2 and CA403-12.
• If: 5 V.
– Then replace ECR2.

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Event Code 528

Event Code 528

Access 5 Inner Brake Coil Battery Positive Out of
Range.
Note: Check for event code 540 and condition of ED2
contacts also if any other event codes have been
logged relating to these areas resolve them before
continuing.
Inner Brake battery positive above range. Full traction
disabled.
Step 1: Check battery voltage.
• If: 36 V, 48 V, 80 V.
– Then install 24 V battery.

Event Code 529

Access 5 Inner Brake Coil Battery Positive Out of
Range.
Note: Check for event code 540 and condition of ED2
contacts also if any other event codes have been
logged relating to these areas resolve them before
continuing.
Inner Brake battery positive under range. Traction
disabled.
Step 1: Check FU6.
• If: FU6 in good condition.
– Then check condition of ED2 contacts. Event Code 530
• If: ED2 contacts in good condition. Access 5 Inner Brake Coil Battery Positive Out of
– Then check for 24 V between CA403-7 and bat- Range.
tery negative. Note: Check for event code 540 and condition of ED
• If: 24 V and event code continues. contacts also if any other event codes have been
– Then replace Access 5. logged relating to these areas resolve them before
continuing.
Inner Brake battery positive above range. Full traction
disabled.
Step 1: Check battery voltage.
• If: 36 V, 48 V, 80 V.
– Then install 24 V battery.

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Event Code 531

Event Code 531 Step 1: Check for 5 V between CA403-27 and bat-
tery negative.
Access 5 Inner Brake Coil Battery Positive Out of • If: 5 V (+/- 0.1 V).
Range. – Then monitor for event codes 540 and 541.
Note: Check for event code 540 and condition of ED • If: Not 5 V.
contacts also if any other event codes have been
logged relating to these areas resolve them before – Then disconnect wire 705 from CA403-27 and
continuing. check voltage between Access 5 and battery
negative.
Inner Brake battery positive under range - traction
disabled. • If: 5 V.
Step 1: Check FU5. – Then reconnect wire 705 to CA403-27 and pro-
ceed to Step 2.
• If: FU5 in good condition.
• If: Not 5 V.
– Then check condition of ED2 contacts.
– Then replace Access 5.
• If: ED2 contacts in good condition.
Step 2: Unplug CS1 from CA406 and check for 5 V
– Then check for 24 V between CA403-9 and bat-
between CA406-A and battery negative.
tery negative.
• If: Not 5 V.
• If: 24 V and event code continues.
– Then check wire connections between Access 5
– Then replace Access 5.
and CA406.
• If: 5 V.
– Then replace CS1.

Event Code 532

Access 5 +5 V Power Supply Voltage Out of Range.
No action taken.

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Event Code 533

Event Code 533 Event Code 534

Access 5 +5 V Power Supply Voltage Out of Range. THRU
No action taken.
Step 1: Check for 5 V between CA403-27 and bat- Event Code 535
tery negative. Access 5 Battery Current Out of Range.
• If: 5 V (+/- 0.1 V). Note: Check for event codes 532, 533, 536 and 537 if
– Then monitor for event codes 540 and 541. any of these event codes have been logged resolve
• If: Not 5 V. first.
– Then disconnect wire 705 from CA403-27 and All functions disabled.
check voltage between Access 5 and battery Step 1: Check wiring between Access 5 and CS1.
negative. • If: Wiring is correct.
• If: 5 V. – Then replace CS1.
– Then reconnect wire 705 to CA403-27 and pro-
ceed to Step 2.
• If: Not 5 V.
– Then replace Access 5.
Step 2: Unplug CS1 from CA406 and check for 5 V
between CA406-A and battery negative.
• If: Not 5 V.
– Then check wire connections between Access 5
and CA406.
• If: 5 V.
– Then replace CS1.

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Event Code 536

Event Code 536 – Then replace Access 5.

• If: Voltage is above or below 2.4V/2.6V.
Access 5 Battery Current Sensor Improperly In- – Then remove wire 104 from CA403-24 and check
stalled. for 2.4V/2.6V between wire 104 and battery neg-
Note: Check for event code 537 if logged resolve it ative.
first.
• If: Voltage is between 2.4V/2.6V.
No action taken.
– Then replace the Access 5.
Step 1: Enter Service Mode 2 and view CS1 sensor
• If: Voltage is above or below 2.4V/2.6V.
input. Command full traction then plugging while view-
ing CS1 values. – Then replace CS1.
• If: Values are negative during traction acceleration.
– Then check installation of CS1 to bus bar and wir-
ing between Access 5 and CS1.
• If: CS1 installation is correct and event continues.
– Then replace CS1.
• If: CS1 installation is incorrect.
– Then correct.

Event Code 538

THRU

Event Code 537

Access 5 Current Sensor 1 (CS1) Zero Reading Out
of Range.
Note: Check for event codes 532 and 533. If either
event has been logged, then resolve first.
No action taken.
Step 1: Step off the lift truck to allow ED2 contacts to
open, wait 2 min for ED2 bus to discharge then using a
DVOM check voltage between CA403-24 and battery
negative.
• If: Voltage is between 2.4V/2.6V and the event
code continues.

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Event Code 539

Event Code 539 Step 3: Turn on the lift truck and check ED contactor
operation.
Access 5 BDI Battery Voltage Out of Range. • If: Contactor pulls in (even for only a short time-1/3
Note: Check for event code 540. If logged, then second) and the ED coil wiring and contacts appear
resolve first. to be in good condition.
Event Code 538: Traction disabled. – Then proceed to Step 4.
Event Code 539: Full traction, auxiliary raise, auxiliary • If: Contactor does not pull in and the ED bus is not
lower, and raise disabled. connecting to Access 5.
Step 1: Check FU2. Replace if open. – Then follow the procedure of event 544.
Step 2: Check for 24 V between CA202-3 and Step 4: Turn off the lift truck and remove the power
CA206-5. cable from Access 5 battery positive terminal. Connect
• If: 24 V and event continues. DVOM between the battery positive cable and battery
negative on Access 5; turn on the lift truck and check
– Then check for 24 V between CA202-3 and
for 24 V.
CA403-25.
• If: 24 V with ED pulled in (about 1/3 second).
• If: 0 V.
– Then turn off the lift truck and reinstall Access 5
– Then check wiring between CA202-3 and
battery positive power cable. Connect DVOM be-
CA403-25.
tween ACCESS battery positive and battery neg-
ative turn on the lift truck and check for 24 V.
• If: Not 24 V or 24 V and event code 540 continues.
– Then replace Access 5.
• If: Not 24 V when ED is pulled-in.
– Then issue exists in ED contact wiring follow pro-
cedure for event 541.

