Components Needed To Start

PEEC has 8 #5 Speed sensor

#1 POWER
++ Battery
#2 ECM #6 Shut-off solenoid
Battery
#3 P.M.
-- Battery
Battery #7 BTM
#4 Parameters
#8 Rack position sensor

Main
 Components Needed To Start

EUI has 6 #5 Speed/Timing sensor

#1 POWER
#2 ECM #6 Good Injectors
++ Battery
Battery
#3 P.M.
-- Battery
Battery
#4 Parameters

Main
 Components Needed To Start

HEUI has 7 #5 Speed/Timing sensor

#1 POWER
#2 ECM #6 Good Injectors
++ Battery
Battery
#3 P.M.
-- Battery
Battery #7 IAPCV
#4 Parameters

Main
 The Diagnostic Process

ƒ Gather information
– Driver Questionnaire
– Questionnaire response
– Performance effect of active diagnostic codes
– Check the repair history
– What happened, in what order

Main
 The Diagnostic Process

ƒ Verify operational problems

– Is the complaint due to misunderstanding of
parameters
– Is the complaint due to a change of parameters
– Is the engine performing as expected
– Is the problem repeatable

Main
 The Diagnostic Process

ƒ Determine probable causes

– Repair “ACTIVE” diagnostic codes first
– What subsystem could cause the problem
– What subsystem does the troubleshooting guide
suggest

Main
 The Diagnostic Process

ƒ Narrow the list of causes

– Use driver information
– Check “LOGGED” diagnostic codes
– Check “STATUS SCREENS”
– If more than one symptom, look for common
causes
– Avoid “PRE-CONCEIVED IDEAS”

Main
 The Diagnostic Process

ƒ Test subsystems
– Use procedure in manual
– Connector checks are extremely important
– Check every pin, socket, and wire

Main
 Troubleshooting Manual

ƒ Electronic system overview

ƒ Programming parameters
ƒ Troubleshooting without a diagnostic code
ƒ Troubleshooting with a diagnostic code
(functional tests)
ƒ Diagnostic code listing

Main
 Troubleshooting Manual

ƒ Electronic system overview

– Brief explanation of component operation
– Component diagrams
– Sensor and connector locations
– Engine and vehicle wiring harness diagrams
– Service tools

Main
 Troubleshooting Manual

ƒ Programming parameters
– Overview of parameters
– Customer and factory passwords
– Programming a new ECM
– Programming or changing a personality module
– How to use ECM information

Main
 Troubleshooting Manual

ƒ Troubleshooting without a diagnostic code

– Section designation
– General description of symptom
– Page number to begin troubleshooting procedure
ƒ Example:
– PA-19: Engine cranks, but will not start …. Page 65

Main
 Troubleshooting Manual

ƒ Troubleshooting with a diagnostic code

(functional tests)
– Section designation
– General description of subsystems and circuits
– Page number to begin troubleshooting procedure
ƒ Example:
– PC-31: Engine speed/timing circuit test …. Page 233

Main
 Troubleshooting Manual

ƒ Diagnostic code listing

– Diagnostic code
– Code description
– Flash code
– Page number to begin troubleshooting procedure
ƒ Example:
– 232-04: 5 volt supply below normal (21) …. Page 265

Main
 Troubleshooting Manual

ƒ Troubleshooting Without a diagnostic code

– Step by step elimination of all systems that could
cause symptom
ƒ Troubleshooting with a diagnostic code or
functional tests
– Beginning of section on a specific subsystem
– Begins with System operation overview
ƒ Diagnostic code listing
– Step 1 for that item

Main
 Engine Cranks, But Will
3406E
Not Start
ƒ Troubleshooting Without a diagnostic code
ƒ A-19 page 65
ƒ Probable root causes
– Connect an electronic service tool
– Will the ECM communicate
– Electrical connection to injectors
– Engine speed/timing signal
– Incorrect engine software
– Theft deterrent active

