Infiniti FX35, FX50 (S51). Manual - part 1325

LAN-242

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 7)]

MAIN LINE BETWEEN DLC AND M&A CIRCUIT

DTC/CIRCUIT DIAGNOSIS

MAIN LINE BETWEEN DLC AND M&A CIRCUIT

Diagnosis Procedure

INFOID:0000000005577110

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-243

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 7)]

C

D

E

F

G

H

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J

K

L

B

A

O

P

N

MAIN LINE BETWEEN M&A AND ADP CIRCUIT

Diagnosis Procedure

INFOID:0000000005577111

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

LAN-244

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 7)]

MAIN LINE BETWEEN ADP AND ABS CIRCUIT

MAIN LINE BETWEEN ADP AND ABS CIRCUIT

Diagnosis Procedure

INFOID:0000000005577115

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 B1

-

Harness connector M7

-

Harness connector M6

-

Harness connector E106

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 B1 and M7.

2.

Check the continuity between the harness connector terminals.

Is the inspection result normal?

YES

>> GO TO 3.

NO

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

3.

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Disconnect the harness connectors M6 and E106.

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 M7 and M6.

4.

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.

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 driver seat control unit and the ABS actu-

ator and electric unit (control unit). 

Connector No.

Terminal No.

Continuity

B1

82

80

Existed

83

81

Existed

Harness connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M7

82

M6

47

Existed

83

48

Existed

Harness connector

ABS actuator and electric unit (control unit)

harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

E106

47

E41

35

Existed

48

14

Existed

LAN

MAIN LINE BETWEEN ADP AND ABS CIRCUIT

LAN-245

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 7)]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

NO

>> Repair the main line between the harness connector E106 and the ABS actuator and electric unit

(control unit).