Infiniti QX56 (Z62). Manual - part 216

CCS

C1F05 ACCELERATOR PEDAL ACTUATOR POWER SUPPLY CIRCUIT

CCS-131

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

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C1F05 ACCELERATOR PEDAL ACTUATOR POWER SUPPLY CIRCUIT

DTC Logic

INFOID:0000000006224378

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Turn the DCA system ON. 

3.

Perform “All DTC Reading” with CONSULT-III. 

4.

Check if the “C1F05” is detected as the current malfunction on the self-diagnosis results of “ICC/ADAS”. 

Is “C1F05” detected as the current malfunction?

YES

>> Refer to 

CCS-131, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

.

Diagnosis Procedure

INFOID:0000000006224379

1.

CHECK ADAS CONTROL UNIT SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “C1F05” in “Self Diagnostic Result” of “ICC/ADAS”. 
Is “U1000” detected?

YES

>> Perform the CAN communication system inspection. Repair or replace the malfunctioning parts.

Refer to 

CCS-145, "ADAS CONTROL UNIT : DTC Logic"

. 

NO

>> GO TO 2.

2.

CHECK ACCELERATOR PEDAL ACTUATOR SELF-DIAGNOSIS RESULTS

Check if “C1F05” is detected in “Self Diagnostic Result” of “ACCELE PEDAL ACT”. 
Is “C1F05” detected?

YES

>> Refer to 

DAS-171, "ACCELERATOR PEDAL ACTUATOR : DTC Logic"

. 

NO

>> Replace the ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

. 

DTC

(On board 

display)

Trouble diagnosis name

DTC detecting condition

Possible causes

C1F05

(95)

APA PWR SUPLY CIR

The battery voltage sent to accelerator pedal 
actuator remains less than 7.9 V or more than 
19.3 V for 5 seconds

• Harness, connector, or fuse
• Accelerator pedal actuator

CCS-132

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

U0104 ADAS CAN 1

U0104 ADAS CAN 1

DTC Logic

INFOID:0000000006224380

DTC DETECTION LOGIC

NOTE:
If DTC “U0104” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to 

CCS-145, "ICC

SENSOR : DTC 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 “U0104” is detected as the current malfunction in “Self Diagnostic Result” of “LASER”. 

Is “U0104” detected as the current malfunction?

YES

>> Refer to 

CCS-132, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

. 

Diagnosis Procedure

INFOID:0000000006224381

1.

CHECK ICC SENSOR SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “U0104” in “Self Diagnostic Result” of “LASER”. 
Is “U1000” detected?

YES

>> Perform the CAN communication system inspection. Repair or replace the malfunctioning parts.

Refer to 

CCS-145, "ICC SENSOR : DTC Logic"

. 

NO

>> GO TO 2.

2.

CHECK ADAS CONTROL UNIT SELF-DIAGNOSIS RESULTS

Check if any DTC 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

CCS-50, "DTC Index"

. 

NO

>> Replace the ICC sensor. Refer to 

CCS-176, "Exploded View"

. 

DTC

Trouble diagnosis name

DTC detecting condition

Possible causes

U0104

ADAS CAN CIR 1

If ICC sensor detects an error signal that is re-
ceived from ADAS control unit via ITS commu-
nication

ADAS control unit

CCS

U0121 VDC CAN 2

CCS-133

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

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U0121 VDC CAN 2

ADAS CONTROL UNIT

ADAS CONTROL UNIT : DTC Logic

INFOID:0000000006224382

DTC DETECTION LOGIC

NOTE:
If DTC “U0121” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to 

CCS-145,

"ADAS CONTROL UNIT : DTC 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 “U0121” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “U0121” detected as the current malfunction?

YES

>> Refer to 

CCS-133, "ADAS CONTROL UNIT : Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

. 

ADAS CONTROL UNIT : Diagnosis Procedure

INFOID:0000000006224383

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “U0121” in “Self Diagnostic Result” of “ICC/ADAS”. 

Is “U1000” detected?

YES

>> Perform the CAN communication system inspection. Repair or replace the malfunctioning parts.

Refer to 

CCS-145, "ADAS CONTROL UNIT : DTC Logic"

. 

NO

>> GO TO 2.

2.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS RESULTS

Check if any DTC is detected in “Self Diagnostic Result” of “ABS”. 

Is any DTC detected?

YES

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

BRC-51, "DTC Index"

. 

NO

>> Replace the ADAS control unit. Refer to 

DAS-63, "Removal and Installation"

. 

ICC SENSOR

ICC SENSOR : DTC Logic

INFOID:0000000006224384

DTC DETECTION LOGIC

NOTE:
If DTC “U0121” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to 

CCS-145, "ICC

SENSOR : DTC Logic"

. 

DTC

(On board dis-

play)

Trouble diagnosis name

DTC detecting condition

Possible causes

U0121

(127)

VDC CAN CIR2

If ADAS control unit detects an error signal 
that is received from ABS actuator and electric 
unit (control unit) via CAN communication

ABS actuator and electric unit (control 
unit)

DTC

Trouble diagnosis name

DTC detecting condition

Possible causes

U0121

VDC CAN CIR2

If ICC sensor detects an error signal that is re-
ceived from ABS actuator and electric unit 
(control unit) via ADAS control unit

ABS actuator and electric unit (control 
unit)

CCS-134

< DTC/CIRCUIT DIAGNOSIS >

[ICC]

U0121 VDC CAN 2

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 “U0121” is detected as the current malfunction in “Self Diagnostic Result” of “LASER”. 

Is “U0121” detected as the current malfunction?

YES

>> Refer to 

CCS-134, "ICC SENSOR : Diagnosis Procedure"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

. 

ICC SENSOR : Diagnosis Procedure

INFOID:0000000006224385

1.

CHECK ICC SENSOR SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “U0121” in “Self Diagnostic Result” of “LASER”. 

Is “U1000” detected?

YES

>> Perform the CAN communication system inspection. Repair or replace the malfunctioning parts.

Refer to 

CCS-145, "ICC SENSOR : DTC Logic"

. 

NO

>> GO TO 2.

2.

CHECK ADAS CONTROL UNIT SELF-DIAGNOSIS RESULTS

Check if any DTC 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

CCS-145, "ADAS CONTROL UNIT : DTC Logic"

. 

NO

>> Replace the ICC sensor. Refer to 

CCS-176, "Exploded View"

.