Infiniti QX56 (Z62). Manual - part 207

CCS

C1A06 OPERATION SW

CCS-95

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

C

D

E

F

G

H

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A

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair the harnesses or connectors.

4.

CHECK SPIRAL CABLE

Check for continuity between spiral cable terminals. 

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace the spiral cable. 

5.

PERFORM SELF-DIAGNOSIS OF ECM

1.

Connect the connectors of ICC steering switch and ECM connector. 

2.

Turn the ignition switch ON.

3.

Perform “All DTC Reading”. 

4.

Check if any DTC is detected in “Self Diagnostic Result” of “ENGINE”. 

Is any DTC detected?

YES

>> Perform self-diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer

to 

EC-98, "DTC Index"

.

NO

>> Replace the ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

. 

Component Inspection

INFOID:0000000006224318

1.

CHECK ICC STEERING SWITCH

Check resistance between ICC steering switch terminals. 

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the steering wheel.

Spiral cable

Ground

Continuity

Connector

Terminal

M33

25

Not existed

32

Spiral cable

Continuity

Terminal

13

25

Existed

16

32

Terminal

Switch operation

Resistance 

[

Ω

]

13

16

When pressing MAIN switch

Approx. 0

When pressing dynamic driver assistance 
switch

Approx. 267

When pressing CANCEL switch

Approx. 615

When pressing DISTANCE switch

Approx. 

1090

When pressing SET/COAST switch

Approx. 

1805

When pressing RESUME/ACCELERATE 
switch

Approx. 

2985

When all switches are not pressed

Approx. 

5415

JSOIA0319GB

CCS-96

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

C1A12 LASER BEAM OFF CENTER

C1A12 LASER BEAM OFF CENTER

ADAS CONTROL UNIT

ADAS CONTROL UNIT : DTC Logic

INFOID:0000000006224319

DTC DETECTION LOGIC

ADAS CONTROL UNIT : Diagnosis Procedure

INFOID:0000000006224320

1.

CHECK ICC SENSOR SELF-DIAGNOSIS RESULTS

1.

Perform “All DTC Reading” with CONSULT-III.

2.

Check if the “C1A12” is detected as the current malfunction in “Self Diagnostic Result” of “LASER”.

Is “C1A12” detected?

YES

>> Refer to 

CCS-96, "ICC SENSOR : DTC Logic"

.

NO

>> GO TO 2.

2.

CHECK ADAS CONTROL SELF-DIAGNOSIS RESULTS

Check if the “C1A12” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.

Is “C1A12” detected?

YES

>> Replace ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

.

NO

>> INSPECTION END

ICC SENSOR

ICC SENSOR : DTC Logic

INFOID:0000000006224321

DTC DETECTION LOGIC

ICC SENSOR : Diagnosis Procedure

INFOID:0000000006224322

1.

ADJUST LASER BEAM AIMING

1.

Adjust the laser beam aiming with CONSULT-III. Refer to 

CCS-72, "Description"

. 

2.

Perform “All DTC Reading”. 

3.

Check if the “C1A12” is detected in “Self Diagnostic Result” of “LASER”. 

Is “C1A12” detected?

YES

>> Replace ICC sensor. Refer to 

CCS-176, "Exploded View"

. 

NO

>> INSPECTION END

DTC

(On board dis-

play)

Trouble diagnosis name

DTC detecting condition

Possible causes

C1A12

(12)

LASER BEAM OFFCNTR

Laser beam of ICC sensor is off the aiming 
point

Laser beam is off the aiming point

DTC

Trouble diagnosis name

DTC detecting condition

Possible causes

C1A12

LASER BEAM OFFCNTR

Laser beam of ICC sensor is off the aiming 
point

Laser beam is off the aiming point

CCS

C1A13 STOP LAMP RELAY

CCS-97

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

C

D

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C1A13 STOP LAMP RELAY

DTC Logic

INFOID:0000000006224323

DTC DETECTION LOGIC

NOTE:
If DTC “C1A13” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to 

CCS-145,

"ADAS CONTROL UNIT : DTC Logic"

. 

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE (1)

1.

Start the engine.

2.

Perform the active test item “STOP LAMP” with CONSULT-III. 

3.

Perform “All DTC Reading”. 

4.

