Infiniti FX35, FX50 (S51). Manual — part 361
CCS-264
< DTC/CIRCUIT DIAGNOSIS >
[DCA]
C1A28 BCU POWER SUPPLY CIRCUIT, C1A29 BCU POWER SUPPLY
CIRCUIT2
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
>> 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
C1A30 BCU CAN COMM CIRC
CCS-265
< DTC/CIRCUIT DIAGNOSIS >
[DCA]
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C1A30 BCU CAN COMM CIRC
Description
INFOID:0000000005501867
The brake booster control unit communicates with ICC sensor integrated unit for brake booster control via ITS
communication.
DTC Logic
INFOID:0000000005501868
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000005501869
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 “C1A30” is detected as the current malfunction in self-diagnosis results of “ICC”.
Is “C1A30” detected as the current malfunction?
YES
>> Perform trouble diagnosis for the ITS communication system. Refer to
.
NO
>> Refer to
GI-36, "Intermittent Incident"
.
Special Repair Requirement
INFOID:0000000005501870
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
>> 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
C1A30
(30)
BCU CAN COMM CIRC
If ICC sensor integrated unit receives the sig-
nal for improper condition for brake booster
control unit via ITS communication
ITS communication system
CCS-266
< DTC/CIRCUIT DIAGNOSIS >
[DCA]
C1A31 BCU INTERNAL MALF
C1A31 BCU INTERNAL MALF
Description
INFOID:0000000005501871
The brake booster control unit inputs the brake fluid pressure control signal and release switch signal and
transmits them to ICC sensor integrated unit via ITS communication. Also, it receives the brake fluid pressure
command signal from ICC sensor integrated unit via ITS communication and activates the booster solenoid to
operate the brake booster (brake).
DTC Logic
INFOID:0000000005501872
DTC DETECTION 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 “C1A31” is detected as the current malfunction in self-diagnosis results of “ICC”.
Is “C1A31” detected as the current malfunction?
YES
>> Refer to
CCS-266, "Diagnosis Procedure"
NO
>> Refer to
GI-36, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000005501873
1.
CHECK SELF-DIAGNOSIS RESULTS
Check if any DTC other than “C1A31” is detected in “Self Diagnostic Result” of “ICC”.
Is any DTC detected?
YES
>> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
NO
>> Replace the brake booster control unit.
Special Repair Requirement
INFOID:0000000005501874
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
>> 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.)
DTC
(On board dis-
play)
Trouble diagnosis name
DTC detecting condition
Possible causes
C1A31
(31)
BCU INTERNAL MALF
Brake booster control unit internal malfunction
Brake booster control unit
CCS
C1A31 BCU INTERNAL MALF
CCS-267
< DTC/CIRCUIT DIAGNOSIS >
[DCA]
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A
2.
Check that the DCA system is normal.
>> WORK END
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