Main
 Engine Cranks, But Will
Not Start
Example 1

EUI has 6
#1 POWER #2 ECM #5 Speed/Timing sensor
++ Battery #3 P.M.
Battery #6 Good Injectors
#4 Parameters
-- Battery
Battery

Not an electronic problem

Main
 Engine Cranks, But Will
Not Start
Example 2

EUI has 6
#1 POWER #2 ECM #5 Speed/Timing sensor
++ Battery #3 P.M.
Battery #6 Good Injectors
#4 Parameters
-- Battery
Battery

No speed

Main
 Engine Cranks, But Will
Not Start
ƒ Find no speed or ……
ƒ Have code 190-02 loss of engine RPM signal
– Referred to page 233 or 234 (PC-31)
– Page 233 is systems operation
ƒ Read several steps to see where your going
Step 1 - Check all connectors, pins, and sockets
Step 2 - Check for active code
Step 3 - Connect service tool

Main
 Engine Cranks, But Will
Not Start
ƒƒ Step 4 – Install a 3 - pin breakout T at the harness side
of the sensor connector, J9 only
P9 J9

A
A A
A A
A
Speed
Speed timing
timing sensor
sensor B
B B
B B
B
C
C C
C C
C
ECM
ECM

A
A
B
B
C
C

Main
 Engine Cranks, But Will
Not Start
ƒƒ Step 4 – Measure voltage at J9 pin A, with reference to
J9 pin B
P9 J9

A
A A
A A
A
Speed
Speed timing
timing sensor
sensor B
B B
B B
B
C
C C
C C
C
ECM
ECM

A
A
B
B
C
C
+V
Com

Main
 Engine Cranks, But Will
Not Start
ƒƒ Step 4 – Is voltage between 11.5 and 13.5 volts DC
YES
P9 J9

A
A A
A A
A
Speed
Speed timing
timing sensor
sensor B
B B
B B
B
C
C C
C C
C
ECM
ECM

Sensor is
A
A
receiving the B
B + 13.32 v
correct voltage C
C
+V
Com

Main
 Engine Cranks, But Will
Not Start
ƒƒ Step 5 – Connect sensor to the breakout T

P9 J9

A
A A
A A
A A
A
Speed
Speed timing
timing sensor
sensor B
B B
B B
B B
B
C
C C
C C
C C
C
ECM
ECM

Main
 Engine Cranks, But Will
Not Start
ƒƒ Step 5 – Measure the voltage at pin A with reference to
pin B
P9 J9

A
A A
A A
A A
A
Speed
Speed timing
timing sensor
sensor B
B B
B B
B B
B
C
C C
C C
C C
C
ECM
ECM

+V
Com

Main
 Engine Cranks, But Will
Not Start
ƒƒ Step 5 – Is the voltage still between 11.5 and 13.5 volts
YES
P9 J9

A
A A
A A
A A
A
Speed
Speed timing
timing sensor
sensor B
B B
B B
B B
B
C
C C
C C
C C
C
ECM
ECM

The sensor is receiving the + 12.75 v

correct voltage +V
Com

Main
 Engine Cranks, But Will
Not Start
ƒƒ Step 6 – Remove the signal wire (pin C) from the engine
harness connector J9 to isolate the sensor signal wire
P9 J9

A
A A
A A
A A
A
Speed
Speed timing
timing sensor
sensor B
B B
B B
B B
B
C
C C
C C
C C
C
ECM
ECM

Main
 Engine Cranks, But Will
Not Start
ƒƒ Step 6 – Measure the voltage from breakout pin-C to
breakout pin-B, before and while cranking
P9 J9

A
A A
A A
A A
A
Speed
Speed timing
timing sensor
sensor B
B B
B B
B B
B
C
C C
C C
C C
C
ECM
ECM

+V
Com

Main
 Engine Cranks, But Will
Not Start
ƒƒ Step 6 – Is the voltage less than 2.0 volts DC or more
than 10.0 volts with key on, before cranking
P9 J9

