Infiniti FX35, FX50 (S51). Manual — part 369

CCS-296

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

C1F07 CAN CIRCUIT1

• 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.
• 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

U0121 VDC CAN 2

CCS-297

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

U0121 VDC CAN 2

Description

INFOID:0000000005501937

ABS actuator and electric unit (control unit) transmits the VDC system signal to ICC sensor integrated unit via
CAN communication.

DTC Logic

INFOID:0000000005501938

DTC DETECTION LOGIC

NOTE:
If DTC “U0121” 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 “U0121” is detected as the current malfunction in self-diagnosis results of “ICC”.

Is “U0121” detected as the current malfunction?

YES

>> Refer to

CCS-297, "Diagnosis Procedure"

>> Refer to

GI-36, "Intermittent Incident"

Diagnosis Procedure

INFOID:0000000005501939

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “U0121” 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:0000000005501940

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

DTC

(On board dis-

play)

Trouble diagnosis name

DTC detecting condition

Possible causes

U0121

(127)

VDC CAN CIR2

If ICC sensor integrated unit detects an error
signal that is received from ABS actuator and
electric unit (control unit) via CAN communica-
tion

ABS actuator and electric unit (control
unit)

CCS-298

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

U0121 VDC CAN 2

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.

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

U0126 STRG SEN CAN 1

CCS-299

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

U0126 STRG SEN CAN 1

Description

INFOID:0000000005501941

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:0000000005501942

DTC DETECTION LOGIC

NOTE:
If DTC “U0126” 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 “U0126” is detected as the current malfunction in self-diagnosis results of “ICC”.