Infiniti G37 Coupe. Manual - part 307

CCS

C1A05 BRAKE SW/STOP LAMP SW

CCS-41

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

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>> GO TO 33.

21.

PERFORM SELF-DIAGNOSIS OF ECM

1.

Perform self-diagnosis of ECM.

2.

Check if DTC is detected. Refer to 

EC-552, "DTC Index"

.

Is any DTC detected?

YES

>> GO TO 31.

NO

>> GO TO 32.

22.

CHECK STOP LAMP SWITCH INSTALLATION

1.

Turn ignition switch OFF.

2.

Check stop lamp switch for proper installation. Refer to 

BR-7, "Inspection and Adjustment"

.

Is the inspection result normal?

YES

>> GO TO 24.

NO

>> GO TO 23.

23.

ADJUST STOP LAMP SWITCH

Adjust stop lamp switch. Refer to 

BR-7, "Inspection and Adjustment"

.

>> GO TO 33.

24.

CHECK STOP LAMP SWITCH

1.

Disconnect stop lamp switch connector.

2.

Check stop lamp switch. Refer to 

CCS-43, "Component Inspection (STOP LAMP SWITCH)"

.

Is the inspection result normal?

YES

>> GO TO 26.

NO

>> GO TO 25.

25.

REPLACE STOP LAMP SWITCH

Replace stop lamp switch.

>> GO TO 33.

26.

CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch ON.

2.

Check voltage between stop lamp switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 28.

NO

>> GO TO 27.

27.

REPAIR OR REPLACE STOP LAMP SWITCH HARNESS OR FUSE

Repair or replace stop lamp switch power supply harness or fuse.

>> GO TO 33.

28.

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.

Terminal

Voltage

(Approx.)

(+)

(–)

Stop lamp switch 
connector

Terminal

E110

3

Ground

Battery voltage

CCS-42

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

C1A05 BRAKE SW/STOP LAMP SW

3.

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

Is the inspection result normal?

YES

>> GO TO 30.

NO

>> GO TO 29.

29.

REPAIR OR REPLACE HARNESS BETWEEN STOP LAMP SWITCH AND ABS ACTUATOR AND ELEC-

TRIC UNIT (CONTROL UNIT)

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

>> GO TO 33.

30.

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

1.

Perform self-diagnosis of ABS actuator and electric unit (control unit).

2.

Check if DTC is detected. Refer to 

BRC-88, "DTC No. Index"

.

>> GO TO 31.

31.

REPAIR OR REPLACE APPLICABLE ITEM

Repair or replace the applicable item identified by the self-diagnosis result.

>> GO TO 33.

32.

REPLACE ICC SENSOR INTEGRATED UNIT

1.

Replace ICC sensor integrated unit.

2.

Adjust laser beam aiming. Refer to 

CCS-7, "LASER BEAM AIMING ADJUSTMENT : Special Repair

Requirement (Preparation)"

.

>> GO TO 33.

33.

CHECK ICC SYSTEM

1.

Erase DTC and perform ICC system action test. Then perform self-diagnosis of ICC sensor integrated
unit. (For the details on the ICC system action test, refer to 

CCS-11, "ACTION TEST : Special Repair

Requirement (Vehicle-To-Vehicle Distance Control Mode)"

).

2.

Check that no abnormal condition is present in the ICC system. 

>> INSPECTION END

Component Inspection (ICC BRAKE SWITCH)

INFOID:0000000001606887

1.

CKECK ICC BRAKE SWITCH

Check continuity between ICC brake switch terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ICC brake switch.

Stop lamp switch

ABS actuator and electric unit 

(control unit)

Continuity

Connector

Terminal Connector

Terminal

E110

4

E41

30

Existed

terminals

Condition

Continuity

1

2

When brake pedal is depressed

Not existed

When brake pedal is released

Existed

CCS

C1A05 BRAKE SW/STOP LAMP SW

CCS-43

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

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Component Inspection (STOP LAMP SWITCH)

INFOID:0000000001606888

1.

CHECK STOP LAMP SWITCH

Check continuity between stop lamp switch terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace stop lamp switch.

Component Inspection (ICC CLUTCH SWITCH)

INFOID:0000000001606889

1.

CHECK ICC CLUTCH SWITCH

Check continuity between ICC clutch switch terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ICC clutch switch.

terminals

Condition

Continuity

1

2

When brake pedal is depressed

Existed

When brake pedal is released

Not existed

3

4

When brake pedal is depressed

Existed

When brake pedal is released

Not existed

terminals

Condition

Continuity

1

2

When clutch pedal is depressed

Not existed

When clutch pedal is released

Existed

CCS-44

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

C1A06 OPERATION SW

C1A06 OPERATION SW

Description

INFOID:0000000001606890

• To activate or deactivate the ICC system and set the vehicle speed and vehicle-to-vehicle distance, use the

ICC steering switch. 

• The ICC steering switch signal is inputted to ECM. ECM transmits the data to the ICC sensor integrated unit

with CAN communication. 

NOTE:
If DTC C1A06 is detected along with DTC U1000 or U0401, first diagnose the DTC U1000 or U0401.
• DTC U1000: Refer to 

CCS-79, "Diagnosis Procedure"

.

• DTC U0401: Refer to 

CCS-73, "Diagnosis Procedure"

.

DTC Logic

INFOID:0000000001606891

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000001606892

1.

PERFORM SELF-DIAGNOSIS OF ICC SENSOR INTEGRATED UNIT

1.

Perform self-diagnosis of ICC sensor integrated unit.

2.

Check if DTC “CAN COMM CIRCUIT [U1000]” (DTC 100) or “ECM CAN CIR 1 [U0401]” (DTC 120) other
than “OPERATION SW CIRC [C1A06]” (DTC 6) is detected.

Is any DTC detected?

YES

>> GO TO 2.

NO

>> GO TO 3. 

2.

DIAGNOSIS FOR DETECTED DTC

Perform diagnosis on the detected DTC and repair or replace the applicable item. Refer to 

CCS-92, "DTC

Index"

.

>> GO TO 12.

3.

CHECK CONNECTOR OF ECM

1.

Turn ignition switch OFF.

2.

Disconnect ECM connector, and connect it securely again. 

3.

Erase DTC.

4.

Operate the ICC steering switch.

5.

Perform self-diagnosis of ICC sensor integrated unit.

6.

Check if DTC “OPERATION SW CIRC [C1A06]” (DTC 6) is detected.

Is any DTC detected?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK ECM CONNECTOR

1.

Check ECM connector housing for disconnected, loose, bent, and collapsed terminals.

2.

Repair or replace the applicable item if any DTC is found.

>> GO TO 12.

5.

CHECK ICC STEERING SWITCH

DTC No.

(On board 

display)

Trouble diagnosis name

DTC detecting condition

Possible cause

C1A06

(6)

OPERATION SW CIRC

If any abnormal condition is present in the input 
signal from the ICC steering switch.

• ICC steering switch circuit
• ICC steering switch
• ECM