Infiniti FX35, FX50 (S51). Manual - part 363

CCS-272

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

C1A34 COMMAND ERROR

C1A34 COMMAND ERROR

Description

INFOID:0000000005501883

ICC sensor integrated unit transmits the command signal required for the ECM control via CAN communica-
tion. 

DTC Logic

INFOID:0000000005501884

DTC DETECTION LOGIC

NOTE:
If DTC “C1A34” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to 

CCS-313, "ICC

SENSOR INTEGRATED UNIT : DTC Logic"

. 

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start the engine.

2.

Operate the ICC system and drive. 

CAUTION:

Always drive safely. 

3.

Stop the vehicle.

4.

Perform “All DTC Reading” with CONSULT-III. 

5.

Check if the “C1A34” is detected as the current malfunction in self-diagnosis results of “ICC”. 

Is “C1A34” detected as the current malfunction?

YES

>> Refer to 

CCS-272, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-36, "Intermittent Incident"

. 

Diagnosis Procedure

INFOID:0000000005501885

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “C1A34” in “Self Diagnostic Result” of “ICC”. 

Is “U1000” detected?

YES

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

Refer to 

CCS-313, "ICC SENSOR INTEGRATED UNIT : DTC Logic"

. 

NO

>> Replace the ICC sensor integrated unit. Refer to 

CCS-380, "Exploded View"

. 

Special Repair Requirement

INFOID:0000000005501886

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"

. 

DTC

(On board dis-

play)

Trouble diagnosis name

DTC detecting condition

Possible causes

C1A34

(34)

COMMAND ERROR

If an error occurs in the command signal that 
ICC sensor integrated unit transmits to ECM 
via CAN communication

ICC sensor integrated unit

CCS

C1A34 COMMAND ERROR

CCS-273

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

>> GO TO 2.

2.

CHECK DCA SYSTEM

1.

Erase the “self-diagnosis results”, and then perform “All DTC Reading” again after performing the action
test. (Refer to 

CCS-191, "ACTION TEST : Description"

 for action test.)

2.

Check that the DCA system is normal. 

>> WORK END

CCS-274

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

C1A35 ACCELERATOR PEDAL ACTUATOR

C1A35 ACCELERATOR PEDAL ACTUATOR

Description

INFOID:0000000005501887

• The accelerator pedal actuator is integrated into the accelerator pedal assembly. 
• The accelerator pedal actuator consists of the control unit and motor. 

DTC Logic

INFOID:0000000005501888

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000005501889

1.

PERFORM THE SELF-DIAGNOSIS

1.

Start the engine.

2.

Turn the DCA system ON. 

3.

Perform “All DTC Reading” with CONSULT-III. 

4.

Check if the “C1A35” is detected as the current malfunction in self-diagnosis results of “ICC”. 

Is “C1A35” detected as the current malfunction?

YES

>> Replace the accelerator pedal assembly. 

NO

>> INSPECTION END

Special Repair Requirement

INFOID:0000000005501890

DESCRIPTION

The accelerator pedal released position learning is necessary when the following operation is performed. 
• Disconnection and connection of accelerator pedal assembly connector
• Replace accelerator pedal assembly

SPECIAL REPAIR REQUIREMENT

1.

ACCELERATOR PEDAL RELEASED POSITION LEARNING

Perform the accelerator pedal released position learning. Refer to 

EC-25, "ACCELERATOR PEDAL

RELEASED POSITION LEARNING : Description"

 (VQ35HR) or 

EC-581, "ACCELERATOR PEDAL

RELEASED POSITION LEARNING : Description"

 (VK50VE). 

>> GO TO 2.

2.

CHECK DCA SYSTEM

1.

Erase the “self-diagnosis results”, and then perform “All DTC Reading” again after performing the action
test. (Refer to 

CCS-191, "ACTION TEST : Description"

 for action test.)

2.

Check that the DCA system is normal. 

>> WORK END

DTC

(On board dis-

play)

Trouble diagnosis 

name

DTC detecting condition

Possible causes

C1A35

(35)

APA CIR

If the accelerator pedal actuator is malfunc-
tioning

Accelerator pedal actuator

CCS

C1A36 ACCELERATOR PEDAL ACTUATOR CAN COMM

CCS-275

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

C1A36 ACCELERATOR PEDAL ACTUATOR CAN COMM

Description

INFOID:0000000005501891

• ITS communication is a multiplex communication system. This enables the system to transmit and receive

large quantities of data at high speed by connecting ICC sensor integrated unit, brake booster control unit,
and accelerator pedal actuator with 2 communication lines.

• ITS communication lines adopt twisted-pair line style (two lines twisted) for noise immunity.

DTC Logic

INFOID:0000000005501892

DTC DETECTION LOGIC

NOTE:
If DTC “C1A36” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to 

CCS-313, "ICC

SENSOR INTEGRATED UNIT : DTC 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 “C1A36” is detected as the current malfunction in self-diagnosis results of “ICC”. 

Is “C1A36” detected as the current malfunction?

YES

>> Refer to 

CCS-275, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-36, "Intermittent Incident"

. 

Diagnosis Procedure

INFOID:0000000005501893

1.

CHECK ICC SENSOR INTEGRATED UNIT SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “C1A36” in “Self Diagnostic Result” of “ICC”. 
Is “U1000” detected?

YES

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

Refer to 

CCS-313, "ICC SENSOR INTEGRATED UNIT : DTC Logic"

. 

NO

>> GO TO 2.

2.

CHECK ACCELERATOR PEDAL ACTUATOR SELF-DIAGNOSIS RESULTS

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

YES

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

CCS-362, "DTC Index"

.

NO

>> Replace the ICC sensor integrated unit. Refer to 

CCS-380, "Exploded View"

. 

Special Repair Requirement

INFOID:0000000005501894

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
Check the operation after performing the accelerator pedal released position learning when the following oper-
ation is performed. 

DTC

(On board dis-

play)

Trouble diagnosis name

DTC detecting condition

Possible causes

C1A36

(36)

APA CAN COMM CIR

If an error occurs in the signal that the accel-
erator pedal actuator transmits via ITS com-
munication

• ICC sensor integrated unit
• Accelerator pedal actuator
• ITS communication system