Infiniti FX35, FX50 (S51). Manual - part 1279

LAN-58

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

MALFUNCTION AREA CHART

MALFUNCTION AREA CHART

System Diagram

INFOID:0000000005241893

CAN Communication Circuit

INFOID:0000000005241894

MAIN LINE

BRANCH LINE

JSMIA0144GB

Malfunction area

Reference

Main line between data link connector and unified meter and A/C 
amp.

LAN-60, "Diagnosis Procedure"

Main line between unified meter and A/C amp. and driver seat 
control unit

LAN-61, "Diagnosis Procedure"

Main line between driver seat control unit and CAN gateway

LAN-62, "Diagnosis Procedure"

Main line between CAN gateway and ABS actuator and electric 
unit (control unit)

LAN-63, "Diagnosis Procedure"

Main line between unified meter and A/C amp. and ABS actuator 
and electric unit (control unit)

LAN-64, "Diagnosis Procedure"

Main line between driver seat control unit and ABS actuator and 
electric unit (control unit)

LAN-65, "Diagnosis Procedure"

Malfunction area

Reference

ECM branch line circuit

LAN-67, "Diagnosis Procedure"

AWD control unit branch line circuit

LAN-68, "Diagnosis Procedure"

LAN

MALFUNCTION AREA CHART

LAN-59

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

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SHORT CIRCUIT

ITS Communication Circuit

INFOID:0000000005241895

BRANCH LINE

SHORT CIRCUIT OR OPEN CIRCUIT

Data link connector branch line circuit

LAN-69, "Diagnosis Procedure"

TCM branch line circuit

LAN-70, "Diagnosis Procedure"

Air bag diagnosis sensor unit branch line circuit

LAN-71, "Diagnosis Procedure"

AV control unit branch line circuit

LAN-72, "Diagnosis Procedure"

BCM branch line circuit

LAN-73, "Diagnosis Procedure"

Unified meter and A/C amp. branch line circuit

LAN-74, "Diagnosis Procedure"

Steering angle sensor branch line circuit

LAN-75, "Diagnosis Procedure"

Low tire pressure warning control unit branch line circuit

LAN-76, "Diagnosis Procedure"

Driver seat control unit branch line circuit

LAN-77, "Diagnosis Procedure"

E-SUS control unit branch line circuit

LAN-78, "Diagnosis Procedure"

RAS control unit branch line circuit

LAN-79, "Diagnosis Procedure"

CAN gateway branch line circuit (CAN communication circuit 1)

LAN-80, "Diagnosis Procedure"

CAN gateway branch line circuit (CAN communication circuit 2)

LAN-81, "Diagnosis Procedure"

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

LAN-82, "Diagnosis Procedure"

IPDM E/R branch line circuit

LAN-83, "Diagnosis Procedure"

AFS control unit branch line circuit

LAN-84, "Diagnosis Procedure"

ICC sensor integrated unit branch line circuit

LAN-85, "Diagnosis Procedure"

Lane camera unit branch line circuit

LAN-86, "Diagnosis Procedure"

Pre-crash seat belt control unit branch line circuit

LAN-87, "Diagnosis Procedure"

Malfunction area

Reference

Malfunction area

Reference

CAN communication circuit

LAN-90, "Diagnosis Procedure"

CAN communication circuit 1

LAN-92, "Diagnosis Procedure"

CAN communication circuit 2

LAN-94, "Diagnosis Procedure"

Malfunction area

Reference

Accelerator pedal actuator branch line circuit

LAN-88, "Diagnosis Procedure"

Brake booster control unit branch line circuit

LAN-89, "Diagnosis Procedure"

Malfunction area

Reference

ITS communication circuit

LAN-96, "Diagnosis Procedure"

LAN-60

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

MAIN LINE BETWEEN DLC AND M&A CIRCUIT

MAIN LINE BETWEEN DLC AND M&A CIRCUIT

Diagnosis Procedure

INFOID:0000000005241896

1.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Turn the ignition switch OFF.

2.

Disconnect the battery cable from the negative terminal.

3.

Disconnect the following harness connectors.

-

ECM

-

Unified meter and A/C amp.

4.

Check the continuity between the data link connector and the unified meter and A/C amp. harness con-
nector.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.
YES (Past error)>>Error was detected in the main line between the data link connector and the unified meter

and A/C amp. 

NO

>> Repair the main line between the data link connector and the unified meter and A/C amp.

Data link connector

Unified meter and A/C amp. harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M24

6

M67

56

Existed

14

72

Existed

LAN

MAIN LINE BETWEEN M&A AND ADP CIRCUIT

LAN-61

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

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MAIN LINE BETWEEN M&A AND ADP CIRCUIT

Diagnosis Procedure

INFOID:0000000005241897

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 M7

-

Harness connector B1

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.

-

Unified meter and A/C amp.

-

Harness connectors M7 and B1

2.

Check the continuity between the unified meter and A/C amp. harness connector and the harness con-
nector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the main line between the unified meter and A/C amp. and the harness connector M7.

3.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

Check the continuity between the harness connector terminals.

Is the inspection result normal?

YES (Present error)>>Check CAN system type decision again.
YES (Past error)>>Error was detected in the main line between the unified meter and A/C amp. and the

driver seat control unit. 

NO

>> Repair the main line between the harness connector B1 and the driver seat control unit.

Unified meter and A/C amp. harness connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M67

56

M7

80

Existed

72

81

Existed

Connector No.

Terminal No.

Continuity

B1

80

82

Existed

81

83

Existed