Nissan Pathfinder (2010 year). Manual - part 517

PCS

PCS-1

ELECTRICAL & POWER CONTROL

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SECTION 

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CONTENTS

POWER  CONTROL SYSTEM

IPDM E/R

BASIC INSPECTION  ....................................

2

DIAGNOSIS AND REPAIR WORKFLOW  ..........

2

Work Flow  .................................................................

2

FUNCTION DIAGNOSIS ...............................

5

RELAY CONTROL SYSTEM  ..............................

5

System Diagram ........................................................

5

System Description  ...................................................

6

Component Parts Location ........................................

7

POWER CONTROL SYSTEM .............................

8

System Diagram ........................................................

8

System Description  ...................................................

8

SIGNAL BUFFER SYSTEM  ................................

9

System Diagram ........................................................

9

System Description  ...................................................

9

POWER CONSUMPTION CONTROL SYS-
TEM ....................................................................

10

System Diagram ......................................................

10

System Description  .................................................

10

Component Parts Location ......................................

11

DIAGNOSIS SYSTEM (IPDM E/R) .....................

12

Diagnosis Description  .............................................

12

CONSULT - III Function (IPDM E/R) .......................

14

COMPONENT DIAGNOSIS  .........................

16

U1000 CAN COMM CIRCUIT  ...........................

16

Description ...............................................................

16

DTC Logic ................................................................

16

Diagnosis Procedure  ...............................................

16

POWER SUPPLY AND GROUND CIRCUIT  ....

17

Diagnosis Procedure  ...............................................

17

ECU DIAGNOSIS .........................................

18

IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM)  ................

18

Reference Value ......................................................

18

Terminal Layout .......................................................

19

Physical Values  .......................................................

20

Wiring Diagram ........................................................

24

Fail Safe ..................................................................

28

DTC Index ...............................................................

30

PRECAUTION ..............................................

31

PRECAUTIONS .................................................

31

Precaution for Supplemental Restraint System 
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .................................................................

31

Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect  ...................................

31

REMOVAL AND INSTALLATION ...............

33

IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM)  ................

33

Removal and Installation of IPDM E/R  ....................

33

2010 Pathfinder

PCS-2

< BASIC INSPECTION >

[IPDM E/R]

DIAGNOSIS AND REPAIR WORKFLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Work Flow

INFOID:0000000005260273

OVERALL SEQUENCE

DETAILED FLOW

JMKIA0101GB

2010 Pathfinder

PCS

DIAGNOSIS AND REPAIR WORKFLOW

PCS-3

< BASIC INSPECTION >

[IPDM E/R]

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1.

 GET INFORMATION FOR SYMPTOM

Get the detailed information from the customer about the symptom (the condition and the environment when

the incident/malfunction occurred).

>> GO TO 2

2.

 CHECK DTC

1. Check DTC.

2. Perform the following procedure if DTC is displayed.

-

Record DTC and freeze frame data.

-

Erase DTC.

-

Study the relationship between the cause detected by DTC and the symptom described by the customer.

3. Check related service bulletins for information.
Is any symptom described and any DTC detected?

Symptom is described, DTC is displayed>>GO TO 3

Symptom is described, DTC is not displayed>>GO TO 4

Symptom is not described, DTC is displayed>>GO TO 5

3.

 CONFIRM THE SYMPTOM

Confirm the symptom described by the customer.

Connect CONSULT-III to the vehicle in “DATA MONITOR” mode and check real time diagnosis results.

Verify relationship between the symptom and the condition when the symptom is detected.

>> GO TO 5

4.

 CONFIRM THE SYMPTOM

Confirm the symptom described by the customer.

Connect CONSULT-III to the vehicle in “DATA MONITOR” mode and check real time diagnosis results.

Verify relationship between the symptom and the condition when the symptom is detected.

>> GO TO 6

5.

 PERFORM DTC CONFIRMATION PROCEDURE

Perform DTC Confirmation Procedure for the displayed DTC, and then check that DTC is detected again.

At this time, always connect CONSULT-III to the vehicle, and check diagnostic results in real time.

NOTE:

• Freeze frame data is useful if the DTC is not detected.

• Perform Component Function Check if DTC Confirmation Procedure is not included in Service Manual. This

simplified check procedure is an effective alternative though DTC cannot be detected during this check.

If the result of Component Function Check is NG, it is the same as the detection of DTC by DTC Confirma-

tion Procedure.

Is DTC detected?

YES

>> GO TO 8

NO

>> Refer to 

GI-37, "Intermittent Incident"

.

6.

 PERFORM BASIC INSPECTION

Perform a basic inspection of the relay control system.  Refer to 

PCS-7, "Component Parts Location"

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Inspection End>>GO TO 7

7.