Event Code 540

Access 5 Battery Voltage Out of Range.
Note: Access 5 monitors battery positive steer motor
input for correct battery voltage.
All functions disabled.
Step 1: Using a DVOM check the battery voltage.
• If: 24 V and battery is known to be good.
– Then proceed to Step 2.
• If: 12 V, 36 V or 48 V.
– Then install correct 24 V battery.
Step 2: Check the status of FU1 through FU9.
• If: Correct status and the event continues.
– Then proceed to Step 3.
• If: Any fuse is open.
– Then replace it.

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Event Code 541

Event Code 541 – Then Access 3™ ED2 switch is correct, replace

ED2 contactor.
Access 5 ED2 Contactor Failed to Energize. • If: 0 V.
All functions disabled. – Then remove wire 2967 from CA403-18 and
Step 1: Turn on the lift truck. Depress brake pedal to check for 24 V between wire 2967 and battery
energize ED2 contactor. negative.
• If: ED2 fails to energize. • If: 24 V.
– Then proceed to Step 2. – Then replace Access 5.
• If: ED2 energizes. • If: 0 V.
– Then, using a DVOM, check for 24 V between – Then check wiring between battery positive bat-
battery negative and battery positive on Access 5 tery terminal and CA403-18.
also between battery negative and CA403-7, Step 4: Turn off the lift truck. Remove wire 5920 from
CA403-9. ED2 coil. Using a DVOM, check resistance of ED2 coil.
• If: Greater than 24 V. • If: 0 Ω.
– Then turn off the lift truck and check for correct – Then remove wire 5920 from ED2 battery nega-
battery. tive coil terminal. Using a DVOM, check resis-
• If: Each test point is 24 V. tance of ED2 coil.
– Then clear event codes and turn on the lift truck. • If: 29 Ω.
• If: Event code continues. – Then reconnect wire 5920 and proceed to Step 5.
– Then replace Access 5. • If: Resistance is not correct.
• If: Each test point is less than 24 V. – Then replace ED2.
– Then turn off the lift truck. Remove CA403 and Step 5: Check resistance between ED2 battery posi-
battery positive cable from Access 5, using a tive coil connection and CA403-19.
DVOM check for shorts between CA403-7 (AC- • If: 0 Ω.
CESS pin) (typical 10,000) and battery negative
– Then proceed to Step 6.
terminal, CA403-9 (ACCESS pin) (typical
10,000) and battery negative terminal also be- • If: Not 0 Ω.
tween battery positive terminal and battery nega- – Then repair wiring between ED2 battery positive
tive terminal (typical 40,000). coil connection and CA403-19.
• If: Resistance is below value shown. Step 6: Enter Service Mode 2. Select ED2 test output
– Then replace Access 5. menu to activate Access 5 / Access 3™ ED2 switches.
Connect a DVOM between ED2 battery negative coil
• If: Resistance value is correct.
connection and battery negative. Check for 24 V with
– Then issue exists in ED2 load bus wiring. no active switches.
Step 2: Turn off the lift truck and check fuses FU1 • If: 0 V.
through FU9.
– Then remove wire 5920 from CA401-2 and check
• If: Fuses not functioning correctly. for 24 V.
– Then replace as necessary. • If: 24 V.
Step 3: Turn on the lift truck. Using a DVOM check – Then Access 3™ is shorted, replace Access 3™.
for 24 V between ED2 coil battery positive terminal and
• If: Not 24 V.
battery negative.
– Then Access 5 switch open, replace Access 5.
• If: 24 V.
• If: 20 V.
– Then ED2 coil supply is correct, proceed to Step
4. – Then activate Access 5 switch and check voltage
while holding Enter Button.
• If: 20 V.
• If: 20 V.
– Then Access 3™ switch is open, replace
Access 3™. – Then Access 5 is open, replace Access 5.
• If: 3 V. • If: 24 V.

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Event Code 542

– Then activate Access 3™ switch and check volt- Step 1: Turn off the lift truck and check fuses FU5,
age while holding Enter Button. FU6, and FU11.
• If: Less than 10 V. • If: Fuses are correct.
– Then Access 5 switch is shorted (ED will pull-in), – Then proceed to Step 2.
replace Access 5. • If: Fuses are open.
• If: 24 V. – Then replace as necessary.
– Then Access 3™ switch is open, replace Step 2: Check power supply wiring from TP5 to
Access 3™. CA403-7, CA403-9 and battery positive power termi-
Step 7: Activate Access 3™ ED2 switch and check nal.
voltage while holding Enter Button.

Event Code 544

Event Code 542 Access 5 ED2 Turn On Error.
All functions disabled.
Access 5 Battery Positive Power Supply Not Pres-
ent. Step 1: Follow procedure for event code 541, ED2
system troubleshooting.
All functions disabled.

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Event Code 545

Event Code 545 • If: CHS3/CHS4 resistance is correct and event

code continues.
Access 5 ED2 Turn Off Error. – Then check CHS3/CH4 wiring. Access 3™
All functions disabled. CA401-11 wire 2973 to CA414-1, CA201-7 wire
Step 1: Follow procedure for event code 541, ED2 2954 to CA415-1, CA401-20 wire 2974 to
system troubleshooting. CA416-1, CA201-8 wire 2955 to CA417-1.

Event Code 546

THRU

Event Code 548

Access 3™ ED Load Bus Pre-charge Error.
All functions disabled.
Event Code 546: General ED pre-charge error.
Event Code 547: Access 3™ pre-charge power out of
range.
Event Code 548: Access 3™ pre-charge error.
Step 1: Using a DVOM, check resistance from ED
bus (output contact) to battery negative.
• If: Less than 25 Ω.
– Then remove bus load fuses one at a time until
the resistance increases to normal value of
1000 Ω.
• If: ED bus resistance returns to normal.
– Then note last fuse removed and replace all oth-
ers to verify that bus resistance remains the
same.

Event Code 549

Access 3™ Chain Slack.
Traction and lower disabled.
Note: Prevents issues logging check lift chain
adjustments.
Step 1: Enter Service Mode 2 and select CHS3/
CHS4. Event Code 551
• If: Switch shows closed.
Access 5 Parameter Error.
– Then status is normal, event code has occurred
No action taken.
due chain adjustments.
Step 1: Turn off the lift truck. Then turn on the lift
• If: Switch shows open.
truck.
– Then check chain adjustment (see Platform in
• If: Event code clears.
Service and Parts Manual).
– Then the lift truck is operation ready.
• If: Chain adjustment is correct and event code con-
tinues. • If: Event code continues.
– Then check CHS3/CHS4 adjustment. – Then replace Access 5.
• If: If: CHS3/CHS4 adjustment is correct.
– Then check CHS3/CHS4 resistance is 0 Ω.

