ELECTRICAL & POWER CONTROL

SECTION
POWER CONTROL SYSTEM
PCS B

E
CONTENTS
IPDM E/R B2099 IGNITION RELAY OFF STUCK ............ 14 F
Description ...............................................................14
SYSTEM DESCRIPTION .............................. 2 DTC Logic ................................................................14
Diagnosis Procedure ...............................................14 G
RELAY CONTROL SYSTEM .............................. 2
System Diagram ........................................................ 2 POWER SUPPLY AND GROUND CIRCUIT .... 15
System Description ................................................... 3 Diagnosis Procedure ...............................................15
Component Parts Location ........................................ 4 H
ECU DIAGNOSIS INFORMATION .............. 16
SIGNAL BUFFER SYSTEM ................................ 5
System Diagram ........................................................ 5 IPDM E/R (INTELLIGENT POWER DISTRI- I
System Description ................................................... 5 BUTION MODULE ENGINE ROOM) ................ 16
Component Parts Location ........................................ 5 Reference Value ......................................................16
Wiring Diagram - IPDM E/R - ..................................21
POWER CONSUMPTION CONTROL SYS- Fail-safe ...................................................................24 J
TEM ..................................................................... 6 DTC Index ...............................................................26
System Diagram ........................................................ 6
System Description ................................................... 6 PRECAUTION .............................................. 27 K
Component Parts Location ........................................ 7
PRECAUTIONS ................................................. 27
DIAGNOSIS SYSTEM (IPDM E/R) ...................... 8 Precaution for Supplemental Restraint System
Diagnosis Description ............................................... 8 (SRS) "AIR BAG" and "SEAT BELT PRE-TEN- L
CONSULT-III Function (IPDM E/R) ......................... 10 SIONER" .................................................................27

DTC/CIRCUIT DIAGNOSIS ......................... 13 REMOVAL AND INSTALLATION ............... 28 PCS

U1000 CAN COMM CIRCUIT .............................13 IPDM E/R (INTELLIGENT POWER DISTRI-
Description .............................................................. 13 BUTION MODULE ENGINE ROOM) ................ 28
DTC Logic ............................................................... 13 Exploded View .........................................................28 N
Diagnosis Procedure ............................................... 13 Removal and Installation .........................................28

Revision: 2009 October PCS-1 T31

 RELAY CONTROL SYSTEM
< SYSTEM DESCRIPTION > [IPDM E/R]

SYSTEM DESCRIPTION
RELAY CONTROL SYSTEM
System Diagram INFOID:0000000005545930

JMMIA0320GB

NOTE:
• *1: With front fog lamp system
• *2: Except M/T models
• *3: M/T models
• *4: MR engine and QR engine models
• *5: With headlamp washer system
• *6: With vehicle security system or panic alarm system

Revision: 2009 October PCS-2 T31

 RELAY CONTROL SYSTEM
< SYSTEM DESCRIPTION > [IPDM E/R]
System Description INFOID:0000000005545931

A
IPDM E/R activates the internal control circuit to perform the relay ON-OFF control according to the input sig-
nals from various sensors and the request signals received from control units via CAN communication.
CAUTION: B
IPDM E/R integrated relays cannot be removed.

Control relay Input/output Transmit unit Control part Reference page

C
• Headlamp low • EXL-23 [Xenon (For South Afri-
Headlamp low relay Low beam request signal • Aiming motor ca)]
(Manual aiming) • EXL-204 [Xenon (For Mexico)]
• EXL-371 [Xenon (Except for D
South Africa and Mexico)]
BCM (CAN)
• EXL-550 [Halogen (For South
• Headlamp high relay RH Africa)]
High beam request signal Headlamp high
• Headlamp high relay LH • EXL-694 [Halogen (For Mexico)] E
• EXL-826 [Halogen (Except for
South Africa and Mexico)]
Front fog lamp • EXL-28 (For South Africa) F
Front fog light request sig- NOTE: • EXL-209 (For Mexico)
Front fog lamp relay BCM (CAN)
nal With front fog lamp • EXL-376 (Except for South Afri-
system ca and Mexico)
• Parking lamp • EXL-30 (For South Africa) G
• License plate • EXL-213 (For Mexico)
lamp • EXL-380 (Except for South Afri-
• Tail lamp ca and Mexico) H
Tail lamp relay Position light request signal BCM (CAN)
• INL-13 (For South Africa)
• INL-86 (For Mexico)
Illuminations
• INL-156 (Except for South Africa
and Mexico) I
Front wiper request signal BCM (CAN) • WW-9 (For South Africa)
• Front wiper relay • WW-108 (For Mexico)
Front wiper Front wiper
• Front wiper high relay Front wiper auto stop signal • WW-204 (Except for South Afri- J
motor ca and Mexico)
• DEF-8 (For South Africa)
Rear window defogger re- Rear window defogger Rear window de- • DEF-68 (For Mexico) K
BCM (CAN)
lay switch signal fogger • DEF-123 (Except for South Afri-
ca and Mexico)
• SEC-12 (For South Africa)
Ignition and starter request • SEC-96 (For Mexico)
L
Starter relay BCM (CAN) Starter motor
signal • SEC-184 (Except for South Afri-
ca and Mexico)
• Cooling fan relay-1 PCS
• ECM-51 (MR20DE)
• Cooling fan relay-2
Cooling fan speed request • ECQ-59 (QR25DE TYPE1)
• Cooling fan relay-3 ECM (CAN) Cooling fan
signal • ECQ-408 (QR25DE TYPE2)
• Cooling fan relay-4
• ECR-51 (M9R) N
• Cooling fan relay-5
• HAC-14 [Auto A/C (For South Af-
rica)]
• HAC-121 [Auto A/C (For Mexi- O
co)]
• HAC-223 [Auto A/C (Except for
A/C compressor request A/C compressor South Africa and Mexico)]
A/C relay ECM (CAN) P
signal (magnet clutch) • HAC-330 [Manual A/C (For
South Africa)]
• HAC-396 [Manual A/C (For Mex-
ico)]
• HAC-457 [Manual A/C (Except
for South Africa and Mexico)]

