Infiniti FX35, FX50 (S51). Manual - part 362

CCS-268

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

C1A32 IBA FLAG STUCK

C1A32 IBA FLAG STUCK

Description

INFOID:0000000005501875

ICC sensor integrated unit shares components with the IBA system. 

DTC Logic

INFOID:0000000005501876

DTC DETECTION LOGIC

NOTE:
If DTC “C1A32” 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, and wait for 5 minutes or more. 

3.

Perform “All DTC Reading” with CONSULT-III. 

4.

Check if the “C1A32” is detected as the current malfunction in self-diagnosis results of “ICC”. 

Is “C1A32” detected as the current malfunction?

YES

>> Refer to 

CCS-268, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-36, "Intermittent Incident"

. 

Diagnosis Procedure

INFOID:0000000005501877

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “C1A32” 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-268, "DTC Logic"

.

5.

Perform “All DTC Reading”. 

6.

Check if the “C1A32” is detected in “Self Diagnostic Result” of “ICC”. 

Is “C1A32” detected?

YES

>> Replace the ICC sensor integrated unit. Refer to 

CCS-380, "Exploded View"

.

NO

>> INSPECTION END

Special Repair Requirement

INFOID:0000000005501878

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

C1A32

(32)

IBA FLAG STUCK

If the control (detection) of IBA is malfunction-
ing

• ICC sensor integrated unit
• Brake booster control unit

CCS

C1A32 IBA FLAG STUCK

CCS-269

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

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-270

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

C1A33 CAN TRANSMISSION ERROR

C1A33 CAN TRANSMISSION ERROR

Description

INFOID:0000000005501879

ICC sensor integrated unit transmits the signal required by the DCA system control to ECM via CAN commu-
nication. 

DTC Logic

INFOID:0000000005501880

DTC DETECTION LOGIC

NOTE:
If DTC “C1A33” 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 “C1A33” is detected as the current malfunction in self-diagnosis results of “ICC”. 

Is “C1A33” detected as the current malfunction?

YES

>> Refer to 

CCS-270, "Diagnosis Procedure"

.

NO

>> Refer to 

GI-36, "Intermittent Incident"

. 

Diagnosis Procedure

INFOID:0000000005501881

1.

CHECK SELF-DIAGNOSIS RESULTS

Check if “U1000” is detected other than “C1A33” 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:0000000005501882

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"

. 

>> GO TO 2.

2.

CHECK DCA SYSTEM

DTC

(On board dis-

play)

Trouble diagnosis name

DTC detecting condition

Possible causes

C1A33

(33)

CAN TRANSMISSION 
ERROR

If an error occurs in the CAN communication 
signal that ICC sensor integrated unit trans-
mits to ECM

ICC sensor integrated unit

CCS

C1A33 CAN TRANSMISSION ERROR

CCS-271

< DTC/CIRCUIT DIAGNOSIS >

[DCA]

C

D

E

F

G

H

I

J

K

L

M

B

N

P

A

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