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Event Code 552

Event Code 552 CA410-3, blue wire between CA410 and ECR2,
orange wire between CA410 and ECR2.
THRU • If: Wiring is correct and event code continues.
– Then replace ECR2.
Event Code 553 • If: ECR2 is correct and event code continues.
Access 5 Parameter Error. – Then replace Access 5.
No action taken. • If: ECR2 counts change smoothly but count does
Step 1: Load default parameters and configure as re- not match wheel position.
quired. – Then perform ECR2 alignment.

Event Code 554

Access 5 EAC Parameter Error.
No action taken.
Step 1: Drive the lift truck over EAC magnets to reset
data.
• If: Event code clears.
– Then the lift truck is operation ready.
• If: Event code continues.
– Then replace Access 5.

Event Code 555

THRU

Event Code 556

Access 5 Encoder 2 (ECR2) Out of Range.
Traction disabled.
Note: Check status of event codes 522 and 523 if
logged then resolve them before proceeding to 555
and 556.
Step 1: Using a DVOM check for +5 V between
CA410-2 and CA410-4.
• If: Less than 4.75 V or more than 5.25 V.
– Then follow procedures for event codes 522 and
523.
• If: 5 V.
– Then proceed to Step 2.
Step 2: Check steering wheel synchronization, enter
Service Mode 2 and select Analyzer menu to view en-
coder counts. Rotate tiller knob in both directions while
viewing counts, ECR2 counts change smoothly and
continuously as steering wheel moves. Record ECR2
counts once steering wheel is at zero position.
• If: ECR2 counts erratic change or no change.
– Then check wiring, wire 025 between CA403-13
and CA410-1, wire 026 between CA403-14 and

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Event Code 557

Event Code 557

Access 5 Encoder 2 (ECR2) Index Error.
Full traction disabled.
Note 1: ECR2 count indicates that the wheel has
passed through zero position, but index signal has not
indicated the same.
Note 2: Check status of event codes 522 and 523 if
logged resolve them before proceeding to event code
557.
Step 1: Using a DVOM check for +5 V between
CA410-2 and CA410-4.
• If: Less than 4.75 V or more than 5.25 V.
– Then follow procedures for event codes 522 and
523.
• If: 5 V.
– Then proceed to Step 2.
Step 2: Check ECR2 index wiring, wire 027 between
CA403-23 and CA410-5 and yellow wire between
ECR2 and CA410.
• If: Wiring is correct.
– Then check steering wheel synchronization, en-
ter Service Mode 2 and select Analyzer menu
view encoder counts. Rotate tiller knob in both di-
rections while viewing counts, ECR2 counts
change smoothly and continuously as steering
wheel is at zero position.
• If: ECR2 counts erratic change or no change.
– Then check wiring, wire 025 between CA403-13
and CA410-1, wire 026 between CA403-14 and
CA410-3, blue wire between CA410 and ECR2
and orange wire between CA410 and ECR2.
• If: Wiring is correct and event code continues.
– Then replace ECR2.
• If: ECR2 is correct and event code continues.
– Then replace Access 5.
• If: ECR2 counts change smoothly but count does
not match wheel position.
– Then perform ECR2 alignment.

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Event Code 558

Event Code 558

THRU

Event Code 561

Access 5 Encoder 2 (ECR2) Error.
Traction and steering disabled.
Note 1: Event occurs if there is no wheel movement
upon command.
Note 2: Check status of event codes 522 and 523 if
logged resolve them before proceeding to 558, 559,
560 and 561.
Step 1: Using a DVOM, check for +5 V between
CA410-2 and CA410-4.
• If: Less than 4.75 V or more than 5.25 V.
– Then follow procedures for event codes 522 and
523.
• If: 5 V.
– Then proceed to Step 3.
Step 2: Check wire connections between Access 5
A1 and A2 terminal and M3.
• If: Wiring is correct.
– Then proceed to Step 3.
Step 3: Check steering wheel synchronization, enter
Service Mode 2 and select Analyzer menu view en-
coder counts. Rotate tiller knob in both directions while
viewing counts, ECR2 counts change smoothly and
continuously as steering wheel moves. Record ECR2
counts once steering wheel is at zero position.
• If: ECR2 count change is erratic or not at all.
– Then check wiring, wire 025 between CA403-13
and CA410-1, wire 026 between CA403-14 and
CA410-3, blue wire between CA410 and ECR2
and orange wire between CA410 and ECR2.
• If: Wiring is correct and event code continues.
– Then replace ECR2.
• If: ECR2 is correct and event code continues.
– Then replace Access 5.
• If: ECR2 counts change smoothly but count does
not match wheel position.
– Then perform ECR2 Alignment.

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Event Code 562

Event Code 562 • If: Feature is not installed.

– Then access the Features menu and turn off
Access 5 Steering Error. guidance.
Traction and steering disabled. • If: Event continues.
Note: Check status of event codes 540, 524 and 525 if – Then see the event code 506.
logged resolve them before proceeding to 562.
Step 1: Turn off the lift truck and unplug battery, re- Event Code 564
move battery positive and battery negative cables from
Access 5. Install a jumper between battery positive and Access 5 Wire Guidance Enable Error.
battery negative using a DVOM check the following: Traction disabled.
Terminal A1 to battery positive = 15,000 Ω. Note: Access 5 received a wire guidance command
Terminal A1 to battery negative = 15,000 Ω. from the guidance switch but wire enable setup is not
Terminal A2 to battery positive = 15,000 Ω. active.
Terminal A2 to battery negative = 15,000 Ω.
Step 1: ACCESS Features menu and turn on wire
Terminal A1 to A2 = 30,000 Ω.
guidance.
• If: Any are 5000 Ω below the value shown.
– Then replace Access 5.
• If: Readings are correct.
– Then reconnect cables and check A1 and A2 ca-
bles for a short.
• If: Cables are correct and the event continues.
– Then replace Access 5.

Event Code 563

Access 5 / Access 6 Communication Error.
Traction disabled.
Note: Access 5 has received a wire guidance
command from the guidance switch but has not
received communication from Access 6.
Step 1: Verify that the lift truck has guidance feature.
• If: Feature is installed.
– Then check access wiring.

