Infiniti FX35, FX50 (S51). Manual — part 357
CCS-248
< DTC/CIRCUIT DIAGNOSIS >
[DCA]
C1A15 GEAR POSITION
C1A15 GEAR POSITION
Description
INFOID:0000000005501839
ICC sensor integrated unit judges the gear position based on the following signals.
• Shift position signal transmitted from TCM via CAN communication.
• Value of gear ratio calculated from input speed signal transmitted from TCM via CAN communication.
• Value of gear ratio calculated from the vehicle speed signal transmitted from ABS actuator and electric unit
(control unit) via CAN communication.
DTC Logic
INFOID:0000000005501840
DTC DETECTION LOGIC
NOTE:
If DTC “C1A15” is detected along with DTC “U1000”, “C1A03” or “C1A04”, first diagnose the DTC “U1000”,
“C1A03” or “C1A04”.
• Refer to
CCS-313, "ICC SENSOR INTEGRATED UNIT : DTC Logic"
for DTC “U1000”.
• Refer to
• Refer to
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start the engine.
2.
Turn the DCA system ON.
3.
Drive the vehicle at 10 km/h (6 MPH) or faster for approximately 15 minutes or more.
CAUTION:
Always drive safely.
4.
Stop the vehicle.
5.
Perform “All DTC Reading” with CONSULT-III.
6.
Check if the “C1A15” is detected as the current malfunction in the self-diagnosis results of “ICC”.
Is “C1A15” detected as the current malfunction?
YES
>> Refer to
CCS-248, "Diagnosis Procedure"
NO
>> Refer to
GI-36, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000005501841
1.
CHECK SELF-DIAGNOSIS RESULTS
Check if “C1A03”, “C1A04”, or “U1000” is detected other than “C1A15” 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 VEHICLE SPEED SIGNAL
Check that “VHCL SPEED SE” operates normally in “DATA MONITOR” of “ICC”.
CAUTION:
Be careful of the vehicle speed.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 7.
DTC
(On board dis-
play)
Trouble diagnosis
name
DTC detecting condition
Possible causes
C1A15
(15)
GEAR POSITION
If a mismatch occurs between an shift posi-
tion signal transmitted from TCM via CAN
communication and the gear position calcu-
lated by ICC sensor integrated unit
• Input speed sensor
• Vehicle speed sensor A/T (output speed
sensor)
• TCM
CCS
C1A15 GEAR POSITION
CCS-249
< DTC/CIRCUIT DIAGNOSIS >
[DCA]
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3.
CHECK GEAR POSITION
Check that “GEAR” operates normally in “DATA MONITOR” of “ICC”.
CAUTION:
Be careful of the vehicle speed.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK GEAR POSITION SIGNAL
Check that “GEAR” operates normally in “DATA MONITOR” of “TRANSMISSION”.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 6.
5.
CHECK INPUT SPEED SENSOR SIGNAL
Check that “INPUT SPEED” operates normally in “DATA MONITOR” of “TRANSMISSION”.
Is the inspection result normal?
YES
>> Replace the ICC sensor integrated unit. Refer to
NO
>> GO TO 6.
6.
CHECK TCM SELF-DIAGNOSIS RESULTS
1.
Perform “All DTC Reading”.
2.
Check if any DTC is detected in “Self Diagnostic Result” of “TRANSMISSION”.
Is any DTC detected?
YES
>> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
(VQ35HR) or
NO
>> Replace the ICC sensor integrated unit. Refer to
7.
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS RESULTS
1.
Perform “All DTC Reading”.
2.
Check if any DTC is detected in “Self Diagnostic Result” of “ABS”.
Is any DTC detected?
YES
>> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
NO
>> Replace the ICC sensor integrated unit. Refer to
Special Repair Requirement
INFOID:0000000005501842
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.
CCS-250
< DTC/CIRCUIT DIAGNOSIS >
[DCA]
C1A15 GEAR POSITION
>> WORK END
CCS
C1A16 RADAR STAIN
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< DTC/CIRCUIT DIAGNOSIS >
[DCA]
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C1A16 RADAR STAIN
Description
INFOID:0000000005501843
ICC sensor integrated unit detects the reflected light from the vehicle ahead by irradiating a laser beam for-
ward. It calculates the distance from and relative speed with the vehicle ahead based on the detected signal.
DTC Logic
INFOID:0000000005501844
DTC DETECTION LOGIC
NOTE:
DTC “C1A16” may be detected under the following conditions. (Explain to the customer about the difference
between the contamination detection function and the indication when the error is detected and tell them “This
is not malfunction”.)
• When contamination or foreign materials adhere on the ICC sensor integrated unit body window
• When driving while it is snowing or when frost forms on the ICC sensor integrated unit body window
• When the ICC sensor integrated unit body window is temporarily fogged
Diagnosis Procedure
INFOID:0000000005501845
1.
VISUAL CHECK 1
Check ICC sensor integrated unit body window for contamination and foreign materials.
Does contamination or foreign materials adhere?
YES
>> Wipe out the contamination and foreign materials from the ICC sensor integrated unit body win-
dow.
NO
>> GO TO 2.
2.
VISUAL CHECK 2
Check ICC sensor integrated unit body window for cracks and scratches.
Is it found?
YES
>> Replace the ICC sensor integrated unit. Refer to
NO
>> GO TO 3.
3.
INTERVIEW
1.
Ask if there is any trace of contamination or foreign materials adhering to the ICC sensor integrated unit
body window.
2.
Ask if ICC sensor integrated unit body window was frosted during driving or if vehicle was driven in snow.
3.
Ask if ICC sensor integrated unit body window was temporarily fogged. (Windshield glass may also tend
to fog, etc.)
What is the result of the interview with the customer?
YES
>> Explain to the customer about the difference between the contamination detection function and
the indication when the malfunction is detected and tell them “This is not malfunction”.
NO
>> Replace the ICC sensor integrated unit. Refer to
Special Repair Requirement
INFOID:0000000005501846
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
DTC
(On board dis-
play)
Trouble diagnosis
name
DTC detecting condition
Possible causes
C1A16
(16)
RADAR STAIN
If any stain occurs to ICC sensor integrated
unit body window
• Stain or foreign materials is deposit-
ed
• Cracks or scratches exist
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