Infiniti EX35. Manual — part 379
CCS
C1A14 ECM
CCS-51
< COMPONENT DIAGNOSIS >
[INTELLIGENT CRUISE CONTROL]
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C1A14 ECM
Description
INFOID:0000000003130064
• ECM transmits the accelerator pedal position signal, ICC brake switch signal, stop lamp switch signal and
ICC steering switch signal, etc. to the ICC sensor integrated unit with CAN communication.
• ECM controls the electronic control throttle based on the engine torque demand received from the ICC sen-
sor integrated unit with CAN communication.
DTC Logic
INFOID:0000000003130065
DTC DETECTION LOGIC
NOTE:
If DTC “C1A14” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to
.
Diagnosis Procedure
INFOID:0000000003130066
1.
PERFORM SELF-DIAGNOSIS OF ICC SENSOR INTEGRATED UNIT
1.
Perform self-diagnosis of ICC sensor integrated unit.
2.
Check if DTC “U1000: CAN COMM CIRCUIT” (DTC 100) other than “C1A14: ECM CIRCUIT” (DTC 14) is
detected.
Is any DTC detected?
YES
>> GO TO 2.
NO
>> GO TO 3.
2.
CAN COMMUNICATION INSPECTION
Perform the CAN communication system inspection. Repair or replace the applicable item. Refer to
.
>> GO TO 6.
3.
PERFORM SELF-DIAGNOSIS OF ECM
1.
Perform self-diagnosis of ECM.
2.
Check if DTC is detected. Refer to
.
Is any DTC detected?
YES
>> GO TO 4.
NO
>> GO TO 5.
4.
REPAIR OR REPLACE APPLICABLE ITEM
Repair or replace the applicable item identified by the self-diagnosis result.
>> GO TO 6.
5.
REPLACE ICC SENSOR INTEGRATED UNIT
1.
Replace ICC sensor integrated unit
2.
Adjust laser beam aiming. Refer to
CCS-8, "LASER BEAM AIMING ADJUSTMENT : Special Repair
.
>> GO TO 6.
DTC No.
(On board
display)
Trouble diagnosis name
DTC detecting condition
Possible cause
C1A14
(14)
ECM CIRCUIT
If an abnormal condition occurs with ECM.
• Accelerator pedal position sensor
• ECM
• ICC sensor integrated unit
CCS-52
< COMPONENT DIAGNOSIS >
[INTELLIGENT CRUISE CONTROL]
C1A14 ECM
6.
CHECK ICC SYSTEM
1.
Erase DTC and perform ICC system action test. Then perform self-diagnosis of ICC sensor integrated
unit. (For the details on the ICC system action test, refer to
CCS-13, "ACTION TEST : Special Repair
Requirement (Vehicle-To-Vehicle Distance Control Mode)"
).
2.
Check that no abnormal condition is present in the ICC system.
>> INSPECTION END
CCS
C1A15 GEAR POSITION
CCS-53
< COMPONENT DIAGNOSIS >
[INTELLIGENT CRUISE CONTROL]
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C1A15 GEAR POSITION
Description
INFOID:0000000003130067
ICC sensor integrated unit judges gear positions according to the following signals.
• A/T turbine revolution signal transmitted from TCM with CAN communication.
• Gear ratio calculated from current gear position signal transmitted from TCM with CAN communication.
• Gear ratio calculated from vehicle speed signal transmitted from ABS actuator and electronic unit (control
unit) with CAN communication
DTC Logic
INFOID:0000000003130068
DTC DETECTION LOGIC
NOTE:
If DTC “C1A15” is detected along with DTC “U1000”, “C1A03” or “C1A04”, first diagnose the DTC “U1000”,
“C1A03” or “C1A04”.
• DTC “U1000”: Refer to
.
• DTC “C1A03”: Refer to
.
• DTC “C1A04”: Refer to
.
Diagnosis Procedure
INFOID:0000000003130069
1.
PERFORM SELF-DIAGNOSIS OF ICC SENSOR INTEGRATED UNIT
1.
Perform self-diagnosis of ICC sensor integrated unit.
2.
Check if DTC “C1A03: VHCL SPEED SE CIRC” (DTC 3), “C1A04: ABS/TCS/VDC CIRC” (DTC 4) or
“U1000: CAN COMM CIRCUIT” (DTC100) other than “C1A15: GEAR POSITION” (DTC 15) is detected.
Is any DTC detected?
YES
>> GO TO 2.
NO
>> GO TO 3.
2.
DIAGNOSIS FOR DETECTED DTC
Perform diagnosis on the detected DTC and repair or replace the applicable item. Refer to
.
>> GO TO 9.
3.
CHECK VEHICLE SPEED SIGNAL
With CONSULT-III
1.
Start engine.
2.
With “Data Monitor” of “ICC”, check if “VHCL SPEED SE” operates normally.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 8.
4.
CHECK SHIFT GEAR POSITION
Check if gear positions are correct in A/T.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> GO TO 5.
DTC No.
(On board
display)
Trouble diagnosis name
DTC detecting condition
Possible cause
C1A15
(15)
GEAR POSITION
When a mismatch occurs between an A/T tur-
bine revolution signal transmitted from TCM
with CAN communication and a vehicle speed
signal transmitted from ABS actuator and elec-
tric unit (control unit)
• A/T turbine revolution sensor
• TCM
• Wheel sensor
• ABS actuator and electric unit (control
unit)
CCS-54
< COMPONENT DIAGNOSIS >
[INTELLIGENT CRUISE CONTROL]
C1A15 GEAR POSITION
5.
CHECK TCM GEAR POSITION SIGNAL
With CONSULT-III
With “Data Monitor” of “A/T”, check if “GEAR” operates normally.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> GO TO 7.
6.
CHECK TCM TURBINE REVOLUTION
With CONSULT-III
With “Data Monitor” of “A/T”, check if “TURBINE REV” operates normally.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> GO TO 7.
7.
PERFORM SELF-DIAGNOSIS OF TCM
1.
Perform self-diagnosis of TCM.
2.
Check if DTC is detected. Refer to
.
3.
Repair or replace applicable item.
>> GO TO 9.
8.
REPLACE ICC SENSOR INTEGRATED UNIT
1.
Replace ICC sensor integrated unit.
2.
Adjust laser beam aiming. Refer to
CCS-8, "LASER BEAM AIMING ADJUSTMENT : Special Repair
.
>> GO TO 9.
9.
CHECK ICC SYSTEM
1.
Erase DTC and perform ICC system action test. Then perform self-diagnosis of ICC sensor integrated
unit. (For the details on the ICC system action test, refer to
CCS-13, "ACTION TEST : Special Repair
Requirement (Vehicle-To-Vehicle Distance Control Mode)"
).
2.
Check that no abnormal condition is present in the ICC system.
>> INSPECTION END
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