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Event Code 565

Event Code 565

Access 5 / Access 3™ Traction Encoder 3 (ECR3)
Error.
Traction disabled. One or both channels lost at
Access 5 in idle or traveling.
Note: Check status of event codes 330 and 565 (both
pertain to ECR3). If logged, then resolve them before
proceeding with 565.
Step 1: Clear event history; turn off the lift truck; turn
on the lift truck and request traction.
• If: Event 565 is logged.
– Then check wiring between FSB CA408 and
Access 5 CA403.
• If: Wiring is correct.
– Then replace FSB.
• If: Event continues.
– Then replace Access 5.
• If: Event 330 is logged.
– Then check wiring between FSB CA408 and
Access 3™ CA401.
• If: Wiring is correct.
– Then replace FSB.
• If: Event continues. Event Code 566
– Then replace Access 3™.
Access 5 EAC Enable Error.
Full traction disabled.
Note: EAC feature enabled, hardware not detected.
Step 1: Verify that the lift truck has EAC feature.
• If: The lift truck does not have EAC feature.
– Then enter Features menu and disable EAC.
• If: The lift truck has EAC feature.
– Then check for event code 105 if logged check
connections to Access 6.
• If: Connections are correct.
– Then check for event code 506 if logged see the
procedures for event code 506.

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Event Code 567

Event Code 567

Access 5 EAC Sensor Latched On Error.
Full traction disabled.
Note 1: EAC sensor event code ID: 1A.
Note 2: Check status of event codes 625 and 626. If
logged, then resolve before proceeding to 567, 568,
569 or 570.
Note 3: To perform test position the lift truck away from
EAC magnets.
Step 1: Using a DVOM check for 5 V between
Access 6 CA602-5 wire 052 and battery negative.
• If: 0 V.
– Then check for a test voltage between Access 6
CA602-3 wire 901 and battery negative.
• If: Greater than 1 V.
– Then replace Access 6.
• If: 0 V.
– Then remove wire 052 from EAC distribution
panel CA607-3, check for 5 V between wire end
and battery negative.
• If: 5 V.
– Then replace EAC distribution panel.
• If: 0 V.
– Then remove wire 052 from EAC Access 6
CA602-5, check for 5 V between CA602-5 and
battery negative.
• If: 0 V.
– Then replace Access 6.
• If: 5 V.
– Then check wiring between Access 6 CA602-5
wire 052 and EAC distribution panel CA607-3.

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Event Code 568

Event Code 568

Access 5 EAC Sensor Latched On Error.
Full traction disabled.
Note 1: EAC sensor event code ID: 1B.
Note 2: Check status of event codes 625 and 626. If
logged, then resolve before proceeding to 567, 568,
569 or 570.
Note 3: To perform test position the lift truck away from
EAC magnets.
Step 1: Using a DVOM check for 5 V between
Access 6 CA602-11 wire 054 and battery negative.
• If: 0 V.
– Then check for a test voltage between Access 6
CA602-9 wire 903 and battery negative.
• If: Greater than 1 V.
– Then replace Access 6.
• If: 0 V.
– Then remove wire 054 from EAC distribution
panel CA607-9, check for 5 V between wire end
and battery negative.
• If: 5 V.
– Then replace EAC distribution panel.
• If: 0 V.
– Then remove wire 054 from EAC Access 6
CA602-11, check for 5 V between CA602-11 and
battery negative.
• If: 0 V.
– Then replace Access 6.
• If: 5 V.
– Then check wiring between Access 6 CA602-11
wire 054 and EAC distribution panel CA607-9.

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Event Code 569

Event Code 569

Access 5 EAC Sensor Latched On Error.
Full traction disabled.
Note 1: EAC sensor event code ID: 2A.
Note 2: Check status of event codes 625 and 626. If
logged, then resolve before proceeding to 567, 568,
569 or 570.
Note 3: To perform test position the lift truck away from
EAC magnets.
Step 1: Using a DVOM check for 5 V between
Access 6 CA602-8 wire 053 and battery negative.
• If: 0 V.
– Then check for a test voltage between Access 6
CA602-6 wire 902 and battery negative.
• If: Greater than 1 V.
– Then replace Access 6.
• If: 0 V.
– Then remove wire 053 from EAC distribution
panel CA607-6, check for 5 V between wire end
and battery negative.
• If: 5 V.
– Then replace EAC distribution panel.
• If: 0 V.
– Then remove wire 053 from EAC Access 6
CA602-8, check for 5 V between CA602-8 and
battery negative.
• If: 0 V.
– Then replace Access 6.
• If: 5 V.
– Then check wiring between Access 6 CA602-8
wire 053 and EAC distribution panel CA607-6.

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Event Code 570

Event Code 570

Access 5 EAC Sensor Latched On Error.
Full traction Disabled.
Note 1: EAC sensor event code ID: 2B.
Note 2: Check status of event codes 625 and 626. If
logged, then resolve before proceeding to 567, 568,
569 or 570.
Note 3: To perform test position the lift truck away from
EAC magnets.
Step 1: Using a DVOM check for 5 V between
Access 6 CA602-14 wire 055 and battery negative.
• If: 0 V.
– Then check for a test voltage between Access 6
CA602-12 wire 904 and battery negative.
• If: Greater than 1 V.
– Then replace Access 6.
• If: 0 V.
– Then remove wire 055 from EAC distribution
panel CA607-12, check for 5 V between wire end
and battery negative.
• If: 5 V.
– Then replace EAC distribution panel.
• If: 0 V.
– Then remove wire 055 from EAC Access 6
CA602-14, check for 5 V between CA602-14 and
battery negative.
• If: 0 V.
– Then replace Access 6.
• If: 5 V.
– Then check wiring between Access 6 CA602-14
wire 055 and EAC distribution panel CA607-12.

