Infiniti QX56 (Z62). Manual - part 204

CCS

C1A00 CONTROL UNIT

CCS-83

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

DTC/CIRCUIT DIAGNOSIS

C1A00 CONTROL UNIT

ADAS CONTROL UNIT

ADAS CONTROL UNIT : DTC Logic

INFOID:0000000006227990

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/ADAS”. 

Is “C1A00” detected as the current malfunction?

YES

>> Refer to 

CCS-83, "ADAS CONTROL UNIT : Diagnosis Procedure"

.

NO

>> INSPECTION END

ADAS CONTROL UNIT : Diagnosis Procedure

INFOID:0000000006227991

1.

CHECK SELF-DIAGNOSIS RESULTS

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

Is any DTC detected?

YES

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

DAS-38, "DTC Index"

.

NO

>> Replace the ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

. 

ICC SENSOR

ICC SENSOR : DTC Logic

INFOID:0000000006224302

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 “LASER”.

Is “C1A00” detected as the current malfunction?

YES

>> Refer to 

CCS-83, "ICC SENSOR : Diagnosis Procedure"

.

NO

>> INSPECTION END

ICC SENSOR : Diagnosis Procedure

INFOID:0000000006224303

1.

CHECK SELF-DIAGNOSIS RESULTS

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

DTC

(On board dis-

play)

Trouble diagnosis name

DTC detecting condition

Possible causes

C1A00

(0)

CONTROL UNIT

ADAS control unit internal malfunction

ADAS control unit

DTC

Trouble diagnosis name

DTC detecting condition

Possible causes

C1A00

CONTROL UNIT

ICC sensor internal malfunction

ICC sensor

CCS-84

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

C1A00 CONTROL UNIT

Is any DTC detected?

YES

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

CCS-55, "DTC Index"

.

NO

>> Replace the ICC sensor. Refer to 

CCS-176, "Exploded View"

.

CCS

C1A01 POWER SUPPLY CIRCUIT 1, C1A02 POWER SUPPLY CIRCUIT 2

CCS-85

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

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

ADAS CONTROL UNIT

ADAS CONTROL UNIT : DTC Logic

INFOID:0000000006227992

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/
ADAS”. 

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

YES

>> Refer to 

CCS-85, "ADAS CONTROL UNIT : Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

. 

ADAS CONTROL UNIT : Diagnosis Procedure

INFOID:0000000006227993

1.

CHECK ADAS CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT

Check power supply and ground circuit of ADAS control unit. Refer to 

DAS-62, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> Replace the ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

. 

NO

>> Repair or replace the malfunctioning parts. 

ICC SENSOR

ICC SENSOR : DTC Logic

INFOID:0000000006224306

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
“LASER”.

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

YES

>> Refer to 

CCS-86, "ICC SENSOR : Diagnosis Procedure"

.

DTC

(On board dis-

play)

Trouble diagnosis 

name

DTC detecting condition

Possible causes

C1A01

(1)

POWER SUPPLY 
CIR

The battery voltage sent to ADAS control unit re-
mains less than 7.9 V for 5 seconds

• Connector, harness, fuse
• ADAS control unit

C1A02

(2)

POWER SUPPLY 
CIR 2

The battery voltage sent to ADAS control unit re-
mains more than 19.3 V for 5 seconds

DTC

Trouble diagnosis 

name

DTC detecting condition

Possible causes

C1A01

POWER SUPPLY 
CIR

The battery voltage sent to ICC sensor remains 
less than 7.9 V for 5 seconds

• Connector, harness, fuse
• ICC sensor

C1A02

POWER SUPPLY 
CIR 2

The battery voltage sent to ICC sensor remains 
more than 19.3 V for 5 seconds

CCS-86

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

C1A01 POWER SUPPLY CIRCUIT 1, C1A02 POWER SUPPLY CIRCUIT 2

NO

>> Refer to 

GI-40, "Intermittent Incident"

.

ICC SENSOR : Diagnosis Procedure

INFOID:0000000006224307

1.

CHECK ICC SENSOR POWER SUPPLY AND GROUND CIRCUIT

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

CCS-158, "ICC SENSOR : Diagnosis Proce-

dure"

.

Is the inspection result normal?

YES

>> Replace the ICC sensor. Refer to 

CCS-176, "Exploded View"

.

NO

>> Repair or replace the malfunctioning parts.