Infiniti FX35, FX50 (S51). Manual - part 308

 

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Infiniti FX35, FX50 (S51). Manual - part 308

 

 

CCS-52

< SYSTEM DESCRIPTION >

[ICC (FULL SPEED RANGE)]

DIAGNOSIS SYSTEM (ICC SENSOR INTEGRATED UNIT)

The test is finished in 10 seconds after starting. 

JPOIA0061GB

CCS

C1A00 CONTROL UNIT

CCS-53

< DTC/CIRCUIT DIAGNOSIS >

[ICC (FULL SPEED RANGE)]

C

D

E

F

G

H

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J

K

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M

B

N

P

A

DTC/CIRCUIT DIAGNOSIS

C1A00 CONTROL UNIT

Description

INFOID:0000000005501573

ICC sensor integrated unit function description
• It detects the reflected light from the vehicle ahead by irradiating a laser forward. It calculates the vehicle dis-

tance from and relative speed with the vehicle ahead depending on the detected signal. 

• It calculates the target vehicle distance and the target vehicle speed depending on the signals from various

sensors and switches, outputs the engine torque demand to ECM via CAN communication, and outputs the
brake fluid pressure command signal to the brake booster control unit via ITS communication. 

DTC Logic

INFOID:0000000005501574

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Perform “All DTC Reading” with CONSULT-III. 

3.

Check if the “C1A00” is detected as the current malfunction in “Self Diagnostic Result” of “ICC”. 

Is “C1A00” detected as the current malfunction?

YES

>> Refer to 

CCS-53, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005501575

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if any DTC other than “C1A00” is detected in “Self Diagnostic Result” of “ICC”. 
Is any DTC detected?

YES

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

CCS-162, "DTC Index"

.

NO

>> Replace the ICC sensor integrated unit. Refer to 

CCS-184, "Exploded View"

Special Repair Requirement

INFOID:0000000005501576

DESCRIPTION

Perform the action test after adjusting the laser beam aiming of ICC sensor integrated unit when the following
operation is performed. 
• Removal and installation of ICC sensor integrated unit
• Replacement of ICC sensor integrated unit

SPECIAL REPAIR REQUIREMENT

1.

LASER BEAM AIMING ADJUSTMENT OF ICC SENSOR INTEGRATED UNIT

Adjust the laser beam aiming of the ICC sensor integrated unit. Refer to 

CCS-13, "LASER BEAM AIMING

ADJUSTMENT : Description"

>> GO TO 2.

DTC

(On board dis-

play)

Trouble diagnosis name

DTC detecting condition

Possible causes

C1A00

(0)

CONTROL UNIT

ICC sensor integrated unit internal malfunc-
tion

ICC sensor integrated unit

CCS-54

< DTC/CIRCUIT DIAGNOSIS >

[ICC (FULL SPEED RANGE)]

C1A00 CONTROL UNIT

2.

CHECK ICC SYSTEM

1.

Erase the “Self Diagnostic Result”, and then perform “All DTC Reading” again after performing the action
test. (Refer to 

CCS-18, "ACTION TEST : Description"

 for action test.)

2.

Check that the ICC system is normal. 

>> WORK END

CCS

C1A01 POWER SUPPLY CIRCUIT 1, C1A02 POWER SUPPLY CIRCUIT 2

CCS-55

< DTC/CIRCUIT DIAGNOSIS >

[ICC (FULL SPEED RANGE)]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

C1A01 POWER SUPPLY CIRCUIT 1, C1A02 POWER SUPPLY CIRCUIT 2

Description

INFOID:0000000005501577

The ICC sensor integrated unit controls the system with the ignition power supply. 

DTC Logic

INFOID:0000000005501578

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the MAIN switch of ICC system ON. 

3.

Perform “All DTC Reading” with CONSULT-III. 

4.

Check if the “C1A01” or “C1A02” is detected as the current malfunction in “Self Diagnostic Result” of
“ICC”. 

Is “C1A01” or “C1A02” detected as the current malfunction?

YES

>> Refer to 

CCS-55, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-36, "Intermittent Incident"

Diagnosis Procedure

INFOID:0000000005501579

1.

CHECK ICC SENSOR INTEGRATED UNIT POWER SUPPLY AND GROUND CIRCUIT

Check power supply and ground circuit of ICC sensor integrated unit. Refer to 

CCS-140, "ICC SENSOR INTE-

GRATED UNIT : Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> Replace the ICC sensor integrated unit. Refer to 

CCS-184, "Exploded View"

NO

>> Repair or replace the malfunctioning parts. 

Special Repair Requirement

INFOID:0000000005501580

DESCRIPTION

Perform the action test after adjusting the laser beam aiming of ICC sensor integrated unit when the following
operation is performed. 
• Removal and installation of ICC sensor integrated unit
• Replacement of ICC sensor integrated unit

SPECIAL REPAIR REQUIREMENT

1.

LASER BEAM AIMING ADJUSTMENT OF ICC SENSOR INTEGRATED UNIT

Adjust the laser beam aiming of the ICC sensor integrated unit. Refer to 

CCS-13, "LASER BEAM AIMING

ADJUSTMENT : Description"

>> GO TO 2.

2.

CHECK ICC SYSTEM

1.

Erase the “Self Diagnostic Result”, and then perform “All DTC Reading” again after performing the action
test. (Refer to 

CCS-18, "ACTION TEST : Description"

 for action test.)

DTC

(On board dis-

play)

Trouble diagnosis 

name

DTC detecting condition

Possible causes

C1A01

(1)

POWER SUPPLY 
CIR

ICC sensor integrated unit power supply voltage 
is excessively low (less than 8 V).

• Connector, harness, fuse
• ICC sensor integrated unit

C1A02

(2)

POWER SUPPLY 
CIR 2

ICC sensor integrated unit power supply voltage 
is excessively high (more than 19 V).

 

 

 

 

 

 

 

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