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Event Code 571

Event Code 571 Event Code 573

THRU THRU

Event Code 572 Event Code 574

Access 5 EAC Magnet Error. Access 4 Height Encoder 4 (ECR4) or Encoder 6
Full traction disabled. (ECR6) Count Error.
Event Code 571: Inner magnet error event code. Full traction and raise 2 disabled.
Event Code 572: Outer magnet error event code. Event Code 573: Event code will log if the platform fails
to lower within an allotted time after operator
Step 1: Drive the lift truck out of guided aisle then re-
command. This event occurs during a lower command
enter.
and chain slack condition.
• If: Event clears.
Event Code 574: Event code will log if the platform fails
– Then monitor. to raise within an allotted time after operator command.
• If: Event repeats. Step 1: Disconnect CA317, check encoder side wir-
– Then proceed to Step 2. ing. Make sure that there are not broken crimps on the
Step 2: Enter Service Mode 2 and select View EAC encoder wiring into connector.
Sensor Status in EAC monitor menu A2.5.4 and • If: Wiring crimp broken or damaged.
A2.5.5. Acquire wire or rail position the lift truck in EAC – Then replace ECR4.
zone, display state of corresponding sensors. Slowly
Step 2: Disconnect CA317, using a DVOM check for
drive over EAC magnets while viewing sensor state on
5 V between CA317-3 and CA317-4.
display. State is closed if not detected, open if detected.
• If: 5 V.
• If: Any magnet fails detection.
– Then reconnect CA317 and proceed to Step 3.
– Then check wiring of corresponding sensor.
• If: Less than 5 V.
• If: Wiring is correct.
– Then remove wire 703 and 516 from CA303 and,
– Then perform the same test over another magnet
using a DVOM, check for 5 V between pins
in the aisle.
CA303-12 and CA303-15.
• If: Test passes.
• If: 5 V.
– Then check the magnet in the floor. Using a piece
– Then check wiring. Wire 703 CA303-12 to
of metal, pass it over the magnet, the attraction is
CA317-3, wire 516 CA303-15 to CA317-4.
strong. Compare it to another magnet and if there
is a dramatic different in the magnetic attraction • If: Less than 5 V.
replace the magnet. – Then replace Access 4.
• If: All four magnets are detected. Step 3: Check ECR4 channel wiring. Wire 007
– Then proceed to Step 3. CA317-1 to CA303-13, wire 008 CA317-2 to
CA303-14.
Step 3: Rekey the lift truck in normal mode. Acquire
wire or rail and stop the lift truck outside the EAC • If: Wiring is correct and event code continues.
zones, remain idle with foot on brake. Wait 20 seconds – Then disconnect CA317, remove white and blue
for diagnostics to execute. wires from JC317-1 and JC317-2. Connect a
• If: Sensors fail. DVOM from white (CH A) to battery negative, turn
on the lift truck and check voltage. Reading is 0 V
– Then a 500 or 600 event code is logged. Follow
or 5 V depending on position of ECR4 disc. Per-
procedures for that event code.
form the same test on the blue wire (CH B).
• If: Time elapses and no event occurs.
• If: Not 0 V or 5 V.
– Then system is correct; continue to monitor.
– Then replace ECR4.
• If: 0 V or 5 V.
– Then reconnect wiring.
• If: 0 V or 5 V and event code continues.

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Event Code 576

– Then replace Access 4. • If: Not 0 V or 12 V.

– Then replace ECR6.
• If: 0 V or 12 V.
– Then reconnect wiring.
• If: 0 V or 12 V and event code continues.
– Then replace Access 3™.

Step 4: Disconnect CA421, check encoder side wir-

Event Code 576
ing. Make sure that there are not broken crimps on the THRU
encoder wiring into connector.
• If: Wiring crimp broken or damaged. Event Code 581
– Then replace ECR6.
Access 5 Brake Current or Resistance Error.
Step 5: Disconnect CA421, using a DVOM check for
Event Code 576: Traction disabled. Inner brake low
12 V between CA421-3 and CA421-4.
current.
• If: 12 V.
Event Code 577: Traction disabled. Inner brake hot.
– Then reconnect CA421 and proceed to Step 6.
Event Code 578: Full speed traction disabled only.
• If: Less than 12 V. Inner brake resistance high.
– Then remove wire 316 and 549 from CA401 and, Event Code 579: Traction disabled. Outer brake low
using a DVOM, check for 12 V between pins current.
CA401-3 and CA401-4.
Event Code 580: Traction disabled. Outer brake hot.
• If: 12 V.
Event Code 581: Full speed traction disabled only.
– Then check wiring. Wire 316 CA401-3 to Outer brake resistance high.
CA421-3, wire 549 CA401-4 to CA421-4.
Step 1: Allow brake assembly to cool then remove
• If: Less than 12 V. brake from traction motor and disassemble to the level
– Then replace Access 3™. that coils can be inspected.
Step 6: Check ECR6 channel wiring. Wire 014 Step 2: Inspect coils for heat damage.
CA421-1 to CA401-11, wire 013 CA421-2 to • If: Lamination material has broken down.
CA401-10.
– Then replace brake coils.
• If: Wiring is correct and event code continues.
• If: Coils do not appear to be damaged.
– Then disconnect CA421, remove white and blue
– Then, with coils at room temperature, use a
wires from JC421-1 and JC421-2. Connect a
DVOM and check resistance, typical resistance
DVOM from white (CH A) to battery negative, turn
of inner coil is 3.5 Ω outer coil 1.5 Ω.
on the lift truck and check voltage. Reading is 0 V
or 12 V depending on position of ECR6 disc. Per- • If: Either coil is significantly above value.
form the same test on the blue wire (CH B). – Then replace coil.

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Event Code 582

Event Code 582 Event Code 587

THRU Access 5 Brake Load Error.
Traction disabled.
Event Code 585 Note: Outer coil error.
Access 5 Brake Current Out of Range. Step 1: Turn off the lift truck and, using a DVOM,
Traction disabled. check resistance of outer coil. Unplug CA407 place
DVOM leads between CA407-1 and CA407-4 on the
Event Code 582 and 583: Inner brake resistance low. brake side typical resistance at room temperature is
Event Code 584 and 585: Outer brake resistance low. 1.5 Ω.
Step 1: Turn off the lift truck and, using a DVOM, • If: Resistance is less than 1.5 Ω.
check resistance of inner coil. Unplug CA407, place – Then replace outer brake coil.
DVOM leads between CA407-2 and CA407-3 on the
brake coil side, typical resistance at room temperature • If: Resistance is close to 1.5 Ω and event contin-
is 3.5 Ω. ues.
• If: Resistance is less than 3.5 Ω. – Then replace Access 5.
– Then replace inner brake coil.
• If: Resistance is close to 3.5 Ω and event contin-
ues.
– Then replace Access 5.

Event Code 586

Access 5 Brake Load Error.
Traction disabled.
Note: Inner coil error.
Step 1: Turn off the lift truck and, using a DVOM,
check resistance of inner coil. Unplug CA407, place
DVOM leads between CA407-2 and CA407-3 on the
brake coil side, typical resistance at room temperature
is 3.5 Ω.
• If: Resistance is close to 3.5 Ω and event contin-
ues.
– Then replace Access 5.

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Event Code 588

Event Code 588 Note 2: Fuse 5 circuit.

Step 1: Event code 589 check fuse 5.
Access 5 Brake Supply Voltage Error. • If: Open.
Traction disabled. – Then replace fuse 5.
Note 1: Brake power supply voltage error could result • If: Correct.
from a failure of ED2 contact close.
– Then using a DVOM check for 24 V between
Note 2: Fuse 6 circuit.
CA403-9 and battery negative.
Step 1: Check fuse 6.
• If: Less than 24 V.
• If: Open.
– Then check wiring. Wire 2902 CA206-4 to ED2
– Then replace fuse 6. contactor, wire 2957 CA202-1 to CA403-9.
• If: Correct.
– Then using a DVOM check for 24 V between
CA403-7 and battery negative.
• If: Less than 24 V.
– Then check wiring. Wire 2902 CA206-4 to ED2
contactor, wire 2956 CA202-2 to CA403-7.

Event Code 589

Access 5 Brake Supply Voltage Error.
Traction disabled.
Note 1: Brake power supply voltage error could result
from a failure of ED2 contact close.