Revision: 2009 October PCS-3 T31

 RELAY CONTROL SYSTEM
< SYSTEM DESCRIPTION > [IPDM E/R]
Control relay Input/output Transmit unit Control part Reference page
Each control unit,
sensor, actuator
Ignition relay Ignition switch ON signal Ignition switch and relay PCS-14
(Ignition power sup-
ply)
Headlamp washer relay
NOTE: Headlamp washer request
BCM (CAN) Headlamp washer WW-214
With headlamp washer signal
system
• Vehicle security system
- SEC-100 (For Mexico)
Horn relay - SEC-187 (Except for South Afri-
NOTE: ca and Mexico)
Horn request signal BCM (CAN) Horn
With vehicle security sys- • Panic alarm system
tem or panic alarm system - DLK-179 (For Mexico)
- DLK-358 (Except for South Afri-
ca and Mexico)

Component Parts Location INFOID:0000000005545932

JPMIA0312ZZ

1. IPDM E/R
A. Engine room (LH)

Revision: 2009 October PCS-4 T31

 SIGNAL BUFFER SYSTEM
< SYSTEM DESCRIPTION > [IPDM E/R]
SIGNAL BUFFER SYSTEM
A
System Diagram INFOID:0000000005545933

D
JPMIA0755GB

NOTE:
*: With vehicle security system E
System Description INFOID:0000000005545934

• IPDM E/R reads the status of the oil pressure switch and transmits the oil pressure switch signal to BCM and F
ECM via CAN communication. Refer to MWI-19, "WARNING LAMPS/INDICATOR LAMPS : System Dia-
gram".
• IPDM E/R reads the status of the hood switch and transmits the hood switch signal to BCM via CAN commu-
nication. Refer to SEC-100, "System Diagram" (For Mexico) or SEC-187, "System Diagram" (Except for G
South Africa and Mexico).
Component Parts Location INFOID:0000000005545935
H

JPMIA0312ZZ
PCS

1. IPDM E/R
A. Engine room (LH) N

Revision: 2009 October PCS-5 T31

 POWER CONSUMPTION CONTROL SYSTEM
< SYSTEM DESCRIPTION > [IPDM E/R]
POWER CONSUMPTION CONTROL SYSTEM
System Diagram INFOID:0000000005545936

JSMIA0050GB

System Description INFOID:0000000005545937

OUTLINE
• IPDM E/R incorporates a power consumption control function that reduces the power consumption accord-
ing to the vehicle status.
• IPDM E/R changes its status (control mode) with the sleep wake up signal received from BCM via CAN com-
munication.
Normal mode (wake-up)
- CAN communication is normally performed with other control units.
- Individual unit control by IPDM E/R is normally performed.
Low power consumption mode (sleep)
- Low power consumption control is active.
- CAN transmission is stopped.
Sleep mode activation
• IPDM E/R judges that the sleep-ready conditions are fulfilled when the ignition switch is OFF and none of the
conditions below are present. Then it transmits a sleep-ready signal (ready) to BCM via CAN communica-
tion.
- Front wiper fail-safe operation
- Ignition relay ON or OFF stuck detection
- Outputting signals to actuators
- Switches or relays operating
- Auto active test is starting
- Communicating with CONSULT-III
- Hood switch status is changed (with vehicle security system)
- Output requests are being received from control units via CAN communication.
• IPDM E/R stops CAN communication and enters the low power consumption mode when it receives a sleep
wake up signal (sleep) from BCM and the sleep-ready conditions are fulfilled.
Wake-up operation
• IPDM E/R changes from the low power consumption mode to the normal mode when it receives a sleep
wake-up signal (wake up) from BCM or any of the following conditions is fulfilled. In addition, it transmits a
sleep-ready signal (not-ready) to BCM via CAN communication to report the CAN communication start.
- Ignition switch ON
- The hood switch status changes.
- An output request is received from a control unit via CAN communication.

