Infiniti FX35, FX50 (S51). Manual — part 319
CCS-96
< DTC/CIRCUIT DIAGNOSIS >
[ICC (FULL SPEED RANGE)]
C1A18 LASER AIMING INCMP
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
C1A21 UNIT HIGH TEMP
CCS-97
< DTC/CIRCUIT DIAGNOSIS >
[ICC (FULL SPEED RANGE)]
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C1A21 UNIT HIGH TEMP
Description
INFOID:0000000005501644
ICC sensor integrated unit integrates the temperature sensor.
DTC Logic
INFOID:0000000005501645
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Turn the ignition switch OFF.
2.
Wait for 10 minutes or more to cool the ICC sensor integrated unit.
3.
Start the engine.
4.
Turn the MAIN switch of ICC system ON.
5.
Perform “All DTC Reading” with CONSULT-III.
6.
Check if the “C1A21” is detected as the current malfunction in “Self Diagnostic Result” of “ICC”.
Is “C1A21” detected as the current malfunction?
YES
>> Refer to
NO
>> Refer to
GI-36, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000005501646
1.
CHECK ENGINE COOLING SYSTEM
Check for any malfunctions in engine cooling system.
Is engine cooling system normal?
YES
>> Replace the ICC sensor integrated unit. Refer to
NO
>> Repair engine cooling system.
Special Repair Requirement
INFOID:0000000005501647
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.
DTC
(On board dis-
play)
Trouble diagnosis
name
DTC detecting condition
Possible causes
C1A21
(21)
UNIT HIGH TEMP
If the temperature sensor (integrated in the ICC
sensor integrated unit) detects a high temperature
Temperature around ICC sensor inte-
grated unit is excessively high
CCS-98
< DTC/CIRCUIT DIAGNOSIS >
[ICC (FULL SPEED RANGE)]
C1A21 UNIT HIGH TEMP
>> WORK END
CCS
C1A22 BCU CIRCUIT
CCS-99
< DTC/CIRCUIT DIAGNOSIS >
[ICC (FULL SPEED RANGE)]
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C1A22 BCU CIRCUIT
Description
INFOID:0000000005501648
• 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:0000000005501649
DTC DETECTION LOGIC
NOTE:
If DTC “C1A22” is detected along with DTC “U1000”, or “C1A05”, first diagnose the DTC “U1000”, or “C1A05”.
• Refer to
• Refer to
for DTC “C1A05”.
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start the engine.
2.
Turn the MAIN switch of ICC system ON.
3.
Perform “All DTC Reading” with CONSULT-III.
4.
Check if the “C1A22” is detected as the current malfunction in “Self Diagnostic Result” of “ICC”.
Is “C1A22” detected as the current malfunction?
YES
>> Refer to
NO
>> Refer to
GI-36, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000005501650
1.
CHECK SELF-DIAGNOSIS RESULTS
Check if “C1A05” or “U1000” is detected other than “C1A22” 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
>> GO TO 2.
2.
CHECK STOP LAMP SWITCH AND ICC BRAKE SWITCH
Check that “STOP LAMP SW” and “BRAKE SW” operate normally in “DATA MONITOR” of “ICC”.
Is the inspection result normal?
YES
>> GO TO 10.
NO-1
>> When “BRAKE SW” operation is malfunctioning: GO TO 3.
NO-2
>> When “STOP LAMP SW” operation is malfunctioning: GO TO 5.
3.
CHECK ICC BRAKE SWITCH INSTALLATION
1.
Turn the ignition switch OFF.
DTC
(On board
display)
Trouble diagnosis name
DTC detecting condition
Possible causes
C1A22
(22)
BCU CIRCUIT
If the brake booster control unit cannot control
the brake booster
• Stop lamp switch circuit
• ICC brake switch circuit
• Stop lamp switch
• ICC brake switch
• Incorrect stop lamp switch installation
• Incorrect ICC brake switch installa-
tion
• ECM
• Brake booster control unit
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