Nissan Pathfinder (2012 year). Manual - part 455

 

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Nissan Pathfinder (2012 year). Manual - part 455

 

 

LAN-68

< WIRING DIAGRAM >

[CAN]

CAN SYSTEM

ABMIA3323GB

August 2012

2012 Pathfinder

LAN

CAN COMMUNICATION SYSTEM

LAN-69

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

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DTC/CIRCUIT DIAGNOSIS

CAN COMMUNICATION SYSTEM

Component Parts Location

INFOID:0000000007354992

1.

ECM
E7: VK engine models
E16: VQ engine models

2.

AV control unit
M48: With BOSE audio system with 
navigation system
M70: Without BOSE audio system 
without navigation system
M135: With mid audio system

3.

Combination meter M24

4.

BCM M18

5.

ABS actuator and electric unit (con-
trol unit) 
E125: VQ engine models
E127: VK engine models

6.

Transfer control unit 
M152: All-mode 4WD models
M165: Part time 4WD models

7.

Data link connector M22

8.

Steering angle sensor M47

9.

Driver seat control unit B202

10. Air bag diagnosis sensor unit M35

11. A/T assembly F9

12. A/C auto amp. M50

13. Intelligent Key unit M164

14. IPDM E/R E122

AWMIA0018ZZ

August 2012

2012 Pathfinder

LAN-70

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

MALFUNCTION AREA CHART

MALFUNCTION AREA CHART

Main Line

INFOID:0000000007354993

Branch Line

INFOID:0000000007354994

Short Circuit

INFOID:0000000007354995

Malfunction area

Reference

Main line between TCM and air bag diagnosis sensor unit

LAN-71, "Diagnosis Procedure"

Main line between air bag diagnosis sensor unit and data link 
connector

LAN-73, "Diagnosis Procedure"

Main line between data link connector and ABS actuator and 
electric unit (control unit)

LAN-74, "Diagnosis Procedure"

Malfunction area

Reference

ECM branch line circuit 

LAN-75, "Diagnosis Procedure"

TCM branch line circuit

LAN-76, "Diagnosis Procedure"

Air bag diagnosis sensor unit branch line circuit

LAN-77, "Diagnosis Procedure"

AV control unit branch line circuit

LAN-78, "Diagnosis Procedure"

Intelligent Key unit branch line circuit

LAN-79, "Diagnosis Procedure"

Transfer control unit branch line circuit 

LAN-80, "Diagnosis Procedure"

Driver seat control unit branch line circuit

LAN-81, "Diagnosis Procedure"

BCM branch line circuit 

LAN-82, "Diagnosis Procedure"

Data link connector branch line circuit 

LAN-83, "Diagnosis Procedure"

A/C auto amp. branch line circuit

LAN-84, "Diagnosis Procedure"

Combination meter branch line circuit 

LAN-85, "Diagnosis Procedure"

Steering angle sensor branch line circuit 

LAN-86, "Diagnosis Procedure"

ABS actuator and electric unit (control unit) branch line circuit 

LAN-87, "Diagnosis Procedure"

IPDM E/R branch line circuit 

LAN-88, "Diagnosis Procedure"

Malfunction area

Reference

CAN communication circuit

LAN-89, "Diagnosis Procedure"

August 2012

2012 Pathfinder

LAN

MAIN LINE BETWEEN TCM AND A-BAG CIRCUIT

LAN-71

< DTC/CIRCUIT DIAGNOSIS >

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MAIN LINE BETWEEN TCM AND A-BAG CIRCUIT

Diagnosis Procedure

INFOID:0000000007354996

1.

CHECK CONNECTOR

1. Turn the ignition switch OFF.

2. Disconnect the battery cable from the negative terminal.

3. Check the following terminals and connectors for damage, bend and loose connection (connector side

and harness side).

-

Harness connector F14

-

Harness connector E5

-

Harness connector E152

-

Harness connector M31

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1. Disconnect the following harness connectors.

-

A/T assembly

-

Harness connectors F14 and E5

2. Check the continuity between the A/T assembly harness connector and the harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the main line between the A/T assembly and the harness connector F14.

3.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1. Disconnect the harness connectors E152 and M31.

2. Check the continuity between the harness connectors.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair the main line between the harness connectors E5 and E152.

4.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check the following items again.

• Decision of CAN system type.

• Not received CONSULT data (SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR).

