Infiniti M35/M45 Y50. Manual — part 15

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

ACS-53

[ICC]

C

D

E

F

G

H

I

J

L

M

A

B

ACS

13.

CHECK ICC SENSOR INTEGRATED UNIT STANDARD VOLTAGE

With CONSULT-II

1.

Connect ICC sensor integrated unit connector.

2.

Turn ignition switch ON.

3.

Perform “ACTIVE TEST” (“STOP LAMP”: “STP LMP DRIVE
ON”) with CONSULT-II, check voltage between ICC brake hold
relay harness connector and ground.

OK or NG

OK

>> GO TO 14.

NG

>> 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.

14.

CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT

1.

Turn ignition switch ON.

2.

Check voltage between ICC brake hold relay harness connector
and ground.

OK or NG

OK

>> GO TO 15.

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

Condition

Voltage

(Approx.)

(+)

(–)

ICC brake hold
relay connector

Terminal

E80

2 Ground

During

“ACTIVE TEST”

12 V

PKIB9342E

Terminals

Voltage

(Approx.)

(+)

(–)

ICC brake hold relay
connector

Terminal

E80

3 Ground

Battery

voltage

PKIB9343E

ACS-54

[ICC]

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

15.

CHECK HARNESS BETWEEN ICC BRAKE HOLD RELAY AND ECM

1.

Turn ignition switch OFF.

2.

Disconnect ECM connector.

3.

Check continuity between ICC brake hold relay harness connec-
tor (A) and ECM harness connector (B).

4.

Check continuity between ICC brake hold relay harness connec-
tor (A) and ground.

OK or NG

OK

>> GO TO 16.

NG

>> 1. Repair harness between ICC brake hold relay and ECM.

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

again.

16.

CHECK ICC BRAKE HOLD RELAY

With CONSULT-II

1.

Connect ECM connector and ICC brake hold relay.

2.

Disconnect stop lamp switch connector.

3.

Perform “ACTIVE TEST” (“STOP LAMP”) with CONSULT-II, and make sure that stop lamp is illuminated.

OK or NG

OK

>> GO TO 17.

NG

>> 1. Replace ICC brake hold relay.

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

again.

17.

CHECK STOP LAMP SWITCH WITH ABS DATA MONITOR

With CONSULT-II

With “ABS” “DATA MONITOR”, check if “STOP LAMP SW” are operates normally.

OK or NG

OK

>> GO TO 18.

NG

>> GO TO 20.

18.

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

>> GO TO 19.

A

B

Continuity

Connector

Terminal Connector

Terminal

E80

5

M71

101

Yes

A

Ground

Continuity

Connector

Terminal

E80

5

No

PKIB9344E

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

ACS-55

[ICC]

C

D

E

F

G

H

I

J

L

M

A

B

ACS

19.

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.

20.

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 21.

NG

>> 1. Adjust stop lamp switch.

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

again.

21.

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 22.

NG

>> 1. Replace stop lamp switch.

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

again.

22.

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 23.

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.)

(+)

(–)

Stop lamp switch
connector

Terminal

E124

3

Ground

Battery voltage

PKIC0833E

ACS-56

[ICC]

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

23.

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.

DTC 14 ECM CIRCUIT

NKS004D8

1.

PERFORM ICC SENSOR INTEGRATED UNIT SELF-DIAGNOSIS

1.

Perform self-diagnosis.

2.

Check if “CAN COMM CIRCUIT [U1000]” (DTC 100) other than “ECM CIRCUIT [C1A14]” (DTC 14) is indi-
cated 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.

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.

A

B

Continuity

Connector

Terminal Connector

Terminal

E124

4

E30

30

Yes

A

Ground

Continuity

Connector

Terminal

E124

4

No

PKIC0834E