A
A A
A A
A A
A
Speed
Speed timing
timing sensor
sensor B
B B
B B
B B
B
C
C C
C C
C C
C
ECM
ECM

+ .162v
+V
Com

Main
 Engine Cranks, But Will
Not Start
ƒƒ Step 6 – During cranking is the voltage between 2.0
volts DC and 9.0 volts DC
P9
NO J9

A
A A
A A
A A
A
Speed
Speed timing
timing sensor
sensor B
B B
B B
B B
B
C
C C
C C
C C
C
ECM
ECM

There is no output signal + .162 v

or it is out of limits +V
Com

Main
 Speed Timing Sensor
Step 7
ƒ Remove the existing
speed/timing sensor
ƒ Pull the slip head out
ƒ Reinstall the
speed/timing sensor

Position the timing wheel in a place not

allowing the slip head to fill a slot

Main
Component Diagram

Main
 5 volt Active Sensors
3176B, C-10,
++ 5V
5V
Ground
(36)
(36) +5v
+5v C-12, & 3406E
Oil Pressure Ground (30)
(30) Sensor
Sensor common
common
(8)
(8) Oil
Oil pressure
pressure
Data link Diagnostic
Data link
Tool
Fuel Temp
(3)
(3) Fuel
Fuel Temp
Temp

ECM
Boost Pressure
(23)
(23) Boost
Boost pressure
pressure

Coolant Temp
(14)
(14) Coolant
Coolant Temp
Temp
Signal
Signal

Main
Diagnostic Codes

Main
 Diagnostic Codes
A
A ++ 5V
5V
100 Oil Pressure B
B Ground
Ground
100
C
C
Data link Diagnostic
Data link
Tool
174 Fuel Temp
174

ECM
Boost Pressure
102
102

110 Coolant Temp

110
Signal
Signal
03
03 == Open
Open 04
04 == Short
Short

Main
 Diagnostic Codes
A
A ++ 5V
5V
100 Oil Pressure B
B Ground
Ground
100
C
C
Data link Diagnostic
Data link
Tool
174 Fuel Temp
174 102
102 –– 03
03

ECM
Boost Pressure
102
102

110 Coolant Temp

110
Signal
Signal
03
03 == Open
Open 04
04 == Short
Short

Main
 Diagnostic Codes
A
A ++ 5V
5V
B “A”
“A” shorted
shorted to
to “B”
“B”
100
100 Oil Pressure B Ground
Ground
C
C
Data link Diagnostic
Data link
Tool
174 Fuel Temp
174 232
232 –– 04
04

ECM
Boost Pressure
102
102

110 Coolant Temp

110
Signal
Signal
03
03 == Open
Open 04
04 == Short
Short

Main
 Troubleshooting
A
A ++ 5V
5V
B “A”
“A” shorted
shorted to
to “B”
“B”
100
100 Oil Pressure B Ground
Ground
C
C
Data link Diagnostic
Data link
Tool
174 Fuel Temp
174 232
232 –– 04
04

ECM
Boost Pressure
102
102

110 Coolant Temp

110 Unplug
Unplug
Signal
Signal
03
03 == Open
Open 04
04 == Short
Short

Main
 Troubleshooting
A
A ++ 5V
5V
B “A”
“A” shorted
shorted to
to “B”
“B”
100
100 Oil Pressure B Ground
Ground
C
C
Data link Diagnostic
Data link
Tool
174 Fuel Temp
174 232
232 –– 04
04

ECM
Boost Pressure
102
102 Unplug
Unplug

110 Coolant Temp

110 Unplug
Unplug
Signal
Signal
03
03 == Open
Open 04
04 == Short
Short

Main
 Troubleshooting
A
A ++ 5V
5V
B “A”
“A” shorted
shorted to
to “B”
“B”
100
100 Oil Pressure B Ground
Ground
C
C
Data link Diagnostic
Data link
Tool
174 Fuel Temp
174 Unplug
Unplug 232
232 –– 04
04

