Infiniti M35/M45 Y50. Manual - part 11

 

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Infiniti M35/M45 Y50. Manual - part 11

 

 

TROUBLE DIAGNOSIS - GENERAL DESCRIPTION

ACS-37

[ICC]

C

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ACS

1. 

CHECK FUSE

Check if the fuse is blown.

OK or NG

OK

>> GO TO 2.

NG

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. 

2. 

CHECK ICC SYSTEM DISPLAY

Check if dot matrix LCD in the combination meter illuminates. Refer to 

DI-17, "Self-Diagnosis Mode of Combi-

nation Meter"

 .

OK or NG

OK

>> GO TO 3.

NG

>> Check combination meter. Refer to 

DI-18, "HOW TO PERFORM TROUBLE DIAGNOSIS"

 .

3. 

CHECK POWER SUPPLY CIRCUIT FOR ICC SENSOR INTEGRATED UNIT

1.

Turn ignition switch OFF.

2.

Disconnect ICC sensor integrated unit connector.

3.

Turn ignition switch ON.

4.

Check voltage between ICC sensor integrated unit harness con-
nector and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace ICC sensor integrated unit power sup-

ply harness.

4. 

CHECK GROUND CIRCUIT FOR ICC SENSOR INTEGRATED UNIT

1.

Turn ignition switch OFF.

2.

Check continuity between ICC sensor integrated unit harness
connector and ground.

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace ICC sensor integrated unit ground har-

ness.

Unit

Power source

Fuse No.

ICC sensor integrated unit

Ignition switch ON or START 

82

Terminals

Voltage

(Approx.)

(+)

(–)

ICC sensor integrated 
unit connector

Terminal 

E61

1 Ground

Battery 

voltage

PKIB8375E

ICC sensor integrated 
unit connector

Terminal 

Ground

Continuity

 E61

Yes

PKIB8376E

ACS-38

[ICC]

TROUBLE DIAGNOSIS - GENERAL DESCRIPTION

5. 

CHECK CONNECTOR FOR ICC SENSOR INTEGRATED UNIT

1.

Check terminals for bend and looseness. 

2.

Securely connect ICC sensor integrated unit connector again.

3.

Perform self-diagnosis without CONSULT-II. Refer to

ACS-35, "WITHOUT CONSULT-II"

 .

Can self-diagnosis be performed?

YES

>> Check connector. (Check connector housing for disconnected, loose, bent, and collapsed termi-

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

NO

>> GO TO 6.

6. 

CHECK ICC STEERING SWITCH

Check ICC steering switch. Refer to 

ACS-69, "ICC Steering Switch"

 .

OK or NG

OK

>> GO TO 7.

NG

>> Replace ICC steering switch.

7. 

CHECK HARNESS BETWEEN ECM AND ICC STEERING SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect ECM connector. 

3.

Check resistance between ECM harness connector.

4.

Check continuity between ECM harness connector and ground.

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace harness between ECM and ICC steer-

ing switch.

8. 

CHECK CONNECTOR FOR ECM

1.

Check terminals for bend and looseness. 

2.

Securely connect ECM connector again.

3.

Perform self-diagnosis without CONSULT-II. Refer to 

ACS-35, "WITHOUT CONSULT-II"

 .

Can self-diagnosis be performed?

YES

>> Check connector. (Check connector housing for disconnected, loose, bent, and collapsed termi-

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

NO

>> GO TO 9.

ECM

connector

Terminal 

 ECM

connector

Terminal Condition

Resis-

tance

(Approx.)

 F108

67 

 M71

99

When MAIN switch 

pressed

When MAIN switch 

released

5.5 k

PKIB8377E

ECM connector

Terminal 

Ground

Continuity

F108

67 No

M71

99 No

PKIB8378E

TROUBLE DIAGNOSIS - GENERAL DESCRIPTION

ACS-39

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ACS

9. 

CHECK CAN COMMUNICATION

1.

Perform self-diagnosis with CONSULT-II.

2.

Check if “DTC 100 CAN COMM CIRCUIT” 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

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

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

    (for

VQ35DE) or 

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

  (VK45DE).

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

Then perform self-diagnosis of ICC system again.

ACS-40

[ICC]

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

PFP:25962

Diagnostic Trouble Code (DTC) Chart

NKS004CZ

×

: Applicable

DTC 

No.

CONSULT-II 

screen terms

ICC 

system 

warning 

lamp

Fail-safe

Malfunctions detected where...

Refer-

ence 
page

Vehicle-

to-

vehicle

 distance 

control 

mode

Conven-

tional 
(fixed 

speed) 

cruise 

control 

mode

Brake 
assist 

(with 

preview 

function)

0

CONTROL UNIT

[C1A00]

×

×

×

×

ICC sensor integrated unit internal 
malfunction.

ACS-42

1

POWER SUPPLY CIR

[C1A01]

×

×

×

×

ICC sensor integrated unit power 
supply voltage is excessively low 
(less than 8V).

ACS-42

2

POWER SUPPLY CIR 2

[C1A02]

×

×

×

×

ICC sensor integrated unit power 
supply voltage is excessively high 
(more than 19V).

ACS-42

3

VHCL SPEED SE CIRC

[C1A03]

×

×

×

×

Wheel sensor malfunction.

ABS actuator and electric unit 
(control unit) malfunction.

A/T vehicle speed sensor mal-
function.

TCM malfunction.

ICC sensor integrated unit mal-
function.

ACS-43

4

ABS/TCS/VDC CIRC

[C1A04]

×

×

×

×

VDC/TCS/ABS system malfunc-
tion.

ACS-43

5

BRAKE SW/STOP L SW

[C1A05]

×

×

×

×

Stop lamp switch harness is open 
or shorted.

Stop lamp switch is stuck to OFF.

ICC brake switch or stop lamp 
switch is stuck to ON.

ECM malfunction.

ABS actuator and electric unit 
(control unit) malfunction.

ACS-44

6

OPERATION SW CIRC

[C1A06]

×

×

×

ICC steering switch harness or 
spiral cable is open or shorted.

ICC steering switch malfunction.

ACS-48

12

LASER BEAM OFFCNTR

[C1A12]

×

×

×

Laser beam of ICC sensor inte-
grated unit is off the aiming point.

ACS-49

13

STOP LAMP RLY FIX

[C1A13]

×

×

×

Normally open terminal of ICC 
brake hold relay is stuck.

Improper installation of ICC brake 
switch or stop lamp switch. 

ICC brake switch malfunction.

ECM malfunction.

ABS actuator and electric unit 
(control unit) malfunction.

ACS-50

 

 

 

 

 

 

 

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