Infiniti FX35, FX50 (S51). Manual - part 372

CCS-308

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

U0415 VDC CAN 1

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"

. 

>> 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

U0418 BCU CAN 1

CCS-309

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

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U0418 BCU CAN 1

Description

INFOID:0000000005501961

The brake booster control unit transmits the signal related to brake control to ICC sensor integrated unit via
ITS communication. 

DTC Logic

INFOID:0000000005501962

DTC DETECTION LOGIC

NOTE:
If DTC “U0418” 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 “U0418” is detected as the current malfunction in self-diagnosis results of “ICC”. 

Is “U0418” detected as the current malfunction?

YES

>> Refer to 

CCS-309, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-36, "Intermittent Incident"

. 

Diagnosis Procedure

INFOID:0000000005501963

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “U0418” 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.

REPLACE BRAKE BOOSTER CONTROL UNIT

1.

Turn the ignition switch OFF.

2.

Replace the brake booster control unit. 

3.

Erases All self-diagnosis results. 

4.

Perform DTC confirmation procedure. Refer to 

CCS-309, "DTC Logic"

. 

5.

Perform “All DTC Reading”. 

6.

Check if the “U0418” is detected in “Self Diagnostic Result” of “ICC”. 

Is “U0418” detected?

YES

>> Replace the ICC sensor integrated unit. Refer to 

CCS-380, "Exploded View"

. 

NO

>> INSPECTION END

Special Repair Requirement

INFOID:0000000005501964

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

DTC

(On board dis-

play)

Trouble diagnosis 

name

DTC detecting condition

Possible causes

U0418

(124)

BCU CAN CIR1

If ICC sensor integrated unit detects an error 
signal that is received from brake booster con-
trol unit via CAN communication

Brake booster control unit

CCS-310

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

U0418 BCU CAN 1

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"

. 

>> 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

U0428 STRG SEN CAN 2

CCS-311

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

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U0428 STRG SEN CAN 2

Description

INFOID:0000000005501965

It detects 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:0000000005501966

DTC DETECTION LOGIC

NOTE:
If DTC “U0428” 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 “U0428” is detected as the current malfunction in self-diagnosis results of “ICC”. 

Is “U0428” detected as the current malfunction?

YES

>> Refer to 

CCS-311, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-36, "Intermittent Incident"

. 

Diagnosis Procedure

INFOID:0000000005501967

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “U0428” 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 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"

. 

NO

>> Replace the ICC sensor integrated unit. Refer to 

CCS-380, "Exploded View"

. 

Special Repair Requirement

INFOID:0000000005501968

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

DTC

(On board dis-

play)

Trouble diagnosis name

DTC detecting condition

Possible causes

U0428

(131)

STRG SEN CAN CIR2

If ICC sensor integrated unit detects an error 
signal that is received from steering angle sen-
sor via CAN communication

Steering angle sensor