Revision: 2009 October PCS-6 T31

 POWER CONSUMPTION CONTROL SYSTEM
< SYSTEM DESCRIPTION > [IPDM E/R]
Component Parts Location INFOID:0000000005545938

JSMIA0051ZZ
J
1. Combination meter 2. IPDM E/R 3. BCM
A. Engine room (LH) B. Over the glove box
K

PCS

Revision: 2009 October PCS-7 T31

 DIAGNOSIS SYSTEM (IPDM E/R)
< SYSTEM DESCRIPTION > [IPDM E/R]
DIAGNOSIS SYSTEM (IPDM E/R)
Diagnosis Description INFOID:0000000005545939

Auto active test

Description
In auto active test mode, the IPDM E/R sends a drive signal to the following systems to check their operation.
• Oil pressure warning lamp
• Rear window defogger
• Front wiper (LO, HI)
• Parking lamps
• License plate lamps
• Tail lamps
• Front fog lamps
• Headlamps (LO, HI)
• A/C compressor (magnet clutch)
• Cooling fan (LO, MID, HI)
Operation procedure
1. Close the hood and lift the wiper arms from the windshield. (Prevent windshield damage due to wiper
operation)
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield beforehand.
2. Turn ignition switch OFF.
3. Turn the ignition switch ON, and within 20 seconds, press the driver door switch 10 times. Then turn the
ignition switch OFF.
CAUTION:
Close passenger door.
4. Turn the ignition switch ON within 10 seconds. Then the horn sounds once and the auto active test starts.
NOTE:
Only a vehicle with the vehicle security system, the horn sounds.
5. The oil pressure warning lamp starts blinking when the auto active test starts.
6. After a series of the following operations is repeated 3 times, auto active test is completed.
NOTE:
When auto active test mode has to be cancelled halfway through test, turn ignition switch OFF.
CAUTION:
• If auto active test mode cannot be actuated, check door switch system.
• Never start the engine.
Inspection in auto active test mode
When auto active test mode is actuated, the following 6 steps are repeated 3 times.

JPMIA0313ZZ

Revision: 2009 October PCS-8 T31

 DIAGNOSIS SYSTEM (IPDM E/R)
< SYSTEM DESCRIPTION > [IPDM E/R]

Operation A
Inspection location Operation
sequence
A Oil pressure warning lamp Blinks continuously during operation of auto active test.
1 Rear window defogger 10 seconds B
2 Front wiper LO for 5 seconds → HI for 5 seconds
• Parking lamps
• License plate lamps C
3 10 seconds
• Tail lamps
• Front fog lamps
4 Headlamps LO for 20 seconds and HI ON ⇔ OFF 5 times D
5 A/C compressor (magnet clutch) ON ⇔ OFF 5 times
6 Cooling fan LO for 5 seconds → MID for 3 seconds → HI for 2 seconds
E
Concept of auto active test

JPMIA0310GB

• IPDM E/R starts the auto active test with the door switch signals transmitted by BCM via CAN communica-
tion. Therefore, the CAN communication line between IPDM E/R and BCM is considered normal if the auto K
active test starts successfully.
• The auto active test facilitates troubleshooting if any systems controlled by IPDM E/R cannot be operated.
Diagnosis chart in auto active test mode L

Symptom Inspection contents Possible cause

PCS
YES BCM signal input circuit

Perform auto active test. • Rear window defogger

Rear window defogger does not operate Does the rear window defog- • Rear window defogger ground circuit
ger operate? NO • Harness or connector between IPDM N
E/R and rear window defogger
• IPDM E/R
Any of the following components do not operate YES BCM signal input circuit O
• Parking lamps
• License plate lamps Perform auto active test. • Lamp or motor
• Tail lamps Does the applicable system • Lamp or motor ground circuit
• Front fog lamps operate? NO • Harness or connector between IPDM P
• Headlamps (HI, LO) E/R and applicable system
• Front wiper (HI, LO) • IPDM E/R

Revision: 2009 October PCS-9 T31

 DIAGNOSIS SYSTEM (IPDM E/R)
< SYSTEM DESCRIPTION > [IPDM E/R]
Symptom Inspection contents Possible cause
• Communication signal between BCM
and auto amp.
• BCM
YES • CAN communication signal between
Perform auto active test. BCM and ECM
A/C compressor does not operate Does the magnet clutch oper- • CAN communication signal between
ate? ECM and IPDM E/R
• Magnet clutch
• Harness or connector between IPDM
NO
E/R and magnet clutch
• IPDM E/R
• Harness or connector between IPDM
E/R and oil pressure switch
YES
• Oil pressure switch
Perform auto active test. • IPDM E/R
Oil pressure warning lamp does not operate Does the oil pressure warning • CAN communication signal between
lamp blink? IPDM E/R and BCM
NO • CAN communication signal between
BCM and combination meter
• Combination meter
• ECM signal input circuit
YES • CAN communication signal between
ECM and IPDM E/R
• Cooling fan motor-2 power supply cir-
cuit
• Cooling fan motor-1 ground circuit
• Cooling fan relay-4 or cooling fan re-
lay-5 power supply circuit
• Cooling fan relay-5 ground circuit
Perform auto active test. • Harness or connector between IPDM
Cooling fan does not operate E/R and cooling fan motor
Does the cooling fan operate?
• Harness or connector between IPDM
NO
E/R, and cooling fan relay-4 or cooling
fan relay-5
• Harness or connector between cooling
fan motor-2, and cooling fan relay-4 or
cooling fan relay-5
• Cooling fan relay-4 or cooling fan re-
lay-5
• Cooling fan motor
• IPDM E/R

CONSULT-III Function (IPDM E/R) INFOID:0000000005545940

APPLICATION ITEM
CONSULT-III performs the following functions via CAN communication with IPDM E/R.

Diagnosis mode Description

Self Diagnostic Result Displays the diagnosis results judged by IPDM E/R.
Data Monitor Displays the real-time input/output data from IPDM E/R input/output data.
Active Test IPDM E/R can provide a drive signal to electronic components to check their operations.
CAN Diag Support Monitor The results of transmit/receive diagnosis of CAN communication can be read.