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Event Code 590

Event Code 590 • If: 0 Ω.

– Then replace PVL.
THRU • If: 25–35 Ω.
– Then check wire 5926 CA403-2 to PVL coil, wire
Event Code 591 2958 CA403-11 to PVL coil, wire 2960 CA201-9
Access 5 Brake Driver Error. to PVL coil.
Steering and traction disabled.
Event Code 590: Inner brake driver error.
Event Code 591: Outer brake driver error.
Step 1: See the procedure for event 588 and 589.
Use event code that corresponds to the specific driver
(inner or outer brake coil).
Step 2: See the procedure for event 586 and 587.
Use event that code corresponds to the specific driver
(inner or outer brake coil).
• If: Results of Steps 1 and 2 do not indicate a brake
voltage error or shorted brake load.
– Then replace Access 5.

Event Code 592

THRU

Event Code 593

Access 5 Brake Driver Error.
Traction disabled.
Event Code 592: Inner brake driver error.
Event Code 593: Outer brake driver error.
Step 1: See the procedure for event 582, 583, 584,
585. Use event code that corresponds to the specific
driver (inner or outer brake coil).
• If: Results of Steps 1 and 2 do not indicate a brake
low resistance.
– Then replace Access 5.

Event Code 594

Access 5 Proportional Flow Valve (PVL) Load Er-
ror.
Hydraulics disabled.
Step 1: Turn off the lift truck and remove connector
CA403 from Access 5, using a DVOM check resistance
between wire 2958 and 5926.
• If: Resistance is 25–35 Ω.
– Then replace Access 5.
• If: Resistance is 0 Ω.
– Then disconnect wires from PVL coil and check
resistance at coil.

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Event Code 595

Event Code 595 • If: Wiring is correct and event code continues.
– Then replace Access 5.
Access 5 Proportional Flow Valve (PVL) Driver Er-
ror.
Raise disabled.
Step 1: Enter Service Mode 2 and select PVL moni-
tor menu A3.4.10. Raise platform then lower the dis-
play indicates percentage of PVL (lower valve) duty
cycle.
• If: Display indicates a duty cycle but the platform
does not lower.
– Then check wiring. Wire 5926 CA403-2 to PVL
coil, wire 2958 CA403-11 to PVL coil and wire
2960 CA201-9 to PVL coil.
• If: Wiring is correct and event code continues.
– Then replace Access 5.

Event Code 596

Access 5 Proportional Flow Valve (PVL) Load Er-
ror.
Raise disabled.
Step 1: Turn off the lift truck and remove connector
CA403 from Access 5, using a DVOM check resistance
between wire CA403-11 and CA403-2.
• If: 25–35 Ω.
– Then check wire 5926 CA403-2 to PVL coil, wire
2958 CA403-11 to PVL coil, wire 2960 CA201-9
to PVL coil.

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Event Code 597

Event Code 597 – Then issue exists in CAN wiring between

Access 6 and power unit distribution panel.
Access 5 Proportional Flow Valve (PVL) Driver Er- Check connectors CA601, CA204, and wiring.
ror. Wire 021 CA601-4 to CA204-3 and wire 022
Hydraulics disabled. CA601-5 to CA204-9.
Note: Shorted driver event could be due to outside • If: Access 1 displays event code 601.
short, CA403-2 to battery negative or internal short in – Then check Access 1 power on light.
Access 5. • If: Access 1 power on light is illuminated.
Step 1: Turn on the lift truck and, using a DVOM, – Then issue exists in CAN wiring between
check for 24 V between wire 5926 at PVL coil and bat- Access 1 andCA105, andCA105 and wiring. Wire
tery negative. 003 CA302-8 to CA105-2 and wire 004 CA302-9
• If: Not 24 V. to CA105-8.
– Then remove wire 2958 from CA403-11, turn on • If: Access 1 power on light is off.
the lift truck using a DVOM check for 24 V be- – Then issue exists in wiring between platform dis-
tween wire 5926 and battery positive. tribution panel and Access 1. Check wire 2941
• If: 24 V. CA302-3 to CA103-10.
– Then replace Access 5.
• If: Not 24 V.
– Then check wiring. Wire 2960 PVL to CA201-9,
wire 2958 PVL to CA403-11.

Event Code 601

Access 6 CAN Error.
Traction disabled.
Step 1: Verify source of event code.
• If: Access 6 flashes code but is not displayed by
Access 1.

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Event Code 603

Event Code 603

Access 6 CAN Error.
Traction disabled.
Step 1: Verify source of event code.
• If: Access 6 flashes code but is not displayed by
Access 1.
– Then issue exists in CAN wiring between
Access 6 and power unit distribution panel.
Check connectors CA601, CA204, and wiring.
Wire 021 CA601-4 to CA204-3 and wire 022
CA601-5 to CA204-9.
• If: Access 1 displays event code 603.
– Then check Access 3™ power on light.
• If: Access 3™ power on light is illuminated.
– Then issue exists in CAN wiring between
Access 3™ and power unit distribution panel.
Check connectors CA401, CA204, and wiring.
Wire 017 CA401-23 to CA204-1 and wire 018
CA401-15 to CA204-7.
• If: Access 3™ power on light is off.
– Then issue exists in wiring between power unit
distribution panel and Access 3™. Check wire
2953 CA401-1 to CA201-5.

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Event Code 604

Event Code 604

Access 6 CAN Error.
Traction disabled.
Step 1: Verify source of event code.
• If: Access 6 flashes code but is not displayed by
Access 1.
– Then issue exists in CAN wiring between
Access 6 and power unit distribution panel.
Check connectors CA601, CA204, and wiring.
Wire 021 CA601-4 to CA204-3 and wire 022
CA601-5 to CA204-9.
• If: Access 1 displays event code 604.
– Then check Access 4 power on light.
• If: Access 4 power on light is illuminated.
– Then issue exists in CAN wiring between
Access 4 and platform distribution panel. Check
connectors CA303, CA105, and wiring. Wire 002
CA303-08 to CA105-7 and wire 001 CA303-07 to
CA105-1.
• If: Access 3™ power on light is off.
– Then issue exists in wiring between power unit
distribution panel and Access 4. Check wire 2937
CA304-1 to CA103-12.

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Event Code 605

Event Code 605

Access 6 CAN Error.
Traction disabled.
Step 1: Verify source of event code.
• If: Access 6 flashes code but is not displayed by
Access 1.
– Then issue exists in CAN wiring between
Access 6 and power unit distribution panel.
Check connectors CA601, CA204, and wiring.
Wire 021 CA601-4 to CA204-3 and wire 022
CA601-5 to CA204-9.
• If: Access 1 displays event code 605.
– Then check Access 5 power on light.
• If: Access 5 power on light is illuminated.
– Then issue exists in CAN wiring between
Access 5 and power unit distribution panel.
Check connectors CA402, CA204, and wiring.
Wire 019 CA402-4 to CA204-2 and wire 020
CA402-5 to CA204-8.
• If: Access 5 power on light is off.
– Then issue exists in wiring between power unit
distribution panel and Access 5. Check wire 2966
CA403-10 to CA201-6.