 DETECT MALFUNCTIONING SYSTEM BY SYMPTOM

Detect malfunctioning system according to the confirmed symptom in step 4, and determine the trouble diag-

nosis order based on possible causes and symptom.

>> GO TO 8

8.

 DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE

2010 Pathfinder

PCS-4

< BASIC INSPECTION >

[IPDM E/R]

DIAGNOSIS AND REPAIR WORKFLOW

Inspect according to Diagnostic Procedure of the system.

NOTE:

The Diagnostic Procedure described based on open circuit inspection. A short circuit inspection is also

required for the circuit check in the Diagnostic Procedure.
Is malfunctioning part detected?

YES

>> GO TO 9

NO

>> Check voltage of related BCM terminals using CONSULT-III.

9.

 REPAIR OR REPLACE THE MALFUNCTIONING PART

1. Repair or replace the malfunctioning part.

2. Reconnect parts or connectors disconnected during Diagnostic Procedure again after repair and replace-

ment.

3. Check DTC. If DTC is displayed, erase it.

>> GO TO 10

10.

 FINAL CHECK

When DTC was detected in step 2, perform DTC Confirmation Procedure or Component Function Check

again, and then check that the malfunction have been fully repaired.

When symptom was described from the customer, refer to confirmed symptom in step 3 or 4 and check that

the symptom is not detected.
Are the inspection results normal?

YES

>> Inspection End.

NO (DTC is detected)>>GO TO 8

NO (Symptom remains)>>GO TO 6

2010 Pathfinder

PCS

RELAY CONTROL SYSTEM

PCS-5

< FUNCTION DIAGNOSIS >

[IPDM E/R]

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FUNCTION DIAGNOSIS

RELAY CONTROL SYSTEM

System Diagram

INFOID:0000000005260274

AWMIA1123GB

2010 Pathfinder

PCS-6

< FUNCTION DIAGNOSIS >

[IPDM E/R]

RELAY CONTROL SYSTEM

System Description

INFOID:0000000005260275

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:

IPDM E/R integrated relays cannot be removed.

Control relay

Input/output

Transmit unit

Control part

Reference 

page

Front fog lamp relay

Front fog lamp request signal

BCM (CAN)

Front fog lamps
(if equipped)

EXL-42

• Headlamp (LH) high relay
• Headlamp (RH) high relay
• Headlamp low relay

• High beam request signal
• Low beam request signal

BCM (CAN)

• Headlamp high
• Headlamp low

EXL-38
EXL-40

Tail lamp relay

Position light request signal

BCM (CAN)

• Parking  lamps
• License plate lamps
• Tail lamps
• Trailer tow relay
• Illumination system

EXL-44

• Front wiper relay
• Front wiper high relay

Front wiper request signal

BCM (CAN)

Front wiper motor

WW-4

Rear window defogger relay

Rear window defogger request signal

BCM (CAN)

Rear window defogger

DEF-4

A/C relay

A/C request signal

• BCM  (CAN)
• ECM  (CAN)

A/C compressor

HAC-65

Starter relay

Ignition switch START signal

TCM

Starter motor

STR-8

Cooling fan relay

Cooling fan request signal

ECM (CAN)

Cooling fan relay

CO-8

Heated mirror relay

Heated mirror request signal

BCM (CAN)

Door mirrors

DEF-13

ECM relay

ECM relay control signal

ECM (CAN)

ECM relay

EC-28

Throttle control motor relay

Throttle control motor control signal

ECM (CAN)

Throttle control motor relay

EC-36

Fuel pump relay

Fuel pump request signal

ECM (CAN)

Fuel pump

EC-403

Ignition relay

Ignition switch ON signal

Ignition switch

Ignition relay

EC-39

2010 Pathfinder

PCS

RELAY CONTROL SYSTEM

PCS-7

< FUNCTION DIAGNOSIS >

[IPDM E/R]

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Component Parts Location

INFOID:0000000005260276

1.

IPDM E/R E118, E119, E120, E121, 
E122, E123, E124

ALMIA0310ZZ

2010 Pathfinder

PCS-8

< FUNCTION DIAGNOSIS >

[IPDM E/R]

POWER CONTROL SYSTEM

POWER CONTROL SYSTEM

System Diagram

INFOID:0000000005260277

System Description

INFOID:0000000005260278

COOLING FAN CONTROL

IPDM E/R controls the cooling fan according to the status of the cooling fan speed request signal received

from ECM via CAN communication. Refer to 

LAN-52, "CAN System Specification Chart"

.

ALMIA0111GB

2010 Pathfinder