Infiniti G37 Coupe. Manual - part 311

 

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Infiniti G37 Coupe. Manual - part 311

 

 

CCS

C1A15 GEAR POSITION

CCS-57

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

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C1A15 GEAR POSITION

Description

INFOID:0000000001606904

ICC sensor integrated unit judges gear positions according to the following signals.
• A/T turbine revolution signal transmitted from TCM with CAN communication. 
• Gear ratio calculated from current gear position signal transmitted from TCM with CAN communication.
• Gear ratio calculated from vehicle speed signal transmitted from ABS actuator and electronic unit (control

unit) with CAN communication

NOTE:
If DTC C1A15 is detected along with DTC U1000, C1A03 or C1A04, first diagnose the DTC U1000, C1A03 or
C1A04.
• DTC U1000: Refer to 

CCS-79, "Diagnosis Procedure"

.

• DTC C1A03: Refer to 

CCS-30, "Diagnosis Procedure"

.

• DTC C1A04: Refer to 

CCS-32, "Diagnosis Procedure"

.

DTC Logic

INFOID:0000000001606905

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000001606906

1.

PERFORM SELF-DIAGNOSIS OF ICC SENSOR INTEGRATED UNIT

1.

Perform self-diagnosis of ICC sensor integrated unit.

2.

Check if DTC “VHCL SPEED SE CIRC [C1A03]” (DTC 3), “ABS/TCS/VDC CIRC [C1A04]” (DTC 4) or
“CAN COMM CIRCUIT [U1000]” (DTC100) other than “GEAR POSITION [C1A15]” (DTC 15) 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 9.

3.

CHECK VEHICLE SPEED SIGNAL

With CONSULT-III

1.

Start engine.

2.

With “Data Monitor” of “ICC”, check if “VHCL SPEED SE” operates normally.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 8.

4.

CHECK SHIFT GEAR POSITION 

Check if gear positions are correct in A/T.
Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

DTC No.

(On board 

display)

Trouble diagnosis name

DTC detecting condition

Possible cause

C1A15

(15)

GEAR POSITION

When a mismatch occurs between an A/T tur-
bine revolution signal transmitted from TCM 
with CAN communication and a vehicle speed 
signal transmitted from ABS actuator and elec-
tric unit (control unit)

• A/T turbine revolution sensor
• TCM
• Wheel sensor
• ABS actuator and electric unit (control 

unit)

CCS-58

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

C1A15 GEAR POSITION

5.

CHECK TCM GEAR POSITION SIGNAL 

With CONSULT-III

With “Data Monitor” of “A/T”, check if “GEAR” operates normally.
Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 7.

6.

CHECK TCM TURBINE REVOLUTION 

With CONSULT-III

With “Data Monitor” of “A/T”, check if “TURBINE REV” operates normally.

Is the inspection result normal?

YES

>> GO TO 8.

NO

>> GO TO 7.

7.

PERFROM SELF-DIAGNOSIS OF TCM

1.

Perform self-diagnosis of TCM.

2.

Check if DTC is detected. Refer to 

TM-186, "DTC Index"

.

3.

Repair or replace applicable item.

>> GO TO 9.

8.

REPLACE ICC SENSOR INTEGARTED 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 9.

9.

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

CCS

C1A16 RADAR STAIN

CCS-59

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

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C1A16 RADAR STAIN

Description

INFOID:0000000001606907

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

DTC Logic

INFOID:0000000001606908

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000001606909

1.

VISUAL INSPECTION 1

Check ICC sensor integrated unit body window for contamination and foreign materials.
Is it found?

YES

>> GO TO 2.

NO

>> GO TO 3.

2.

REMOVE DIRT AND FOREIGN OBJECTS

Remove any stain and foreign materials from the ICC sensor integrated unit body window. 

>> GO TO 6.

3.

VISUAL INSPECTION 2

Check ICC sensor integrated unit body window for cracks and scratches.
Is it found?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

ASKING COMPLAINTS 

1.

Ask if there is any trace of contamination or foreign material on ICC sensor integrated unit.

2.

Ask if vehicle was driven in snow or ICC sensor integrated unit was frosted.

3.

Ask if ICC sensor integrated unit was fogged temporarily. (Front window glass may have also tended to be
fogged.)

Is there any symptom?

YES

>> Explain difference in displays between contamination detection result and current indication to

customer, and tell them “This is not malfunction”.

NO

>> GO TO 5.

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.

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)"

).

DTC No.

(On board 

display)

Trouble diagnosis 

name

DTC detecting condition

Possible cause

C1A16

(16)

RADAR STAIN

If any stain occurs to ICC sensor integrated unit 
body window.

Stain or foreign materials is deposited

CCS-60

< COMPONENT DIAGNOSIS >

[INTELLIGENT CRUISE CONTROL]

C1A16 RADAR STAIN

2.

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

>> INSPECTION END

 

 

 

 

 

 

 

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