Event Code 611

THRU

Event Code 612

Access 6 Internal Error.
All functions disabled.
Step 1: Replace Access 6.

Event Code 621

THRU

Event Code 628

Access 6 Internal Error.
Traction disabled.
Step 1: Replace Access 6.

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Event Code 631

Event Code 631 – Then replace Access 6.

Access 6 Wire Guidance Sensor Amplifier Self-

Test Error.
Traction disabled.
Step 1: Replace Access 6.

Event Code 632

Access 6 Load Wheel Sensor Bar GS2 Guidance Is-
sue.
Traction disabled.
Note: Event code 632 will also log if wire guidance
feature is enabled and sensor bars are not present.
Step 1: Check sensor bar 5 V supply. Connect
DVOM positive lead to CA602-22 and negative to bat-
tery negative and turn on the lift truck.
• If: 5 V.
– Then sensor bar power supply is correct, pro-
ceed to Step 2.
• If: 0 V.
– Then remove wire 717 from CA602-15 (steering
wheel sensor bar GS1), check for 5 V between
CA602-22 and battery negative.
• If: 5 V.
– Then issue exists in GS1 bar or the wiring from
Access 6 to GS1. Repair or replace as neces-
sary.
• If: 0 V.
– Then remove wire 718 from CA602-22 (load
wheel sensor bar GS2), check for 5 V between
CA602-22 and battery negative at Access 6.
• If: 0 V.
– Then replace Access 6.
• If: 5 V.
– Then issue exists in GS2 or the wiring from
Access 6 to GS2. Repair or replace as neces-
sary.
Step 2: Enter Service Mode 2 and view GS2 sensor
values (A2.5.3) drive slowly over the wire, values in-
crease and decrease while traversing the wire.
• If: Any of the four coil signals fail to indicate the
presence of the wire.
– Then check the wiring corresponding to that coil
for a short or an open issue per the diagrams.
• If: Wiring is correct.
– Then replace GS2.
• If: Event code continues.

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Event Code 633

Event Code 633

Access 6 Steering Wheel Sensor Bar (GS1) Guid-
ance Error.
Traction disabled.
Note: Event code 633 will also log if wire guidance
feature is enabled and sensor bars are not present.
Step 1: Check sensor bar 5 V supply. Connect
DVOM positive lead to CA602-15 and negative to bat-
tery negative and turn on the lift truck.
• If: 5 V.
– Then sensor bar power supply is correct, pro-
ceed to Step 2.
• If: 0 V.
– Then remove wire 717 from CA602-15 (steering
wheel sensor bar GS1), check for 5 V between
CA602-22 and battery negative.
• If: 5 V.
– Then issue exists in GS1 or the wiring from
Access 6 to GS1. Repair or replace as neces-
sary.
• If: 0 V.
– Then remove wire 718 from CA602-22 (load
wheel sensor bar GS2), check for 5 V between
CA602-22 and battery negative at Access 6.
• If: 0 V.
– Then replace Access 6.
• If: 5 V.
– Then issue exists in GS2 or the wiring from
Access 6 to GS2. Repair or replace as neces-
sary.
Step 2: Enter Service Mode 2 and view the GS1 sen-
sor values (A2.5.1) driving slowly over the wire, values
increase and decrease while traversing the wire.
• If: Any one of the four coil signals fail to indicate the
presence of the wire.
– Then check the wiring corresponding to that coil
for a short or an open issue per the diagrams.
• If: Wiring is correct.
– Then replace GS1.
• If: Event code continues.
– Then replace Access 6.

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Event Code 636

Event Code 636

Access 6 Guide Angle Beyond Acceptable Angle.
Traction disabled.
Note 1: Event code 636 could log if the lift truck is
driven beyond end of wire in auto guide.
Step 1: Event code 636 is logged by driving beyond
the end of the wire in auto guide system operation is
correct.
• If: Event code 632/633 was also logged.
– Then follow procedures for these event codes
before continuing.
• If: Event code 636 was logged while in aisle.
– Then check alignment of ECR2, condition of sen-
sor bars and wire guidance calibration.
• If: ECR2 requires realignment.
– Then calibrate the lift truck.
• If: Event code was not due to alignment or calibra-
tion.
– Then using the Crown field strength meter (Part
Number 112953) check wire guide field strength
(6.25 kHz, 168 ma to 190 ma, 5.2 kHz 100 ma -
118 ma).
• If: Field strength is correct and event code contin-
ues.
– Then check floor surface.
Note 2: Floor surface irregularities, corrupted signal
due to rebar, metal pipes, underground electrical wiring
in metal or plastic conduit. Any of these issues can
affect wire guidance performance, which could be
localized (for example, section in one aisle) or wide
spread.

Event Code 637

Access 6 Wire Guidance Signal Loss at Both Sen-
sor Bars.
Traction Disabled.
Step 1: Check for event codes 632/633.
• If: Event code 632 or 633 has been logged.
– Then resolve these event codes before continu-
ing.
• If: Event code 632 or 633 has not been logged.
– Then check line driver power.
• If: Line driver correct.
– Then check guide wire condition breaks are pres-
ent.

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Event Code 638

Event Code 638

THRU

Event Code 639

Access 6 Loss of Wire Guidance Signal from One
Sensor Bar.
Traction disabled.
Step 1: Check for event codes 632/633.
• If: Event code 632 or 633 has been logged.
– Then resolve event code 632/633 before continu-
ing.
• If: Event code 638 (load wheel sensor bar GS2)
continues.
– Then check wiring. Wire 120 CA604-1 to
CA602-27, wire 119 CA604-2 to CA602-26, wire
118 CA604-7 to CA602-25 and wire 117
CA604-8 to CA602-24.
• If: Event code 639 (steering wheel sensor bar GS1)
continues.
– Then check wiring. Wire 116 CA603-1 to
CA602-20, wire 115 CA603-2 to CA602-19, wire
114 CA603-7 to CA602-18 and wire 113
CA603-8 to CA602-17.
• If: Event code 638 or 639 continues.
– Then replace corresponding sensor bar.
• If: Event code continues after replacement of sen-
sor bar.
– Then replace Access 6.

