Infiniti FX35, FX50 (S51). Manual - part 365

CCS-280

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

C1A38 ACCELERATOR PEDAL ACTUATOR CAN 1

• Replacement of ICC sensor integrated unit
Check the operation after performing the accelerator pedal released position learning when the following oper-
ation is performed.
• Disconnection and connection of accelerator pedal position sensor connector
• Replace accelerator pedal assembly

SPECIAL REPAIR REQUIREMENT

CHECK CONTROL UNIT REPLACED, REMOVED AND/OR INSTALLED

Perform the adjustment work after the replacement or removal and installation of ICC sensor integrated unit,
replacement of accelerator pedal assembly, or disconnection or connection of accelerator pedal position sen-
sor connector.

Which is replaced, removed or installed?

ICC sensor integrated unit>>GO TO 2.
Accelerator pedal assembly>>GO TO 3.

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 4.

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 4.

CHECK DCA SYSTEM

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.)

Check that the DCA system is normal.

>> WORK END

CCS

C1A39 STEERING ANGLE SENSOR

CCS-281

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

C1A39 STEERING ANGLE SENSOR

Description

INFOID:0000000005501903

It measures the rotation amount, rotation speed, and rotation direction of steering wheel, and then transmits
them to ICC sensor integrated unit via CAN communication.

DTC Logic

INFOID:0000000005501904

DTC DETECTION LOGIC

NOTE:
If DTC “C1A39” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to

CCS-313, "ICC

SENSOR INTEGRATED UNIT : DTC Logic"

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

Start the engine.

Turn the DCA system ON.

Perform “All DTC Reading” with CONSULT-III.

Check if the “C1A39” is detected as the current malfunction in self-diagnosis results of “ICC”.

Is “C1A39” detected as the current malfunction?

YES

>> Refer to

CCS-281, "Diagnosis Procedure"

>> Refer to

GI-36, "Intermittent Incident"

Diagnosis Procedure

INFOID:0000000005501905

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “C1A39” 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"

>> GO TO 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-119, "DTC Index"

>> Replace the ICC sensor integrated unit. Refer to

CCS-380, "Exploded View"

Special Repair Requirement

INFOID:0000000005501906

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

LASER BEAM AIMING ADJUSTMENT OF ICC SENSOR INTEGRATED UNIT

DTC

(On board dis-

play)

Trouble diagnosis name

DTC detecting condition

Possible causes

C1A39

(39)

STRG SEN CIR

If the steering angle sensor is malfunction

Steering angle sensor is malfunction

CCS-282

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

C1A39 STEERING ANGLE SENSOR

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

CCS-13, "LASER BEAM AIMING

ADJUSTMENT : Description"

>> GO TO 2.

CHECK DCA SYSTEM

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.)

Check that the DCA system is normal.

>> WORK END

CCS

C1A40 SYSTEM SWITCH CIRCUIT

CCS-283

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

C1A40 SYSTEM SWITCH CIRCUIT

Description

INFOID:0000000005501907

IBA OFF SWITCH

• The IBA ON/OFF operation is performed by IBA OFF switch.
• The IBA OFF switch signal is input to the brake booster control unit and transmits from the brake booster

control unit to the ICC sensor integrated unit via ITS communication.

DTC Logic

INFOID:0000000005501908

DTC DETECTION LOGIC

NOTE:
If DTC “C1A40” is displayed along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to

CCS-313,

"ICC SENSOR INTEGRATED UNIT : DTC Logic"

DTC CONFIRMATION PROCEDURE

PERFORM DTC CONFIRMATION PROCEDURE

Start the engine and wait for approximately 10 minutes or more.

Perform “All DTC Reading” with CONSULT-III.

Check if the “C1A40” is detected as the current malfunction in “Self Diagnostic Result” of “ICC”.