SELF DIAGNOSTIC
Refer to PCS-26, "DTC Index".
DATA MONITOR
Monitor item

Revision: 2009 October PCS-10 T31

 DIAGNOSIS SYSTEM (IPDM E/R)
< SYSTEM DESCRIPTION > [IPDM E/R]

Monitor Item MAIN A

Description
[Unit] SIGNALS
MOTOR FAN REQ Displays the value of the cooling fan speed signal received from ECM via CAN commu-
×
[1 - 4] nication.
B
AC COMP REQ Displays the status of the A/C compressor request signal received from ECM via CAN
×
[Off/On] communication.
TAIL&CLR REQ Displays the status of the position light request signal received from BCM via CAN com- C
×
[Off/On] munication.
HL LO REQ Displays the status of the low beam request signal received from BCM via CAN commu-
×
[Off/On] nication.
D
HL HI REQ Displays the status of the high beam request signal received from BCM via CAN com-
×
[Off/On] munication.
Displays the status of the front fog light request signal received from BCM via CAN com-
E
FR FOG REQ munication.
×
[Off/On] NOTE:
This item is monitored only the vehicle with front fog lamp system.
Displays the status of the headlamp washer request signal received from BCM via CAN F
HL WASHER REQ communication.
[Off/On] NOTE:
This item is monitored only the vehicle with headlamp washer system.
G
FR WIP REQ Displays the status of the front wiper request signal received from BCM via CAN com-
×
[Stop/1LOW/Low/Hi] munication.
WIP AUTO STOP H
× Displays the status of the front wiper auto stop signal judged by IPDM E/R.
[STOP P/ACT P]
WIP PROT
× Displays the status of the front wiper fail-safe operation judged by IPDM E/R.
[Off/BLOCK]
I
ST RLY REQ Displays the status of the ignition and starter request signal received from BCM via CAN
[Off/On] communication.
IGN RLY
× Displays the status of the ignition relay judged by IPDM E/R. J
[Off/On]
RR DEF REQ Displays the status of the rear defogger request signal received from BCM via CAN com-
×
[Off/On] munication.
K
OIL P SW
Displays the status of the oil pressure switch judged by IPDM E/R.
[Open/Close]
REV SW NOTE:
[Off/On] This item is indicated, but not monitored. L
DTRL REQ NOTE:
[Off/On] This item is indicated, but not monitored.
PCS
Displays the status of the hood switch judged by IPDM E/R.
HOOD SW
NOTE:
[Off/On]
This item is monitored only the vehicle with the vehicle security system.
Displays the status of the horn request signal by vehicle security system or panic alarm N
system received from BCM via CAN communication.
THFT HRN REQ
NOTE:
[Off/On]
This item is monitored only the vehicle with the vehicle security system or panic alarm
system. O
Displays the status of the horn request signal by key fob LOCK operation received from
BCM via CAN communication.
HORN CHIRP
NOTE: P
[Off/On]
This item is monitored only the vehicle with horn reminder function of remote keyless en-
try system.

ACTIVE TEST
Test item

Revision: 2009 October PCS-11 T31

 DIAGNOSIS SYSTEM (IPDM E/R)
< SYSTEM DESCRIPTION > [IPDM E/R]

Test item Operation Description

Off OFF
REAR DEFOGGER
On Operates the rear window defogger relay.
Off OFF
FRONT WIPER Lo Operates the front wiper relay.
Hi Operates the front wiper relay and front wiper high relay.
1 OFF
2 Operates the cooling fan relay (LO operation).
MOTOR FAN
3 Operates the cooling fan relay (MID operation).
4 Operates the cooling fan relay (HI operation).
HEAD LAMP WASHER On Operates the headlamp washer relay for 1 second.
Off OFF
TAIL Operates the tail lamp relay.
Lo Operates the headlamp low relay.
EXTERNAL LAMPS Operates the headlamp low relay and ON/OFF the headlamp high relay at 4 sec-
Hi
onds intervals.
Operates the front fog lamp relay.
Fog NOTE:
This item can test only the vehicle with front fog lamp system.
Operates horn relay for 20 ms.
NOTE:
HORN On
This item can test only the vehicle with vehicle security system or panic alarm
system.

Revision: 2009 October PCS-12 T31

 U1000 CAN COMM CIRCUIT
< DTC/CIRCUIT DIAGNOSIS > [IPDM E/R]

DTC/CIRCUIT DIAGNOSIS A
U1000 CAN COMM CIRCUIT
Description INFOID:0000000005545941
B
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control unit, and each control unit shares information and links with C
other control units during operation (not independent). In CAN communication, control units are connected
with 2 communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only. D
CAN Communication Signal Chart. Refer to LAN-26, "CAN Communication Signal Chart".
DTC Logic INFOID:0000000005545942

E
DTC DETECTION LOGIC

CONSULT-III display F
DTC DTC Detection Condition Possible cause
description
When IPDM E/R cannot communicate CAN
U1000 CAN COMM CIRCUIT communication signal continuously for 2 sec- CAN communication system G
onds or more.