A/T assembly harness connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

F9

3

F14

2

Existed

8

3

Existed

Harness connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

E5

2

E152

52G

Existed

3

51G

Existed

Harness connector

Data link connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M31

52G

M22

6

Existed

51G

14

Existed

August 2012

2012 Pathfinder

LAN-72

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

MAIN LINE BETWEEN TCM AND A-BAG CIRCUIT

• Procedure for detecting root cause.

YES (Past error)>>Error was detected in the main line between the TCM and the air bag diagnosis sensor

unit.

NO

>> Repair the main line between the harness connector M31 and the air bag diagnosis sensor unit.

August 2012

2012 Pathfinder

LAN

MAIN LINE BETWEEN A-BAG AND DLC CIRCUIT

LAN-73

< DTC/CIRCUIT DIAGNOSIS >

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MAIN LINE BETWEEN A-BAG AND DLC CIRCUIT

Diagnosis Procedure

INFOID:0000000007354997

1.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1. Turn the ignition switch OFF.

2. Disconnect the battery cable from the negative terminal.

3. Disconnect the harness connectors E152 and M31.

4. Check the continuity between the harness connector and the data link connector.

Is the inspection result normal?

YES (Present error)>>Check the following items again.

• Decision of CAN system type.

• Not received CONSULT data (SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR).

• Procedure for detecting root cause.

YES (Past error)>>Error was detected in the main line between the air bag diagnosis sensor unit and the

data link connector.

NO

>> Repair the main line between the air bag diagnosis sensor unit and the data link connector.

Harness connector

Data link connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M31

52G

M22

6

Existed

51G

14

Existed

August 2012

2012 Pathfinder

LAN-74

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

MAIN LINE BETWEEN DLC AND ABS CIRCUIT

MAIN LINE BETWEEN DLC AND ABS CIRCUIT

Diagnosis Procedure

INFOID:0000000007354998

1.

CHECK CONNECTOR

1. Turn the ignition switch OFF.

2. Disconnect the battery cable from the negative terminal.

3. Check the following terminals and connectors for damage, bend and loose connection (connector side

and harness side).

-

Harness connector M91

-

Harness connector E26

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1. Disconnect the harness connectors M91 and E26.

2. Check the continuity between the data link connector and the harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the main line between the data link connector and the harness connector M91.

3.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1. Disconnect the connector of ABS actuator and electric unit (control unit).

2. Check the continuity between the harness connector and the ABS actuator and electric unit (control unit)

harness connector.

-

VQ engine models

-

VK engine models

Is the inspection result normal?

YES (Present error)>>Check the following items again.

• Decision of CAN system type.

• Not received CONSULT data (SELF-DIAG RESULTS, CAN DIAG SUPPORT MNTR).

• Procedure for detecting root cause.

YES (Past error)>>Error was detected in the main line between the data link connector and the ABS actuator

and electric unit (control unit).

NO

>> Repair the main line between the harness connector E26 and the ABS actuator and electric unit

(control unit).

Data link connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M22

6

M91

11

Existed

14

10

Existed

Harness connector

ABS actuator and electric unit (control unit)

harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

E26

11

E125

12

Existed

10

13

Existed

Harness connector

ABS actuator and electric unit (control unit)

harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

E26

11

E127

11

Existed

10

15

Existed

August 2012

2012 Pathfinder

LAN

ECM BRANCH LINE CIRCUIT

LAN-75

< DTC/CIRCUIT DIAGNOSIS >

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ECM BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000007354999

1.

CHECK CONNECTOR

1. Turn the ignition switch OFF.

2. Disconnect the battery cable from the negative terminal.

3. Check the following terminals and connectors for damage, bend and loose connection (unit side and con-

nector side).

-

ECM

-

Harness connector E2

-

Harness connector F32

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS FOR OPEN CIRCUIT

1. Disconnect the connector of ECM.

2. Check the resistance between the ECM harness connector terminals.

-

VQ engine models

-

VK engine models

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the ECM branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ECM. Refer to the following.

• VQ40DE: 

EC-94, "Diagnosis Procedure"

• VK56DE: 

EC-620, "Diagnosis Procedure"

Is the inspection result normal?

YES (Present error)>>Replace the ECM. Refer to the following.

• VQ40DE: 

EC-24, "Procedure After Replacing ECM"

• VK56DE: 

EC-596, "Procedure After Replacing ECM"

YES (Past error)>>Error was detected in the ECM branch line.

NO

>> Repair the power supply and the ground circuit.

ECM harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

E16

94

86

Approx. 108 – 132

ECM harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

E7

94

86

Approx. 108 – 132

August 2012

2012 Pathfinder

 

 

 

 

 

 

 

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