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Event Code 652

Event Code 652 Event Code 660: Sensor A1 digital signal error.
Event Code 661: Sensor B1 digital signal error.
THRU Event Code 662: Sensor A2 digital signal error.
Event Code 663: Sensor B2 digital signal error.
Event Code 659
Step 1: Enter Analyzer Mode select view EAC digital
Access 6 EAC Sensor Out of Range. signal state (A2.5.3 - A2.5.6). Digital state indicates
Full traction disabled. opened if the magnet is not sensed and closed if it is
sensed. Acquire the wire and slowly drive over the
Event Code 652 and 653: Sensor A1 over or under
magnet in the position of failed sensor while viewing
range.
sensor digital state.
Event Code 654 and 655: Sensor B1 over or under
• If: Digital state switches from opened to closed
range.
back to opened as sensor passes over the magnet.
Event Code 656 and 657: Sensor A2 over or under
– Then digital sense is working properly, enter But-
range.
ton Mode select view EAC signal level corre-
Event Code 658 and 659: Sensor B2 over or under sponding to event code.
range.
• If: Signal is close to 40%.
Step 1: Enter Analyzer Mode and select view EAC
– Then strength is close to lower range threshold,
signal levels (A2.5.3 - A2.5.6). The signal value dis-
check sensor wiring per diagram and inspect
played represents the signal strength in percentage of
magnet location and floor conditions around the
full scale for the activated sensor. Display will hold the
magnet.
peak sensed value until next magnet detection cycle
occurs. • If: Correct and event code continues.
Acquire wire and slowly drive over the magnet in the – Then replace EAC sensor that corresponds with
position of failed sensor while viewing sensor signal event code.
strength. Signal strengths tend towards the lower • If: Digital state shows opened and does not change
range value, rather than the upper. when sensor passes over the magnet.
• If: Signal is close to 100% and event continues. – Then check magnet is present and the sensor
– Then check sensor wiring per diagram. wiring is correct per the diagram.
• If: Wiring is correct. • If: Correct.
– Then replace EAC sensor that corresponds with – Then replace EAC sensor that corresponds with
event code. event code.
• If: Signal is close to 40%. • If: Event code continues.
– Then strength is close to lower range threshold. – Then replace Access 6.
Check sensor wiring per diagram and inspect
magnet location and floor conditions around the
magnet.
• If: Correct.
– Then replace EAC sensor that corresponds with
event code.
• If: Event code continues.
– Then replace Access 6.

Event Code 660

THRU

Event Code 663

Access 6 EAC Sensor Digital Signal Error.
Full traction disabled.

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ELECTRICAL SYSTEM
Event Code 664

Event Code 664 CA602 where the digital signal wire was re-
moved.
THRU • If: Less than 1 V.
– Then replace Access 6.
Event Code 667 • If: Greater than 3.5 V.
Access 6 EAC Magnet Field Strength Out of Range. – Then check voltage at the corresponding test sig-
Full traction disabled. nal at CA602.
Step 1: Check magnet locations for improper installa- • If: CA602 pin 0 V.
tion or damage (for example, wrong pole, positional – Then replace the corresponding EAC sensor.
alignment, floor crack through magnet, and so on). • If: If: CA602 pin greater than 5 V.
– Then replace Access 6.
Event Code 668
THRU

Event Code 671

Access 6 EAC Sensor Self-Test Error.
Full traction disabled.
Event Code 668: Sensor A1.
Event Code 669: Sensor B1.
Event Code 670: Sensor A2.
Event Code 671: Sensor B2.
Step 1: Check sensors wiring and connections as it
applies to event codes.
• If: Wiring or connections incorrect.
– Then repair as necessary.
• If: Wiring is correct and event code continues.
– Then replace EAC sensor that corresponds with
event code.
• If: Event code continues.
– Then replace Access 6.

Event Code 672

Access 6 Multiple EAC Sensors Active.
Full traction disabled.
Step 1: Check EAC sensors for damage.
• If: Sensors are damaged.
– Then repair or replace as necessary.
• If: Sensors are not damaged.
– Then move the lift truck away from EAC zone
where all sensors are inactive. Check digital sig-
nal voltage from CA602-5, -8, -11 and -14 to bat-
tery negative.
• If: Digital signal is less than 1 V.
– Then remove the corresponding digital signal
wire from CA602. Check the voltage at Access 6

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Event Code Introduction

Event Code Introduction Software

To make sure that the lift truck has the newest
Access 1 2 3® software, perform the following steps:
CAUTION
1. Turn on the lift truck.
If you connect the control connectors when the lift 2. Use Access 1 to enter Level 2: Field service mode.
truck is on, the lift truck could be damaged.
3. Push the up or down arrows to enter the Utilities
The truck electrical system could be damaged.
menu. This menu displays the control module and
• Do not turn the lift truck on with the control connec- software part numbers that are applicable to the lift
tors disconnected. truck.
• Do not remove or connect the control connectors
while the lift truck is on. No event code
If the lift truck malfunctions and no event code shows,
the malfunction is usually not electrical. If the lift truck
is on, but an event code does not show, the malfunction
CAUTION is usually mechanical or hydraulic, but not electrical.
When replacing a control module and doing an up- The mechanical and hydraulic data is in the applicable
date to the module software, make sure that the ad- section in this manual.
justments are correct.
Component locations
The lift truck will not operate correctly.
• Calibrate the lift truck. See the ELECTRICAL ► The component and wire location maps are at locations
Access 1 2 3® ► Calibration section. on the lift truck to help find the location of the compo-
nents. All components are clearly identified at the con-
nection points. See the COMPONENTRY section for
Troubleshooting steps more data on each component.
Most malfunctions occur in or at the output devices (re- Power cable connections
lays, contactors, and motors). The next components to
examine are connectors, wires, and input devices
(switches, potentiometers, and encoders). The last
components to examine are the control modules. Per- WARNING
form a test of the output devices, then the input de- A charged capacitor could be dangerous.
vices, and then the control module to which these de-
vices are attached. When measuring the voltage and Because of capacitance voltage in some control mod-
resistance of these components, use a digital volt-ohm ules, an injury or damage to the lift truck could occur.
multimeter (DVOM). Make sure that all components • When you do the lift truck maintenance around the
are connected after completing the event code steps. bus bars and related power cables, discharge the
capacitors.
Malfunctions
• See the SAFETY ► Control of Hazardous Energy
When a malfunction occurs, use Access 1 to go into ► Capacitance section for procedures to discharge
Level 2: Field service mode. the capacitors
Technician Tips: The monitor system has three user
levels:
Level 1: Operator mode
Level 2: Field service mode (full lift truck operation)
Level 3: Analyzer / test mode (no lift truck operation)
This section includes Level 2 and Level 3 data. For
Level 1 data, see the Operator Manual and the ELEC-
TRICAL SYSTEM / Access 1 2 3® section. For menu
data, see the ELECTRICAL SYSTEM / Access 1 2 3®
section.

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