Diagnosis Procedure INFOID:0000000005545943

H
1.PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 seconds or more.
I
2. Check “Self Diagnostic Result”.
Is “U1000: CAN COMM CIRCUIT” displayed?
YES >> Refer to LAN-17, "Trouble Diagnosis Flow Chart". J
NO >> Refer to GI-36, "Intermittent Incident".

PCS

Revision: 2009 October PCS-13 T31

 B2099 IGNITION RELAY OFF STUCK
< DTC/CIRCUIT DIAGNOSIS > [IPDM E/R]
B2099 IGNITION RELAY OFF STUCK
Description INFOID:0000000005545944

The ignition relay integrated in IPDM E/R is operated with ignition switch ON signal from the ignition switch.
DTC Logic INFOID:0000000005545945

DTC DETECTION LOGIC

CONSULT-III display
DTC DTC Detection Condition Possible causes
description
When CPU detects the ignition relay is OFF, it is received the ignition relay sig-
B2099 IGN RELAY OFF Ignition relay
nal (ON) by CAN communication more than 1 second from BCM.

Diagnosis Procedure INFOID:0000000005545946

1.PERFORM SELF DIAGNOSIS

1. Turn the ignition switch ON.
2. Select “Self Diagnostic Result” of “IPDM E/R”. Erase DTC.
3. Turn ignition switch OFF.
4. Turn the ignition switch ON. Check “Self Diagnostic Result” again.
Is “B2099: IGN RELAY OFF” displayed?
YES >> Replace IPDM E/R.
NO >> Refer to GI-36, "Intermittent Incident".

Revision: 2009 October PCS-14 T31

 POWER SUPPLY AND GROUND CIRCUIT
< DTC/CIRCUIT DIAGNOSIS > [IPDM E/R]
POWER SUPPLY AND GROUND CIRCUIT
A
Diagnosis Procedure INFOID:0000000005545947

1.CHECK FUSIBLE LINK B

Check that the following IPDM E/R fusible link is not blown.

Signal name Fusible link No. C

C
Battery power supply E
D
K
Is the fusible link fusing?
YES >> Replace the blown fusible link after repairing the affected circuit if a fusible link is blown. E
NO >> GO TO 2.
2.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF. F
2. Disconnect IPDM E/R connectors.
3. Check voltage between IPDM E/R harness connectors and ground.
G
Terminals
(+) Voltage
(−) H
IPDM E/R (Approx.)

Connector Terminal
1 I
E9 Ground
2 Battery voltage
E10 6
J
Is the measurement value normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
K
3.CHECK GROUND CIRCUIT
Check continuity between IPDM E/R harness connectors and ground.
L
IPDM E/R
Continuity
Connector Terminal
Ground PCS
E11 11
Exist
E13 25
Does continuity exist? N
YES >> INSPECTION END
NO >> Repair harness or connector.
O

Revision: 2009 October PCS-15 T31

 IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
< ECU DIAGNOSIS INFORMATION > [IPDM E/R]

ECU DIAGNOSIS INFORMATION

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)
Reference Value INFOID:0000000005545948

VALUES ON THE DIAGNOSIS TOOL

Monitor Item Condition Value/Status

Changes depending on engine
coolant temperature, air condition-
MOTOR FAN REQ Engine idle speed 1-4
er operation status, vehicle speed,
etc.
A/C switch OFF Off
AC COMP REQ Engine running A/C switch ON
On
(Compressor is operating)
Lighting switch OFF Off
TAIL&CLR REQ
Lighting switch 1ST, 2ND or AUTO (Light is illuminated) On
Lighting switch OFF Off
HL LO REQ
Lighting switch 2ND or AUTO (Light is illuminated) On
Lighting switch OFF Off
HL HI REQ
Lighting switch HI (Light is illuminated) On

Lighting switch 2ND or Front fog lamp switch OFF Off

FR FOG REQ
AUTO (Light is illuminated) Front fog lamp switch ON On

HL WASHER REQ Front washer switch OFF Off

NOTE: Ignition switch ON, and low Front washer switch ON
This item is monitored only the vehicle with beam headlamp is ON (When headlamp washer is operat- On
headlamp washer. ing)
Front wiper switch OFF Stop
Front wiper switch INT 1LOW
FR WIP REQ Ignition switch ON
Front wiper switch LO Low
Front wiper switch HI Hi
Front wiper stop position STOP P
WIP AUTO STOP Ignition switch ON Any position other than front wiper
ACT P
stop position
Front wiper operates normally Off
WIP PROT Ignition switch ON Front wiper stops at fail-safe oper-
BLOCK
ation

ST RLY REQ When Intelligent Key is outside the vehicle, and the push switch
Off
NOTE: is pushed
Vehicle without Intelligent Key system indi- When Intelligent Key is inside the vehicle, and the push switch is
cates only “ON”, and it does not change. On
pushed
Ignition switch OFF or ACC Off
IGN RLY
Ignition switch ON On
Rear window defogger switch OFF Off

RR DEF REQ Ignition switch ON Rear window defogger switch ON

(Rear window defogger is operat- On
ing)
Ignition switch OFF, ACC or engine running Open
OIL P SW
Ignition switch ON Close

