Infiniti M35/M45 Y50. Manual - part 13

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

ACS-45

[ICC]

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5. 

PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS

 With CONSULT-II

1.

Perform “ABS” self-diagnosis. Refer to 

BRC-23, "CONSULT-II Functions (ABS)"

 .

2.

Check if malfunction is indicated.

Is malfunction indicated?

YES

>> 1. Repair or replace applicable item.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

NO

>> 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

6. 

CHECK ICC BRAKE SWITCH INSTALLATION AND ADJUSTMENT 

Check ICC brake switch for proper installation, and adjust the switch if necessary. Refer to 

BR-6, "BRAKE

PEDAL"

 .

OK or NG

OK

>> GO TO 7.

NG

>> 1. Adjust ICC brake switch.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

7. 

CHECK ICC BRAKE SWITCH

Check ICC brake switch. Refer to 

ACS-69, "ICC Brake Switch and Stop Lamp Switch"

 .

OK or NG

OK

>> GO TO 8.

NG

>> 1. Replace ICC brake switch.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

8. 

CHECK ICC BRAKE SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ICC brake switch connector.

3.

Turn ignition switch ON.

4.

Check voltage between ICC brake switch harness connector
and ground.

OK or NG

OK

>> GO TO 9.

NG

>> 1. Repair or replace harness or fuse.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

Terminals

Voltage

(Approx.)

(+)

(–)

ICC brake switch 
connector

Terminal

E111

1 Ground

Battery 

voltage

PKIB9335E

ACS-46

[ICC]

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

9. 

CHECK HARNESS BETWEEN ICC BRAKE SWITCH AND ECM

1.

Turn ignition switch OFF.

2.

Disconnect ECM connector.

3.

Check continuity between ICC brake switch harness connector
(A) and ECM harness connector (B).

4.

Check continuity between ICC brake switch harness connector
(A) and ground.

OK or NG

OK

>> GO TO 10.

NG

>> 1. Repair or replace harness between ICC brake switch and ECM.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

10. 

PERFORM ECM SELF-DIAGNOSIS

 With CONSULT-II

1.

Perform “ENGINE” self-diagnosis. Refer to 

EC-123, "CONSULT-II Function (ENGINE)"

  (for VQ35DE) or

EC-826, "CONSULT-II Function (ENGINE)"

  (for VK45DE).

2.

Check if malfunction is indicated.

Is malfunction indicated?

YES

>> 1. Repair or replace applicable item.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

NO

>> 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

11. 

CHECK STOP LAMP SWITCH INSTALLATION AND ADJUSTMENT 

Check stop lamp switch for proper installation, and adjust the switch if necessary. Refer to 

BR-6, "BRAKE

PEDAL"

 .

OK or NG

OK

>> GO TO 12.

NG

>> 1. Adjust stop lamp switch.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

12. 

CHECK STOP LAMP SWITCH

Check stop lamp switch. Refer to 

ACS-69, "ICC Brake Switch and Stop Lamp Switch"

 .

OK or NG

OK

>> GO TO 13.

NG

>> 1. Replace stop lamp switch.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

A

B

Continuity

Connector

Terminal Connector

Terminal

E111

2

M71

108

Yes

A

Ground

Continuity

Connector

Terminal 

E111

2

No

PKIB9336E

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

ACS-47

[ICC]

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13. 

CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect stop lamp switch connector.

3.

Turn ignition switch ON.

4.

Check voltage between stop lamp switch harness connector and
ground.

OK or NG

OK

>> GO TO 14.

NG

>> 1. Repair or replace harness or fuse.

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

14. 

CHECK HARNESS BETWEEN STOP LAMP SWITCH AND ABS ACTUATOR AND ELECTRIC UNIT 

(CONTROL UNIT)

1.

Turn ignition switch OFF.

2.

Disconnect ABS actuator and electric unit (control unit) connector.

3.

Check continuity between stop lamp switch harness connector
(A) and ABS actuator and electric unit (control unit) harness
connector (B).

4.

Check continuity between stop lamp switch harness connector
(A) and ground.

OK or NG

OK

>> 1. Perform “ABS” self-diagnosis. Refer to 

BRC-23, "CONSULT-II Functions (ABS)"

 .

2. After repairing or replacing applicable item, erase DTC and perform ICC system running test.

Then perform self-diagnosis of ICC system again.

NG

>> 1. Repair or replace harness between stop lamp switch and ABS actuator and electric unit (control

unit).

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

Terminals

Voltage

(Approx.)

(+)

(–)

Stop lamp switch 
connector

Terminal

E124

3

Ground

Battery voltage

PKIC0833E

A

B

Continuity

Connector

Terminal Connector

Terminal

E124

4

E30

30

Yes

A

Ground

Continuity

Connector

Terminal 

E124

4

No

PKIC0834E

ACS-48

[ICC]

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

DTC 6 OPERATION SW CIRC

NKS004D5

1. 

PERFORM ICC SENSOR INTEGRATED UNIT SELF-DIAGNOSIS

1.

Perform self-diagnosis.

2.

Check if “CAN COMM CIRCUIT [U1000]” (DTC 100) other than “OPERATION SW CIRC [C1A06]” (DTC
6) is indicated in self-diagnosis item in the display.

Is it indicated?

YES

>> 1. CAN communication inspection. Refer to 

ACS-61, "DTC 100 CAN COMM CIRCUIT"

 .

2. After repairing or replacing applicable item, erase DTC and perform ICC system running test.

Then perform self-diagnosis of ICC system again.

NO

>> GO TO 2.

2. 

CHECK CONNECTOR FOR ECM

1.

Turn ignition switch OFF.

2.

Disconnect ECM connector, and connect it securely again. 

3.

Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.

4.

Check if “OPERATION SW CIRC [C1A06]” (DTC 6) is indicated in self-diagnosis item in the display.

Is it indicated?

YES

>> GO TO 3.

NO

>> Poor connector connection

1. Check connector. (Check connector housing for disconnected, loose, bent, and collapsed ter-

minals. If any malfunction is detected, repair applicable part.)

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.

3. 

CHECK ICC STEERING SWITCH

1.

Turn ignition switch OFF.

2.

Check ICC steering switch. Refer to 

ACS-69, "ICC Steering Switch"

 .

OK or NG

OK

>> GO TO 4.

NG

>> 1. Replace ICC steering switch. 

2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system

again.