Infiniti FX35, FX50 (S51). Manual - part 1284

LAN-78

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

E-SUS BRANCH LINE CIRCUIT

E-SUS BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000005241917

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 E-SUS 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 E-SUS control unit.

2.

Check the resistance between the E-SUS control unit harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the E-SUS control unit branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the E-SUS control unit. Refer to 

SCS-41, "Diagnosis Proce-

dure"

.

Is the inspection result normal?

YES (Present error)>>Replace the E-SUS control unit. Refer to 

SCS-61, "Exploded View"

.

YES (Past error)>>Error was detected in the E-SUS control unit branch line.
NO

>> Repair the power supply and the ground circuit.

E-SUS control unit harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

B38

32

29

Approx. 54 – 66

LAN

RAS BRANCH LINE CIRCUIT

LAN-79

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

C

D

E

F

G

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J

K

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B

A

O

P

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RAS BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000005241918

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 RAS 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 RAS control unit.

2.

Check the resistance between the RAS control unit harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the RAS control unit branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

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

STC-81, "Diagnosis Proce-

dure"

.

Is the inspection result normal?

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

STC-109, "Removal and Installation"

.

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

>> Repair the power supply and the ground circuit.

RAS control unit harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

B37

1

8

Approx. 54 – 66

LAN-80

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

CGW BRANCH LINE CIRCUIT (CAN COMMUNICATION CIRCUIT 1)

CGW BRANCH LINE CIRCUIT (CAN COMMUNICATION CIRCUIT 1)

Diagnosis Procedure

INFOID:0000000005241919

1.

CHECK DTC

Check DTC of the CAN gateway with CONSULT-III.
Is U1010 or B2600 indicated?

YES

>> Perform a diagnosis of the indicated DTC.

NO

>> GO TO 2.

2.

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 CAN gateway for damage, bend and loose connection (unit
side and connector side).

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the terminal and connector.

3.

CHECK HARNESS FOR OPEN CIRCUIT

1.

Disconnect the connector of CAN gateway.

2.

Check the resistance between the CAN gateway harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 4.

NO

>> Repair the CAN gateway branch line (CAN communication circuit 1).

4.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the CAN gateway. Refer to 

LAN-106, "Diagnosis Proce-

dure"

.

Is the inspection result normal?

YES (Present error)>>Replace the CAN gateway. Refer to 

LAN-112, "Exploded View"

.

YES (Past error)>>Error was detected in the CAN gateway branch line (CAN communication circuit 1).
NO

>> Repair the power supply and the ground circuit.

CAN gateway harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

M125

1

7

Approx. 54 – 66

LAN

CGW BRANCH LINE CIRCUIT (CAN COMMUNICATION CIRCUIT 2)

LAN-81

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

CGW BRANCH LINE CIRCUIT (CAN COMMUNICATION CIRCUIT 2)

Diagnosis Procedure

INFOID:0000000005241920

1.

CHECK DTC

Check DTC of the CAN gateway with CONSULT-III.
Is U1010 or B2600 indicated?

YES

>> Perform a diagnosis of the indicated DTC.

NO

>> GO TO 2.

2.

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 CAN gateway for damage, bend and loose connection (unit
side and connector side).

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the terminal and connector.

3.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Disconnect the connector of CAN gateway.

2.

Check the continuity between the CAN gateway harness connector terminals.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair the CAN gateway branch line (CAN communication circuit 2).

4.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the CAN gateway. Refer to 

LAN-106, "Diagnosis Proce-

dure"

.

Is the inspection result normal?

YES (Present error)>>Replace the CAN gateway. Refer to 

LAN-112, "Exploded View"

.

YES (Past error)>>Error was detected in the CAN gateway branch line (CAN communication circuit 2).
NO

>> Repair the power supply and the ground circuit.

CAN gateway harness connector

Continuity

Connector No.

Terminal No.

M125

6

4

Existed

12

10

Existed