Check if the “C1A13” is detected as the current malfunction in the “Self Diagnostic Result” of “ICC/ADAS”. 

Is “C1A13” detected as the current malfunction?

YES

>> Refer to 

CCS-97, "Diagnosis Procedure"

.

NO

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE (2)

1.

Drive at the vehicle speed of 40 km/h (25 MPH) or more for approximately 60 seconds or more without the
brake pedal depressed. 

CAUTION:

Always drive safely. 
NOTE:
If it is outside the above condition, repeat step 1. 

2.

Perform “All DTC Reading”. 

3.

Check if the “C1A13” is detected as the current malfunction in the “Self Diagnostic Result” of “ICC/ADAS”. 

Is “C1A13” detected as the current malfunction?

YES

>> Refer to 

CCS-97, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

. 

Diagnosis Procedure

INFOID:0000000006224324

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “C1A13” in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “U1000” detected?

YES

>> Perform the CAN communication system inspection. Repair or replace the malfunctioning parts.

Refer to 

CCS-145, "ADAS CONTROL UNIT : DTC Logic"

. 

NO

>> GO TO 2.

2.

CHECK STOP LAMP SWITCH

Check that “STOP LAMP SW” operate normally in “DATA MONITOR” of “ICC/ADAS”. 

DTC

(On board dis-

play)

Trouble diagnosis name

DTC detecting condition

Possible causes

C1A13

(13)

STOP LAMP RLY FIX

• Stop lamp inactive state continues for 0.3 

seconds or more despite the outputting of 
an ICC sensor ICC brake hold relay drive 
signal

• The stop lamp remains ON for 60 seconds 

or more under the following conditions:

- Driving at 40 km/h or more
- No stop lamp drive signal output from ICC 

sensor

- No brake operation

• Stop lamp switch circuit
• ICC brake switch circuit
• ICC brake hold relay circuit
• Stop lamp switch
• ICC brake switch
• ICC brake hold relay
• Incorrect stop lamp switch installation
• Incorrect ICC brake switch installation
• ECM
• ABS actuator and electric unit (control 

unit)

CCS-98

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

C1A13 STOP LAMP RELAY

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> GO TO 3.

3.

CHECK STOP LAMP SWITCH INSTALLATION

1.

Turn ignition switch OFF.

2.

Check stop lamp switch for correct installation. Refer to 

BR-7, "Inspection and Adjustment"

. 

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Adjust stop lamp switch installation. Refer to 

BR-7, "Inspection and Adjustment"

. 

4.

CHECK STOP LAMP SWITCH

1.

Disconnect stop lamp switch connector. 

2.

Check stop lamp switch. Refer to 

CCS-93, "Component Inspection (Stop Lamp Switch)"

. 

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace stop lamp switch. 

5.

CHECK STOP LAMP FOR ILLUMINATION

1.

Turn the ignition switch OFF.

2.

Check that the stop lamp is illuminated by depressing the brake pedal to turn the stop lamp ON. 

3.

Remove ICC brake hold relay. 

Is the inspection result normal?

YES

>> GO TO6.

NO

>> Check the stop lamp circuit, and repair or replace the malfunctioning parts. 

6.

CHECK HARNESS BETWEEN STOP LAMP SWITCH AND ECM

1.

Turn the ignition switch OFF.

2.

Disconnect stop lamp switch, ECM, rear combination lamp, and high-mounted stop lamp connectors. 

3.

Check for continuity between the stop lamp switch harness connector and the ECM harness connector. 

4.

Check for continuity between stop lamp switch harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair the harnesses or connectors.

7.

CHECK ICC BRAKE HOLD RELAY CIRCUIT

1.

Connect ICC brake hold relay. 

2.

Disconnect the stop lamp switch connector. 

3.

Check that the stop lamp does not illuminate when brake pedal is not depressed. 

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> GO TO 8.

8.

CHECK ICC BRAKE HOLD RELAY

1.

Remove ICC brake hold relay

2.

Check ICC hold relay. Refer to 

CCS-102, "Component Inspection"

. 

Is the inspection result normal?

Stop lamp switch

ECM

Continuity

Connector

Terminal

Connector

Terminal

E115

2

E80

158

Existed

Stop lamp switch

Ground

Continuity

Connector

Terminal

E115

2

Not existed