Infiniti FX35, FX50 (S51). Manual - part 1283

LAN-74

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

M&A BRANCH LINE CIRCUIT

M&A BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000005241913

1.

CHECK CONNECTOR

1.

Turn the ignition switch OFF.

2.

Disconnect the battery cable from the negative terminal.

3.

Check the terminals and connectors of the unified meter and A/C amp. for damage, bend and loose con-
nection (unit side and connector side).

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 unified meter and A/C amp.

2.

Check the resistance between the unified meter and A/C amp. harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the unified meter and A/C amp. branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the unified meter and A/C amp. Refer to 

HAC-68, "UNIFIED

METER AND A/C AMP. : Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the unified meter and A/C amp. Refer to 

HAC-179, "Exploded View"

.

YES (Past error)>>Error was detected in the unified meter and A/C amp. branch line.
NO

>> Repair the power supply and the ground circuit.

Unified meter and A/C amp. harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

M67

56

72

Approx. 54 – 66

LAN

STRG BRANCH LINE CIRCUIT

LAN-75

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

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STRG BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000005241914

1.

CHECK CONNECTOR

1.

Turn the ignition switch OFF.

2.

Disconnect the battery cable from the negative terminal.

3.

Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection
(unit side and connector side).

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 steering angle sensor.

2.

Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the steering angle sensor branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor. Refer to 

BRC-112, "Wiring Dia-

gram - BRAKE CONTROL SYSTEM -"

.

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor. Refer to 

BRC-137, "Exploded View"

.

YES (Past error)>>Error was detected in the steering angle sensor branch line.
NO

>> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

M37

1

2

Approx. 54 – 66

LAN-76

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

TPMS BRANCH LINE CIRCUIT

TPMS BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000005241915

1.

CHECK CONNECTOR

1.

Turn the ignition switch OFF.

2.

Disconnect the battery cable from the negative terminal.

3.

Check the terminals and connectors of the low tire pressure warning control unit for damage, bend and
loose connection (unit side and connector side).

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 low tire pressure warning control unit.

2.

Check the resistance between the low tire pressure warning control unit harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the low tire pressure warning control unit branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the low tire pressure warning control unit. Refer to 

WT-39,

"Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the low tire pressure warning control unit. Refer to 

WT-76, "Exploded View"

.

YES (Past error)>>Error was detected in the low tire pressure warning control unit branch line.
NO

>> Repair the power supply and the ground circuit.

Low tire pressure warning control unit harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

M96

2

1

Approx. 54 – 66

LAN

ADP BRANCH LINE CIRCUIT

LAN-77

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

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ADP BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000005241916

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).

-

Driver seat control unit

-

Harness connector B460

-

Harness connector B11

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 driver seat control unit.

2.

Check the resistance between the driver seat control unit harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the driver seat control unit branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the driver seat control unit. Refer to 

ADP-59, "DRIVER SEAT

CONTROL UNIT : Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the driver seat control unit. Refer to 

ADP-215, "Exploded View"

.

YES (Past error)>>Error was detected in the driver seat control unit branch line.
NO

>> Repair the power supply and the ground circuit.

Driver seat control unit harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

B451

3

19

Approx. 54 – 66