Infiniti QX56 (Z62). Manual — part 205
CCS
C1A03 VEHICLE SPEED SENSOR
CCS-87
< DTC/CIRCUIT DIAGNOSIS >
[ICC]
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C1A03 VEHICLE SPEED SENSOR
DTC Logic
INFOID:0000000006224308
DTC DETECTION LOGIC
NOTE:
If DTC “C1A03” is detected along with DTC “U1000” or “C1A04”, first diagnose the DTC “U1000” or “C1A04”.
• Refer to
CCS-145, "ADAS CONTROL UNIT : DTC Logic"
• Refer to
for DTC “C1A04”.
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1.
Start the engine.
2.
Turn the MAIN switch of ICC system ON.
3.
Drive the vehicle at 30 km/h (19 MPH) or more.
CAUTION:
Always drive safely.
4.
Stop the vehicle.
5.
Perform “All DTC Reading” with CONSULT-III.
6.
Check if the “C1A03” is detected as the current malfunction in “Self Diagnostic Result” of “ICC/ADAS”.
Is “C1A03” detected as the current malfunction?
YES
>> Refer to
NO
>> Refer to
GI-40, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000006224309
1.
CHECK SELF-DIAGNOSIS RESULTS
Check if “C1A04” or “U1000” is detected other than “C1A03” in “Self Diagnostic Result” of “ICC/ADAS”.
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 DATA MONITOR
1.
Start the engine.
2.
Drive the vehicle.
3.
Check that the value of “VHCL SPD AT” is almost the same as the value of “VHCL SPEED SE” in “DATA
MONITOR” of “ICC/ADAS”.
CAUTION:
Be careful of the vehicle speed.
Is the inspection result normal?
YES
>> Replace the ADAS control unit. Refer to
DAS-63, "Removal and Installation"
NO
>> GO TO 3.
3.
CHECK TCM SELF-DIAGNOSIS RESULTS
1.
Perform “All DTC Reading”.
2.
Check if any DTC is detected in “Self Diagnostic Result” of “TRANSMISSION”.
DTC
(On board
display)
Trouble diagnosis
name
DTC detecting condition
Possible causes
C1A03
(3)
VHCL SPEED SE
CIRC
If the vehicle speed signal (wheel speed) from
ABS actuator and electric unit (control unit) and
the A/T vehicle speed sensor signal (output
shaft revolution signal) from TCM, received by
the ADAS control unit via CAN communication,
are inconsistent
• Wheel speed sensor
• ABS actuator and electric unit (control
unit)
• Vehicle speed sensor A/T (output speed
sensor)
• TCM
• ADAS control unit
CCS-88
< DTC/CIRCUIT DIAGNOSIS >
[ICC]
C1A03 VEHICLE SPEED SENSOR
Is any DTC detected?
YES
>> Perform diagnosis on the detected DTC and repair or replace the malfunctioning parts. Refer to
NO
>> GO TO 4.
4.
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS RESULTS
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 ADAS control unit. Refer to
CCS
C1A04 ABS/TCS/VDC SYSTEM
CCS-89
< DTC/CIRCUIT DIAGNOSIS >
[ICC]
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C1A04 ABS/TCS/VDC SYSTEM
DTC Logic
INFOID:0000000006224310
DTC DETECTION LOGIC
NOTE:
If DTC “C1A04” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to
"ADAS CONTROL UNIT : DTC Logic"
.
Diagnosis Procedure
INFOID:0000000006224311
1.
CHECK SELF-DIAGNOSIS RESULTS
1.
Perform “All DTC Reading” with CONSULT-III.
2.
Check if the “U1000” is detected other than “C1A04” in “Self Diagnostic Result” of “ICC/ADAS”.
Is “U1000” detected?
YES
>> Perform the CAN communication system inspection. Repair or replace the malfunctioning parts.
CCS-145, "ADAS CONTROL UNIT : DTC Logic"
NO
>> GO TO 2.
2.
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS RESULTS
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 ADAS control unit. Refer to
DAS-63, "Removal and Installation"
DTC
(On board dis-
play)
Trouble diagnosis
name
DTC detecting condition
Possible causes
C1A04
(4)
ABS/TCS/VDC CIRC
If a malfunction occurs in the VDC/TCS/ABS
system
ABS actuator and electric unit (control
unit)
CCS-90
< DTC/CIRCUIT DIAGNOSIS >
[ICC]
C1A05 BRAKE SW/STOP LAMP SW
C1A05 BRAKE SW/STOP LAMP SW
DTC Logic
INFOID:0000000006224312
DTC DETECTION LOGIC
NOTE:
If DTC “C1A05” is detected along with DTC “U1000”, first diagnose the DTC “U1000”. Refer to
"ADAS CONTROL UNIT : DTC Logic"
Diagnosis Procedure
INFOID:0000000006224313
1.
CHECK SELF-DIAGNOSIS RESULTS
1.
Perform “All DTC Reading” with CONSULT-III.
2.
Check if the “U1000” is detected other than “C1A05” in “Self Diagnostic Result” of “ICC/ADAS”.
Is “U1000” detected?
YES
>> Perform the CAN communication system inspection. Repair or replace the malfunctioning parts.
CCS-145, "ADAS CONTROL UNIT : DTC Logic"
.
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/ADAS”.
Is the inspection result normal?
YES
>> GO TO 3.
NO-1
>> When “BRAKE SW” operation is malfunctioning: GO TO 4.
NO-2
>> When “STOP LAMP SW” operation is malfunctioning: GO TO 9.
3.
CHECK STOP LAMP SWITCH
Check that “STOP LAMP SW” operate normally in “DATA MONITOR” of “ABS”.
Is the inspection result normal?
YES
>> GO TO 14.
NO
>> GO TO 9.
4.
CHECK ICC BRAKE SWITCH INSTALLATION
1.
Turn ignition switch OFF.
2.
Check ICC brake switch for correct installation. Refer to
BR-7, "Inspection and Adjustment"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Adjust ICC brake switch installation. Refer to
BR-7, "Inspection and Adjustment"
5.
ICC BRAKE SWITCH INSPECTION
1.
Disconnect ICC brake switch connector.
2.
Check ICC brake switch. Refer to
CCS-93, "Component Inspection (ICC Brake Switch)"
.
Is the inspection result normal?
DTC
(On board dis-
play)
Trouble diagnosis
name
DTC detecting condition
Possible causes
C1A05
(5)
BRAKE SW/STOP L
SW
A mismatch between a stop lamp switch signal
and a ICC brake switch signal received from
ECM and a stop lamp signal received from the
ABS actuator and electric unit (control unit) con-
tinues for 10 seconds or more with vehicle
speeds at approximately 40 km/h or more
• Stop lamp switch circuit
• ICC brake switch circuit
• Stop lamp switch
• ICC brake switch
• Incorrect stop lamp switch installa-
tion
• Incorrect ICC brake switch installa-
tion
• ECM
• ABS actuator and electric unit (con-
trol unit)
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