Infiniti G37 Coupe. Manual - part 862

 

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Infiniti G37 Coupe. Manual - part 862

 

 

LAN

M&A BRANCH LINE CIRCUIT

LAN-121

< COMPONENT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

M&A BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000001679483

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 

MWI-50, "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 

MWI-162, "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 (

)

Connector No.

Terminal No.

M67

56

72

Approx. 54 – 66

LAN-122

< COMPONENT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

STRG BRANCH LINE CIRCUIT

STRG BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000001679484

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-83, "Wiring Dia-

gram - BRAKE CONTROL SYSTEM -"

.

Is the inspection result normal?

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

BRC-105, "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 (

)

Connector No.

Terminal No.

M37

1

2

Approx. 54 – 66

LAN

ADP BRANCH LINE CIRCUIT

LAN-123

< COMPONENT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

ADP BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000001679485

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).

-

Models with automatic drive positioner

Driver seat control unit

Harness connector B502

Harness connector B11

-

Models without automatic drive positioner

Driver seat control unit

Harness connector B501

Harness connector B10

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-63, "DRIVER SEAT

CONTROL UNIT : Diagnosis Procedure"

.

Is the inspection result normal?

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

ADP-236, "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 (

)

Connector No.

Terminal No.

B503

3

19

Approx. 54 – 66

LAN-124

< COMPONENT DIAGNOSIS >

[CAN SYSTEM (TYPE 4)]

RAS BRANCH LINE CIRCUIT

RAS BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000001679486

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 4WAS main control unit for damage, bend and loose connec-
tion (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 4WAS main control unit.

2.

Check the resistance between the 4WAS main control unit harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the 4WAS main control unit branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the 4WAS main control unit. Refer to 

STC-134, "Diagnosis

Procedure (4WAS Main Control Unit)"

.

Is the inspection result normal?

YES (Present error)>>Replace the 4WAS main control unit. Refer to 

STC-178, "Exploded View"

.

YES (Past error)>>Error was detected in the 4WAS main control unit branch line.
NO

>> Repair the power supply and the ground circuit.

4WAS main control unit harness connector

Resistance (

)

Connector No.

Terminal No.

B54

1

8

Approx. 54 – 66

 

 

 

 

 

 

 

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