Revision: 2009 October PCS-16 T31

 IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
< ECU DIAGNOSIS INFORMATION > [IPDM E/R]
Monitor Item Condition Value/Status
A
NOTE:
REV SW Off
This item is indicated, but not monitored.
NOTE:
DTRL REQ Off B
This item is indicated, but not monitored.
HOOD SW Close the hood Off
NOTE:
This item is monitored only the vehicle with Open the hood On C
the vehicle security system.
THFT HRN REQ Not operation Off
NOTE: D
This item is monitored only the vehicle with Horn is activated with vehicle security system. On
the vehicle security system.
HORN CHIRP Not operation Off
NOTE: E
This item is monitored only the vehicle with Horn is activated with the horn reminder function of remote key-
the horn reminder function of remote keyless On
less entry system.
entry system.
F
TERMINAL LAYOUT

PCS

JPMIA0311ZZ

PHYSICAL VALUES

Revision: 2009 October PCS-17 T31

 IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
< ECU DIAGNOSIS INFORMATION > [IPDM E/R]

Terminal No. Description

(Wire color) Value
Input/ Condition
Signal name (Approx.)
+ − Output
1
Ground Battery power supply Input Ignition switch OFF Battery voltage
(R)
2
Ground Battery power supply Input Ignition switch OFF Battery voltage
(G)

3 When engine is clanking Battery voltage

Ground Starter relay power supply Output
(O) When engine is not clanking 0V

4 Cooling fan relay-1 power Cooling fan opera- OFF 0V

Ground Output
(W) supply tion MID or HI Battery voltage

5 Ignition switch OFF, ACC or ON 0V

Ground Ignition switch START Input
(R) Ignition switch START Battery voltage
6 Battery power supply
Ground Input Ignition switch OFF Battery voltage
(BR) (Cooling fan relay)

7 Cooling fan motor-2 (HI) Cooling fan opera- OFF Battery voltage
Ground —
(P) ground tion HI 0V

8 Cooling fan relay-2 power Cooling fan opera- OFF 0V

Ground Output
(G) supply tion HI Battery voltage
11
Ground Ground — Ignition switch ON 0V
(B)
Rear window defogger
0V
12 Rear window defogger re- switch OFF
Ground Output Ignition switch ON
(O) lay power supply Rear window defogger
Battery voltage
switch ON

16*1 Front fog lamp switch OFF 0V

Ground Front fog lamp (LH) Output Lighting switch 1ST
(Y) Front fog lamp switch ON Battery voltage

17*1 Front fog lamp switch OFF 0V

Ground Front fog lamp (RH) Output Lighting switch 1ST
(W) Front fog lamp switch ON Battery voltage

18 Lighting switch OFF 0V

Ground Headlamp LO (LH) Output
(L) Lighting switch 2ND Battery voltage

19*2 Headlamp aiming motor Lighting switch OFF 0V

Ground Output
(P) power supply Lighting switch 2ND Battery voltage

20 Lighting switch OFF 0V

Ground Headlamp LO (RH) Output
(SB) Lighting switch 2ND Battery voltage
Lighting switch OFF 0V
21
Ground Headlamp HI (LH) Output • Lighting switch 2ND and HI
(G) Battery voltage
• lighting switch PASS
Lighting switch OFF 0V
22
Ground Headlamp HI (RH) Output • Lighting switch 2ND and HI
(LG) Battery voltage
• lighting switch PASS

23 Engine stopped 0V
Ground Oil pressure switch Input Ignition switch ON
(W) Engine running Battery voltage
Front wiper stop position 0V
24
Ground Front wiper auto stop Input Ignition switch ON Any position other than
(Y) Battery voltage
front wiper stop position
25
Ground Ground — Ignition switch ON 0V
(B)

Revision: 2009 October PCS-18 T31

 IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
< ECU DIAGNOSIS INFORMATION > [IPDM E/R]
Terminal No. Description
(Wire color) Value A
Input/ Condition
Signal name (Approx.)
+ − Output
26 Input/
— CAN-L — — B
(P) Output
27 Input/
— CAN-H — —
(L) Output
OFF Battery voltage C
31 Cooling fan opera-
Ground Cooling fan relay-4 control Output
(V) tion LO 0V
After passing approximately 2 seconds or more
Battery voltage D
after turning the ignition switch from ON to OFF
32*3 Ground ETC relay control Input
(LG) • Ignition switch ON
• For approximately 2 seconds after turning igni- 0V
tion switch from ON to OFF E
Ignition switch OFF 0V
33*3 Ground Fuel pump relay control Input Engine stopped Battery voltage
(GR) Ignition switch ON F
Engine running 0.8 V

34*4 Close the hood Battery voltage

Ground Hood switch Input
(Y) Open the hood 0V G
When headlamp washer is
Battery voltage
35* 5 Headlamp washer relay not operating
Ground Output Ignition switch ON
(W) control When headlamp washer is H
0V
operating

37 Tail, license plate lamps Lighting switch OFF 0V

Ground Output I
(R) and illuminations Lighting switch 1ST Battery voltage

38 Lighting switch OFF 0V

Ground Parking lamp (LH) Output
(O) Lighting switch 1ST Battery voltage
J
39 Lighting switch OFF 0V
Ground Parking lamp (RH) Output
(GR) Lighting switch 1ST Battery voltage

40 Ignition switch OFF or ACC 0V K

Ground Ignition relay power supply Output
(V) Ignition switch ON Battery voltage
41 Ignition switch OFF or ACC 0V
L
(O)*3 Ground Ignition relay power supply Output
Ignition switch ON Battery voltage
(LG)*6

