Infiniti FX35, FX50 (S51). Manual — part 314
CCS-76
< DTC/CIRCUIT DIAGNOSIS >
[ICC (FULL SPEED RANGE)]
C1A10 RELEASE SWITCH
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace the brake booster.
Special Repair Requirement
INFOID:0000000005501613
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 ICC SYSTEM
1.
Erase the “Self Diagnostic Result”, and then perform “All DTC Reading” again after performing the action
test. (Refer to
CCS-18, "ACTION TEST : Description"
2.
Check that the ICC system is normal.
>> WORK END
CCS
C1A11 PRESSURE CONTROL
CCS-77
< DTC/CIRCUIT DIAGNOSIS >
[ICC (FULL SPEED RANGE)]
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C1A11 PRESSURE CONTROL
Description
INFOID:0000000005501614
• The brake booster control unit 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.
• The brake booster adjusts the brake fluid pressure by driving the booster solenoid.
• The brake pedal is controlled when the brake booster adjusts the brake fluid pressure.
DTC Logic
INFOID:0000000005501615
DTC DETECTION LOGIC
NOTE:
If DTC “C1A11” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start the engine.
2.
Perform the active test item “BOOSTER SOL/V” with CONSULT-III.
3.
Perform “All DTC Reading”.
4.
Check if the “C1A11” is detected as the current malfunction in “Self Diagnostic Result” of “ICC”.
Is “C1A11” detected as the current malfunction?
YES
>> Refer to
NO
>> Refer to
GI-36, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000005501616
1.
CHECK SELF-DIAGNOSIS RESULTS
Check if “U1000” is detected other than “C1A11” in “Self Diagnostic Result” of “ICC”.
Is “U1000” detected?
YES
>> Perform the CAN communication system inspection. Repair or replace the malfunctioning parts.
.
NO
>> GO TO 2.
2.
CHECK BRAKE OPERATION
Check if the brake operates normally.
Does it operate normally?
YES
>> GO TO 4.
NO
>> GO TO 3.
3.
BRAKE LINE INSPECTION
1.
Check the brake system, and then repair malfunctioning parts.
2.
Erases All self-diagnosis results.
3.
Perform “BOOSTER SOL/V” on “Active Test” of “ICC”.
Does it operate normally?
YES
>> INSPECTION END
NO
>> GO TO 4.
4.
CHECK BOOSTER SOLENOID
Check the booster solenoid. Refer to
CCS-78, "Component Inspection"
.
DTC
(On board dis-
play)
Trouble diagnosis name
DTC detecting condition
Possible causes
C1A11
(11)
PRESSURE CONTROL
If the brake booster is malfunctioning
Brake booster
CCS-78
< DTC/CIRCUIT DIAGNOSIS >
[ICC (FULL SPEED RANGE)]
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:0000000005501617
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:0000000005501618
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-79
< DTC/CIRCUIT DIAGNOSIS >
[ICC (FULL SPEED RANGE)]
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D
E
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A
2.
CHECK ICC SYSTEM
1.
Erase the “Self Diagnostic Result”, and then perform “All DTC Reading” again after performing the action
test. (Refer to
CCS-18, "ACTION TEST : Description"
2.
Check that the ICC system is normal.
>> WORK END
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