Nissan Pathfinder (2010 year). Instruction — 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 . . . . . . . . .
DIAGNOSIS AND REPAIR WORKFLOW . . ..
Work Flow . . . . . . . . . . . . . . . .....
FUNCTION DIAGNOSIS . . . . . . . ...
RELAY CONTROL SYSTEM . . . . . . . ..
System Diagram . . . . . . . . . . . . . ....
System Description . . . . . . . . . . . . ...
Component Parts Location . . . . . . . . . ....
POWER CONTROL SYSTEM . . . . . . . .
System Diagram . . . . . . . . . . . . . ....
System Description . . . . . . . . . . . . ...
SIGNAL BUFFER SYSTEM . . . . . . . .
System Diagram . . . . . . . . . . . . . ....
System Description . . . . . . . . . . . . ...
POWER CONSUMPTION CONTROL SYS-
TEM . . . . . . . . . . . . . . . . .
System Diagram . . . . . . . . . . . . . ..
System Description . . . . . . . . . . . . .
Component Parts Location . . . . . . . . . ..
DIAGNOSIS SYSTEM (IPDM E/R) . . . . . .
Diagnosis Description . . . . . . . . . . . .
CONSULT - III Function (IPDM E/R) . . . . . ...
COMPONENT DIAGNOSIS . . . . . . .
U1000 CAN COMM CIRCUIT . . . . . . ...
Description . . . . . . . . . . . . . . . ...
DTC Logic . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
POWER SUPPLY AND GROUND CIRCUIT .
Diagnosis Procedure . . . . . . . . . . . ...
ECU DIAGNOSIS . . . . . . . . . . .
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) . . . .
Reference Value . . . . . . . . . . . . . ..
Terminal Layout . . . . . . . . . . . . . ...
Physical Values . . . . . . . . . . . . . ...
Wiring Diagram . . . . . . . . . . . . . .
Fail Safe . . . . . . . . . . . . . . . . ..
DTC Index . . . . . . . . . . . . . . . ...
PRECAUTION . . . . . . . . . . . ..
PRECAUTIONS . . . . . . . . . . . . .
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect . . . . . . . . ...
REMOVAL AND INSTALLATION . . . ...
IPDM E/R (INTELLIGENT POWER DISTRI-
BUTION MODULE ENGINE ROOM) . . . .
Removal and Installation of IPDM E/R . . . . .
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.
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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 Instruction. 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"
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)
• 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
Tail lamp relay
Position light request signal
BCM (CAN)
• Parking lamps
• License plate lamps
• Tail lamps
• Trailer tow relay
• Illumination system
• Front wiper relay
• Front wiper high relay
Front wiper request signal
BCM (CAN)
Front wiper motor
Rear window defogger relay
Rear window defogger request signal
BCM (CAN)
Rear window defogger
A/C relay
A/C request signal
• BCM (CAN)
• ECM (CAN)
A/C compressor
Starter relay
Ignition switch START signal
TCM
Starter motor
Cooling fan relay
Cooling fan request signal
ECM (CAN)
Cooling fan relay
Heated mirror relay
Heated mirror request signal
BCM (CAN)
Door mirrors
ECM relay
ECM relay control signal
ECM (CAN)
ECM relay
Throttle control motor relay
Throttle control motor control signal
ECM (CAN)
Throttle control motor relay
Fuel pump relay
Fuel pump request signal
ECM (CAN)
Fuel pump
Ignition relay
Ignition switch ON signal
Ignition switch
Ignition relay
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
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