42 Front wiper switch OFF 0V

Ground Front wiper HI Output Ignition switch ON PCS
(L) Front wiper switch HI Battery voltage

43 Front wiper switch OFF 0V

Ground Front wiper LO Output Ignition switch ON
(G) Front wiper switch LO Battery voltage N
Ignition switch ON Selector lever “P” or “N” Battery voltage
45 (Except M/T mod- Selector lever in any posi-
Ground Starter relay power supply Input els) 0V O
(Y) tion other than “P” or “N”
Ignition switch ON (M/T models) Battery voltage
• Ignition switch OFF or ACC
• After passing approximately 1 second or more 0V
P
46* 3 Fuel pump relay power after turning the ignition switch ON
Ground Output
(W) supply • For approximately 1 second after turning the
ignition switch ON Battery voltage
• Engine running

Revision: 2009 October PCS-19 T31

 IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
< ECU DIAGNOSIS INFORMATION > [IPDM E/R]
Terminal No. Description
(Wire color) Value
Input/ Condition
Signal name (Approx.)
+ − Output
After passing approximately 20 seconds or more
0V
47 after turning the ignition switch from ON to OFF
(GR)*3 Ground ECM relay power supply Output • Ignition switch ON
(V)*6 • For approximately 20 seconds after turning ig- Battery voltage
nition switch from ON to OFF
After passing approximately 20 seconds or more
0V
48 after turning the ignition switch from ON to OFF
(R)*3 Ground ECM relay power supply Output • Ignition switch ON
(G)*6 • For approximately 20 seconds after turning ig- Battery voltage
nition switch from ON to OFF

50 Cooling fan opera- OFF Battery voltage

Ground Cooling fan relay-5 control Output
(G) tion MID or HI 0V
After passing approximately 20 seconds or more
Battery voltage
after turning the ignition switch from ON to OFF
51
Ground ECM relay control Output • Ignition switch ON
(W)
• For approximately 20 seconds after turning ig- 0V
nition switch from ON to OFF
After passing approximately 2 seconds or more
0V
after turning the ignition switch from ON to OFF
3
52* Ground ETC relay power supply Output
(P) • Ignition switch ON
• For approximately 2 seconds after turning igni- Battery voltage
tion switch from ON to OFF
Engine stopped 0V
A/C switch OFF 0V
55
Ground A/C relay power supply Output
(O) Engine running A/C switch ON
(A/C compressor is oper- Battery voltage
ating)

56 Ignition switch OFF or ACC 0V

Ground Ignition switch ON Input
(L) Ignition switch ON Battery voltage

57*4 The horn is not activated Battery voltage

Ground Horn relay control Output
(V) The horn is activated 0V
58 Ignition switch OFF or ACC 0V
(Y)*7 Ground Ignition relay power supply Output
Ignition switch ON Battery voltage
(LG)*8

59 Ignition switch OFF or ACC 0V

Ground Ignition relay power supply Output
(GR) Ignition switch ON Battery voltage

60 Ignition switch OFF or ACC 0V

Ground Ignition relay power supply Output
(SB) Ignition switch ON Battery voltage
61
Ground ECM power supply Output Ignition switch OFF Battery voltage
(O)
NOTE:
• *1: With front fog lamp system
• *2: Halogen type headlamp with headlamp aiming control system (manual)
• *3: MR engine and QR engine models
• *4: With vehicle security system or panic alarm system
• *5: With headlamp washer system
• *6: M9R engine models
• *7: M/T models
• *8: Except M/T models

Revision: 2009 October PCS-20 T31

 IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
< ECU DIAGNOSIS INFORMATION > [IPDM E/R]
Wiring Diagram - IPDM E/R - INFOID:0000000005545949

PCS

JCMWM1894GB
P

Revision: 2009 October PCS-21 T31

 IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
< ECU DIAGNOSIS INFORMATION > [IPDM E/R]

JCMWM5085GB

Revision: 2009 October PCS-22 T31

 IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
< ECU DIAGNOSIS INFORMATION > [IPDM E/R]

PCS

JCMWM5086GB

Revision: 2009 October PCS-23 T31

 IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
< ECU DIAGNOSIS INFORMATION > [IPDM E/R]

JCMWM1897GB

Fail-safe INFOID:0000000005545950

CAN COMMUNICATION CONTROL

When CAN communication with ECM and BCM is impossible, IPDM E/R performs fail-safe control. After CAN
communication recovers normally, it also returns to normal control.
If no CAN communication is available with ECM

Revision: 2009 October PCS-24 T31

 IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
< ECU DIAGNOSIS INFORMATION > [IPDM E/R]

Control part Fail-safe in operation A

• The cooling fan relay-1, the cooling fan relay-2, the cooling fan relay-3 and the cooling
fan relay-5 turn ON when the ignition switch is turned ON
Cooling fan • The cooling fan relay-1, the cooling fan relay-2, the cooling fan relay-3 and the cooling
B
fan relay-5 turn OFF when the ignition switch is turned OFF
• Cooling fan relay-4 OFF
A/C compressor A/C relay OFF
C
If no CAN communication is available with BCM