ECM
Boost Pressure
102
102 Unplug
Unplug

110 Coolant Temp

110 Unplug
Unplug
Signal
Signal
03
03 == Open
Open 04
04 == Short
Short

Main
 Troubleshooting
A
A ++ 5V
5V
B “A”
“A” shorted
shorted to
to “B”
“B”
100
100 Oil Pressure B Ground
Ground
C
Unplug
Unplug
C
Data link Diagnostic
Data link
Tool
174 Fuel Temp
174 Unplug
Unplug 100-03
100-03
174-03
174-03
ECM
Boost Pressure 102-03
102-03
102
102 Unplug
Unplug
110-03
110-03

110 Coolant Temp

110 Unplug
Unplug
Signal
Signal
03
03 == Open
Open 04
04 == Short
Short

Main
 Troubleshooting
A
A ++ 5V
5V
100 Oil Pressure B
B Ground
Ground
100
C
C
Data link Diagnostic
Data link
Tool
174 Fuel Temp
174 102
102 –– 03
03

ECM
Boost Pressure
102
102

110 Coolant Temp

110
Signal
Signal
03
03 == Open
Open 04
04 == Short
Short

Main
 Troubleshooting
A
A ++ 5V
5V
100 Oil Pressure B
B Ground
Ground
100
C
C
Data link Diagnostic
Data link
Tool
174 Fuel Temp
174 232
232 –– 04
04

ECM
Boost Pressure
102
102

110 Coolant Temp

110
Signal
Signal
03
03 == Open
Open 04
04 == Short
Short

Main
 Troubleshooting
A
A ++ 5V
5V
B “A”
“A” shorted
shorted to
to “B”
“B”
100
100 Oil Pressure B Ground
Ground
C
Unplug
Unplug
C
Data link Diagnostic
Data link
Tool
174 Fuel Temp
174 Unplug
Unplug 232
232 –– 04
04

ECM
Boost Pressure
102
102 Unplug
Unplug

110
110
Coolant Temp
Unplug
Unplug
?
Signal
Signal
03
03 == Open
Open 04
04 == Short
Short

Main
 5 volt Active Sensors
ECM
ECM -- Battery
Battery
ECM
ECM
ECM ++ Battery
Battery

55 V
A Any 3 wire,
V ++ 0.25
0.25 V
V +5
+5 volt
volt
5 volt
B Pressure
Common
Common Ground
Ground
or temp.
Sensor C sensor
Sensor Signal
Signal Signal
Signal

Main
 “C” Wire Signal Output Voltage
“-
“- 04”
04” Short
Short
120

100

80
2.5
2.5 volts
volts == 60
60 PSI
PSI
PSI
PSI 60
40 “-
“- 04”
04”
Short
Short
20
0
“-
“- 04”
04”
Short
Short

0 Volt 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0V

Main
 5 volt Active Sensors
ECM
ECM -- Battery
Battery
ECM
ECM
ECM ++ Battery
Battery

55 V
A Any
V ++ 0.25
0.25 V
V +5
+5 volt
volt
3 wire
B 5 volt
Common
Common Ground
Ground
Pressure
Sensor C or temp.
Sensor Signal
Signal Signal
Signal
sensor

“B”
“B” to
to “C”
“C” short
short

Main
 “C” Wire Signal Output Voltage
“-
“- 04”
04” Short
Short
120

100

80
2.5
2.5 volts
volts == 60
60 PSI
PSI
PSI
PSI 60
40 “-
“- 04”
04”
Short
Short
20
“B”
“B” to
to “C”
“C” short
short
0
“-
“- 04”
04” Code
Code 100-04
100-04
Short
Short
X
X
0 Volt 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0V

Main
 5 volt Active Sensors
ECM
ECM -- Battery
Battery
ECM
ECM
ECM ++ Battery
Battery

