Infiniti G37 Coupe. Manual - part 308

CCS

C1A06 OPERATION SW

CCS-45

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

1.

Turn ignition switch OFF.

2.

Disconnect ICC steering switch connector.

3.

Check ICC steering switch. Refer to 

CCS-46, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 6.

6.

REPLACE ICC STEERING SWITCH

Replace ICC steering switch. 

>> GO TO 12.

7.

CHECK ICC STEERING SWITCH SIGNAL CIRCUIT

1.

Disconnect spiral cable connector and ECM connector.

2.

Check continuity between spiral cable harness connector and ECM harness connector. 

3.

Check continuity between spiral cable harness connector and ground. 

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> GO TO 8.

8.

REPAIR OR REPLACE HARNESS BETWEEN SPIRAL CABLE AND ECM

Repair or replace harness between spiral cable and ECM.

>> GO TO 12.

9.

CHECK COMBINATION SWITCH (SPIRAL CABLE)

Check continuity between spiral cable terminals. 

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> GO TO 10.

10.

REPLACE SPIRAL CABLE

Replace spiral cable.

>> GO TO 12.

11.

PERFORM SELF-DIAGNOSIS OF ECM

1.

Perform self-diagnosis of ECM.

Spiral cable

ECM

Continuity

Connector

Terminal Connector

Terminal 

M36

25

M107

101

Existed

32

108

Spiral cable

Ground

Continuity

Connector

Terminal 

M36

25

Not existed

32

M36

M303

Continuity

Terminal Terminal 

25

13

Existed

32

16

CCS-46

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

C1A06 OPERATION SW

2.

Repair or replace applicable item. Refer to 

EC-552, "DTC Index"

.

>> GO TO 12.

12.

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:0000000001606893

1.

CHECK ICC STEERING SWITCH

Check resistance between terminals by pressing each switch.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace ICC steering switch.

Terminal

Switch

Condition

Resistance [

Ω

]

13

16

MAIN

Pressed

Approx. 0

Released

Approx. 5456

CANCEL

Pressed

Approx. 309

Released

Approx. 5456

DISTANCE

Pressed

Approx. 741

Released

Approx. 5456

SET/COAST

Pressed

Approx. 1406

Released

Approx. 5456

RESUME/ACCELERATE 

Pressed

Approx. 2586

Released

Approx. 5456

JSOIA0069GB

CCS

C1A12 LASER BEAM OFF CENTER

CCS-47

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

C1A12 LASER BEAM OFF CENTER

Description

INFOID:0000000001606894

ICC sensor integrated unit irradiates laser beam, and receives reflected laser beam to measure distance from
preceding vehicle.

DTC Logic

INFOID:0000000001606895

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000001606896

1.

ADJUST LASER BEAM AIMING

1.

Adjust laser beam aiming. Refer to 

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

Requirement (Preparation)"

.

2.

Erase DTC.

3.

Activate the vehicle-to-vehicle distance control mode.

4.

Perform self-diagnosis of ICC sensor integrated unit.

5.

Check if DTC “LASER BEAM OFFCNTR [C1A12]” (DTC 12) is detected.

Is any DTC detected?

YES

>> GO TO 2.

NO

>> INSPECTION END

2.

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 3.

3.

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

DTC No.

(On board 

display)

Trouble diagnosis name

DTC detecting condition

Possible cause

C1A12

(12)

LASER BEAM OFFCNTR

Laser beam of ICC sensor integrated unit is off 
the aiming point.

Laser beam aiming

CCS-48

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

C1A13 STOP LAMP RELAY

C1A13 STOP LAMP RELAY

Description

INFOID:0000000001606897

The ICC brake hold relay activates the stop lamp by the stop lamp drive signal (ICC brake hold relay signal)
outputted by the ICC sensor integrated unit (Only in the vehicle-to-vehicle distance control mode). 
NOTE:
If DTC C1A13 is displayed along with DTC U1000, first diagnose the DTC U1000. Refer to 

CCS-79,

"Diagnosis Procedure"

.

DTC Logic

INFOID:0000000001606898

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000001606899

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 “STOP LAMP RLY FIX [C1A13]”
(DTC 13) 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 42.

3.

CHECK CONNECTOR OF ECM

1.

Turn ignition switch OFF.

2.

Disconnect ECM connector, and connect it securely again. 

3.

Erase DTC.

4.

Activate the vehicle-to-vehicle distance control mode and drive the vehicle following the preceding vehi-
cle.

5.

Perform self-diagnosis of ICC sensor integrated unit.

6.

Check if DTC “STOP LAMP RLY FIX [C1A13]” (DTC 13) 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.

DTC No.

(On board 

display)

Trouble diagnosis name

DTC detecting condition

Possible cause

C1A13

(13)

STOP LAMP RLY FIX

• If the stop lamp is not activated even though 

the ICC sensor integrated unit is transmitting 
a stop lamp drive signal (ICC brake hold relay 
signal).

• If the stop lamp is activated even though the 

ICC sensor integrated unit is not transmitting 
a stop lamp drive signal (ICC brake hold relay 
signal).

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

unit)