Infiniti FX35, FX50 (S51). Manual — part 354
CCS-236
< DTC/CIRCUIT DIAGNOSIS >
[DCA]
C1A11 PRESSURE CONTROL
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace the brake booster.
5.
CHECK HARNESS BETWEEN BRAKE BOOSTER (BOOSTER SOLENOID) AND BRAKE BOOSTER
CONTROL UNIT
1.
Turn the ignition switch OFF.
2.
Disconnect connectors of brake booster control unit and brake booster.
3.
Check for continuity between the brake booster control unit harness connector and brake booster harness
connector.
4.
Check for continuity between brake booster control unit harness connector and ground.
Is the inspection result normal?
YES
>> Replace the brake booster control unit.
NO
>> Repair the harnesses or connectors.
Component Inspection
INFOID:0000000005501824
1.
CHECK BRAKE BOOSTER (BOOSTER SOLENOID)
Check resistance between brake booster (booster solenoid) termi-
nals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace the brake booster.
Special Repair Requirement
INFOID:0000000005501825
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.
Brake booster control unit
Brake booster
Continuity
Connector
Terminal
Connector
Terminal
B250
10
E44
4
Existed
12
6
Brake booster control unit
Ground
Continuity
Connector
Terminal
B250
10
Not existed
12
Brake booster
Resistance
Terminal
4
6
Approx. 1.4
Ω
JPOIA0160GB
CCS
C1A11 PRESSURE CONTROL
CCS-237
< DTC/CIRCUIT DIAGNOSIS >
[DCA]
C
D
E
F
G
H
I
J
K
L
M
B
N
P
A
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-238
< DTC/CIRCUIT DIAGNOSIS >
[DCA]
C1A12 LASER BEAM OFF CENTER
C1A12 LASER BEAM OFF CENTER
Description
INFOID:0000000005501826
ICC sensor integrated unit detects the reflected light from the vehicle ahead by irradiating a laser forward. It
calculates the distance from and relative speed with the vehicle ahead based on the detected signal.
DTC Logic
INFOID:0000000005501827
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000005501828
1.
ADJUST LASER BEAM AIMING
1.
Adjust the laser beam aiming with CONSULT-III. Refer to
CCS-13, "LASER BEAM AIMING ADJUST-
2.
Perform “All DTC Reading”.
3.
Check if the “C1A12” is detected in “Self Diagnostic Result” of “ICC”.
Is “C1A12” detected?
YES
>> Replace ICC sensor integrated unit. Refer to
NO
>> INSPECTION END
Special Repair Requirement
INFOID:0000000005501829
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
C1A12
(12)
LASER BEAM OFFCNTR
Laser beam of ICC sensor integrated unit is
off the aiming point
Laser beam is off the aiming point
CCS
C1A13 STOP LAMP RELAY
CCS-239
< DTC/CIRCUIT DIAGNOSIS >
[DCA]
C
D
E
F
G
H
I
J
K
L
M
B
N
P
A
C1A13 STOP LAMP RELAY
Description
INFOID:0000000005501830
• The ICC sensor integrated unit transmits the ICC brake hold relay drive signal to the brake booster control
unit via ITS communication.
• The ICC brake hold relay activates the stop lamp by the ICC brake hold relay drive signal (stop lamp drive
signal) outputted by the brake booster control unit.
DTC Logic
INFOID:0000000005501831
DTC DETECTION LOGIC
NOTE:
If DTC “C1A13” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to
SENSOR INTEGRATED UNIT : DTC Logic"
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE (1)
1.
Start the engine.
2.
Perform the active test item “STOP LAMP” with CONSULT-III.
3.
Perform “All DTC Reading”.
4.
Check if the “C1A13” is detected as the current malfunction in the self-diagnosis results of “ICC”.
Is “C1A13” detected as the current malfunction?
YES
>> Refer to
CCS-239, "Diagnosis Procedure"
NO
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE (2)
1.
Drive at the vehicle speed of 40 km/h (25 MPH) or more for approximately 20 seconds or more without the
brake pedal depressed.
CAUTION:
Always drive safely.
NOTE:
If it is outside the above conditions, repeat the step 1.
2.
Perform “All DTC Reading”.
3.
Check if the “C1A13” is detected as the current malfunction in the self-diagnosis results of “ICC”.
Is “C1A13” detected as the current malfunction?
YES
>> Refer to
CCS-239, "Diagnosis Procedure"
NO
>> Refer to
GI-36, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000005501832
1.
CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “C1A13” in “Self Diagnostic Result” of “ICC”.
Is “U1000” detected?
DTC
(On board dis-
play)
Trouble diagnosis name
DTC detecting condition
Possible causes
C1A13
(13)
STOP LAMP RLY FIX
• If the stop lamp is not activated even
though the ICC sensor integrated unit is
transmitting a ICC brake hold relay drive
signal.
• If the stop lamp is activated even though
the ICC sensor integrated unit is not trans-
mitting a ICC brake hold relay drive signal.
• Stop lamp switch circuit
• ICC brake switch circuit
• ICC brake hold relay circuit
• Stop lamp switch
• ICC brake switch
• ICC brake hold relay
• Incorrect stop lamp switch installation
• Incorrect ICC brake switch installation
• ECM
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