55 V
A Any
V ++ 0.25
0.25 V
V +5
+5 volt
volt
3 wire
B 5 volt
Common
Common Ground
Ground
Pressure
Sensor C or temp.
Sensor Signal
Signal Signal
Signal
sensor

“C”
“C” to
to “A”
“A” short
short

Main
 “C” Wire Signal Output Voltage
“-
“- 04”
04” Short
Short
120

100

80
2.5
2.5 volts
volts == 60
60 PSI
PSI
PSI
PSI 60
40 “-
“- 04”
04”
Short
Short
20
0
“C”
“C” to
to “A”
“A” short
short
“-
“- 04”
04” 100-04
100-04
Short
Short
X
X
0 Volt 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0V

Main
 5 volt Active Sensors
ECM
ECM -- Battery
Battery
ECM
ECM
ECM ++ Battery
Battery

55 V
A Any
V ++ 0.25
0.25 V
V +5
+5 volt
volt
3 wire
B 5 volt
Common
Common Ground
Ground
Pressure
Sensor C or temp.
Sensor Signal
Signal Signal
Signal
sensor

“C”
“C” Open
Open What
What code?
code? 100-03
100-03

Main
 “C” Wire Signal Output Voltage
“-
“- 04”
04” Short
Short
120

100 What’s
What’s the
the voltage
voltage on
on the
the “C”
“C” wire?
wire?
80 66 vv ++
2.5
2.5 volts
volts == 60
60 PSI
PSI
PSI
PSI 60
40 “-
“- 04”
04”
Short
Short
20
0
“-
“- 04”
04”
Short
Short

0 Volt 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0V

Main
 “C” Wire Signal Output Voltage
Battery
Battery ++
100
100 volt
volt DC
DC EUI
EUI
Battery
Battery --

13.2
13.2 vv speed
speed timing
timing sensor
sensor

88 vv throttle
throttle position
position sensor
sensor

6.4
6.4 vv pull
pull up
up

A
A 55 vv sensor
sensor supply
supply
B
B
C
C Micro-processor
Micro-processor

Main
 5 volt Active Sensors
ECM
ECM -- Battery
Battery “B”
“B” to
to “C”
“C” swap
swap
ECM
ECM
ECM ++ Battery
Battery

55 V
A Any
V ++ 0.25
0.25 V
V +5
+5 volt
volt
3 wire
B 5 volt
Ground
Ground
Pressure
C Signal
or temp.
Signal
sensor

What
What code?
code? No
No code
code

Main
 “C” Wire Signal Output Voltage
“-
“- 04”
04” Short
Short
120

100

80
2.5
2.5 volts
volts == 60
60 PSI
PSI
PSI
PSI 60
Look
Look at
at status
status “-
40 “- 04”
04”
screen
screen –– low
low oil
oil Short
Short
20 pressure
pressure oror
0 “B”
“B” to
to “C”
“C” swap
swap temp
temp –– etc.
etc.
“-
“- 04”
04”
Short
Short

0 Volt 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0V

Main
 5 volt Active Sensors
ECM
ECM -- Battery
Battery “A”
“A” to
to “C”
“C” swap
swap
ECM
ECM
ECM ++ Battery
Battery

55 V
A Any
V ++ 0.25
0.25 V
V +5
+5 volt
volt
A
A 3 wire
B 5 volt
Ground
Ground
B
B Pressure
C Signal
or temp.
Signal
C
C sensor

What
What code?
code? No
No code
code

Main
 “C” Wire Signal Output Voltage
“-
“- 04”
04” Short
Short
120

100

80
2.5
2.5 volts
volts == 60
60 PSI
PSI
PSI
PSI 60
Look
Look at
at status
status “-
40 “- 04”
04”
screen
screen –– High
High oil
oil Short
Short
20 pressure
pressure or
or
0 temp
temp –– etc.
etc.
“-
“- 04”
04”
Short
Short “A”
“A” to
to “C”
“C” swap
swap

0 Volt 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0V

Main
Electronics Class

Questions so
far?

Main