Control part Fail-safe in operation D

• The headlamp low relay turns ON when the ignition switch is turned ON
Headlamp • The headlamp low relay turns OFF when the ignition switch is turned OFF
• Headlamp high relay OFF
E
• Parking lamps
• License plate lamps • The tail lamp relay turns ON when the ignition switch is turned ON
• Tail lamps • The tail lamp relay turns OFF when the ignition switch is turned OFF
• Illuminations F
• The status just before activation of fail-safe control is maintained until the ignition switch
is turned OFF while the front wiper is operating at LO or HI speed.
Front wiper • The front wiper is operated at LO speed until the ignition switch is turned OFF if the fail- G
safe control is activated while the front wiper is set in the INT mode and the front wiper
motor is operating.
Front fog lamps Front fog lamp relay OFF
H
Starter motor Starter relay OFF
Rear window defogger Rear window defogger relay OFF

Headlamp washer*1 Headlamp washer relay OFF I

Horn*2 Horn relay OFF

NOTE: J
• *1: With headlamp washer system
• *2: With vehicle security system or panic alarm

IGNITION RELAY MALFUNCTION DETECTION FUNCTION K

• IPDM E/R monitors status of ignition relay by the voltage at ignition relay contact circuit inside it.
• IPDM E/R judges that the ignition relay is error, if status of the ignition relay and ignition switch ON signal
(CAN). L
• If the ignition relay cannot turn OFF due to contact seizure, it activates the tail lamp relay for 10 minutes to
alert the user to the ignition relay malfunction when the ignition switch is turned OFF.
PCS
Detection
IPDM E/R judgment Operation
Ignition switch ON signal Ignition relay
ON ON Ignition relay normal — N
OFF OFF Ignition relay normal —
OFF ON Ignition relay ON stuck Turn on the tail lamp relay for 10 minutes
ON OFF Ignition relay OFF stuck Detect DTC “B2099: IGN RELAY OFF” O

FRONT WIPER CONTROL

IPDM E/R detects the front wiper stop position with the front wiper auto stop signal. P
When the front wiper auto stop signal is in the conditions listed below, IPDM E/R repeats a front wiper 10 sec-
onds operation and 20 seconds stop five times.

Revision: 2009 October PCS-25 T31

 IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
< ECU DIAGNOSIS INFORMATION > [IPDM E/R]

Ignition switch Front wiper switch Front wiper auto stop signal
The front wiper auto stop signal (stop posi-
OFF
tion) cannot be input for 10 seconds.
ON
The front wiper auto stop signal does not
ON
change for 10 seconds.
NOTE:
This operation status can be confirmed on the IPDM E/R “Data Monitor” that displays “BLOCK” for the item
“WIP PROT” while the wiper is stopped.
DTC Index INFOID:0000000005545951

CONSULT display Fail-safe TimingNOTE Reference page

No DTC is detected.
further testing — — — —
may be required.
U1000: CAN COMM CIRCUIT × CRNT PAST PCS-13
B2099: IGN RELAY OFF — CRNT PAST PCS-14
NOTE:
The details of time display are as follows.
• CRNT: The malfunctions that are detected now.
• PAST: The number is indicated when it is normal at present and a malfunction was detected in the past.

Revision: 2009 October PCS-26 T31

 PRECAUTIONS
< PRECAUTION > [IPDM E/R]

PRECAUTION A
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT B
PRE-TENSIONER" INFOID:0000000005545952

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along C
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the “SRS AIR BAG” and
“SEAT BELT” of this Service Manual.
WARNING: D
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer. E
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SRS AIR BAG”.
F
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness connectors.
G
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the H
ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s)
with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly
causing serious injury.
• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the I
battery, and wait at least 3 minutes before performing any service.

PCS

Revision: 2009 October PCS-27 T31

 IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
< REMOVAL AND INSTALLATION > [IPDM E/R]

REMOVAL AND INSTALLATION

IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE
ROOM)
Exploded View INFOID:0000000005545953

JPMIA0314ZZ

1. IPDM E/R 2. IPDM E/R bracket 3. IPDM E/R cover A

4. IPDM E/R cover B 5. Harness cover A 6. Fuse and fusible link block cover
7. Harness cover B

Removal and Installation INFOID:0000000005545954

CAUTION:
IPDM E/R integrated relays are not serviceable parts, and must not be removed from the unit.
REMOVAL
1. Remove air duct (inlet). Refer to EM-25, "Exploded View" (MR20DE), EM-150, "Exploded View"
(QR25DE), EM-265, "Exploded View" (M9R).
2. Remove battery. Refer to PG-131, "Exploded View".
3. Remove IPDM E/R (1) while pushing and opening pawls (A).
4. Disconnect connectors from IPDM E/R.

JPMIA0315ZZ

Revision: 2009 October PCS-28 T31

 IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
< REMOVAL AND INSTALLATION > [IPDM E/R]
5. Remove fuse and fusible link block cover.
6. Unlock all pawls (A) of IPDM E/R bracket, and remove IPDM E/ A
R bracket (1).

JPMIA0316ZZ
D

7. Unlock pawls of IPDM E/R cover A, harness cover A and harness cover B, remove them.
8. Disconnect connectors connected to fuse and fusible link block upper side, and remove fuse and fusible E
link block.
9. Remove IPDM E/R cover B mounting bolts (A) and battery cable
fixed clip (B), and remove IPDM E/R cover B (1). F

JPMIA0317ZZ

I
INSTALLATION
Install in the reverse order of removal.

PCS

Revision: 2009 October PCS-29 T31