Infiniti G37 Coupe. Manual - part 310

CCS

C1A13 STOP LAMP RELAY

CCS-53

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

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2.

Check stop lamp switch for proper installation. Refer to 

BR-7, "Inspection and Adjustment"

.

Is the inspection result normal?

YES

>> GO TO 33.

NO

>> GO TO 32.

32.

ADJUST STOP LAMP SWITCH

Adjust stop lamp switch. Refer to 

BR-7, "Inspection and Adjustment"

.

>> GO TO 42.

33.

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 35.

NO

>> GO TO 34.

34.

REPLACE STOP LAMP SWITCH

Replace stop lamp switch.

>> GO TO 42.

35.

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 37.

NO

>> GO TO 36.

36.

REPAIR OR REPLACE STOP LAMP SWITCH HARNESS OR FUSE

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

>> GO TO 42.

37.

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

Is the inspection result normal?

OK

>> GO TO 39.

NG

>> GO TO 38.

Terminals

Voltage

(Approx.)

(+)

(–)

Stop lamp switch 
connector

Terminal

E110

3

Ground

Battery voltage

Stop lamp switch

ABS actuator and electric unit 

(control unit)

Continuity

Connector

Terminal Connector

Terminal

E110

4

E41

30

Existed

CCS-54

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

C1A13 STOP LAMP RELAY

38.

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 42.

39.

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 40.

40.

REPAIR OR REPLACE APPLICABLE ITEM

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

>> GO TO 42.

41.

REPLACE ICC SENSOR UNTEGRATED 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 42.

42.

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

INFOID:0000000001606900

1.

CHECK ICC BRAKE HOLD RELAY

Check continuity between ICC brake hold relay terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ICC brake hold relay.

terminals

condition

Continuity

3

5

Applying battery voltage to between ter-
minals 1 and 2

Existed

No battery voltage 

Not existed

JSOIA0075GB

CCS

C1A14 ECM

CCS-55

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

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C1A14 ECM

Description

INFOID:0000000001606901

• ECM transmits the accelerator pedal position signal, ICC brake switch signal, stop lamp switch signal and

ICC steering switch signal, etc. to the ICC sensor integrated unit with CAN communication. 

• ECM controls the electronic control throttle based on the engine torque demand received from the ICC sen-

sor integrated unit with CAN communication. 

NOTE:
If DTC C1A14 is detected along with DTC U1000, first diagnose the DTC U1000. Refer to 

CCS-79,

"Diagnosis Procedure"

.

DTC Logic

INFOID:0000000001606902

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000001606903

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) other than “ECM CIRCUIT [C1A14]” (DTC 14)
is detected.

Is any DTC detected?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

CAN COMMUNICATION INSPECTION

Perform the CAN communication system inspection. Repair or replace the applicable item. Refer to 

CCS-79,

"Diagnosis Procedure"

.

>> GO TO 6.

3.

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 4.

NO

>> GO TO 5.

4.

REPAIR OR REPLACE APPLICABLE ITEM

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

>> GO TO 6.

5.

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 6.

DTC No.

(On board 

display)

Trouble diagnosis name

DTC detecting condition

Possible cause

C1A14

(14)

ECM CIRCUIT

If an abnormal condition occurs with ECM.

• Accelerator pedal position sensor
• ECM
• ICC sensor integrated unit

CCS-56

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

C1A14 ECM

6.

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