Infiniti EX35. Manual — part 375
CCS
C1A05 BRAKE SW/STOP LAMP SW
CCS-35
< COMPONENT DIAGNOSIS >
[INTELLIGENT CRUISE CONTROL]
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C1A05 BRAKE SW/STOP LAMP SW
Description
INFOID:0000000003130046
• When the brake pedal is depressed, ICC brake switch is turned OFF and stop lamp switch is turned ON.
• ICC brake switch signal is inputted to ECM. ECM transmits the data to the ICC sensor integrated unit with
CAN communication.
• Stop lamp switch signal is inputted to ECM and the ABS actuator and electric unit (control unit). ECM and
the ABS actuator and electric unit (control unit) transmit the data to the ICC sensor integrated unit with CAN
communication.
DTC Logic
INFOID:0000000003130047
DTC DETECTION LOGIC
NOTE:
If DTC “C1A05” is detected along with DTC “U1000”, “U0401”, “U0415” or “U0121”, first diagnose the DTC
“U1000”, “U0401”, “U0415” or “U0121”.
• DTC “U1000”: Refer to
.
Diagnosis Procedure
INFOID:0000000003130048
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), “U0401: ECM CAN CIR 1” (DTC 120), “U0415:
VDC CAN CIR 1” (DTC 126) or “U0121: VDC CAN CIR 2” (DTC 127) other than “C1A05: BRAKE SW/
STOP L SW” (DTC 5) 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 27.
3.
CHECK ICC BRAKE SWITCH WITH ICC DATA MONITOR
With CONSULT-III
With “DATA MONITOR” of “ICC”, check if “BRAKE SW” operates normally.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 7.
DTC No.
(On board
display)
Trouble diagnosis name
DTC detecting condition
Possible cause
C1A05
(5)
BRAKE SW/STOP L SW
If the ICC sensor integrated unit receives sig-
nals indicating that the stop lamp switch [from
ABS actuator and electric unit (control unit)] is
ON and the ICC brake switch (from ECM) is ON.
• Stop lamp switch circuit
• ICC brake switch circuit
• Stop lamp switch
• ICC brake switch
• Incorrect stop lamp switch installation
• Incorrect ICC brake switch installation
• ECM
• ABS actuator and electric unit (control
unit)
CCS-36
< COMPONENT DIAGNOSIS >
[INTELLIGENT CRUISE CONTROL]
C1A05 BRAKE SW/STOP LAMP SW
4.
CHECK STOP LAMP SWITCH WITH ABS DATA MONITOR
With CONSULT-III
With “Data Monitor” of “ABS”, check if “STOP LAMP SW” operates normally.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 16.
5.
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 25.
NO
>> GO TO 6.
6.
PERFORM SELF-DIAGNOSIS OF ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
1.
Perform self-diagnosis of ABS actuator and electric unit (control unit).
2.
Check if DTC is detected. Refer to
.
Is any DTC detected?
YES
>> GO TO 25.
NO
>> GO TO 26.
7.
CHECK ICC BRAKE SWITCH INSTALLATION
1.
Turn ignition switch OFF.
2.
Check ICC brake switch for proper installation. Refer to
BR-7, "Inspection and Adjustment"
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> GO TO 8.
8.
ADJUST ICC BRAKE SWITCH
Adjust ICC brake switch. Refer to
BR-7, "Inspection and Adjustment"
.
>> GO TO 27.
9.
CHECK ICC BRAKE SWITCH
1.
Disconnect ICC brake switch connector.
2.
Check ICC brake switch. Refer to
CCS-39, "Component Inspection (ICC BRAKE SWITCH)"
.
Is the inspection result normal?
YES
>> GO TO 11.
NO
>> GO TO 10.
10.
REPLACE ICC BRAKE SWITCH
Replace ICC brake switch.
>> GO TO 27.
11.
CHECK ICC BRAKE SWITCH POWER SUPPLY CIRCUIT
1.
Turn ignition switch ON.
2.
Check voltage between ICC brake switch harness connector and ground.
Is the inspection result normal?
Terminal
Voltage
(Approx.)
(+)
(–)
ICC brake switch
connector
Terminal
E114
1 Ground
Battery
voltage
CCS
C1A05 BRAKE SW/STOP LAMP SW
CCS-37
< COMPONENT DIAGNOSIS >
[INTELLIGENT CRUISE CONTROL]
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YES
>> GO TO 13.
NO
>> GO TO 12.
12.
REPAIR OR REPLACE ICC BRAKE SWITCH HARNESS OR FUSE
Repair or replace ICC brake switch power supply harness or fuse.
>> GO TO 27.
13.
CHECK HARNESS BETWEEN ICC BRAKE SWITCH AND ECM
1.
Turn ignition switch OFF.
2.
Disconnect ECM connector.
3.
Check continuity between ICC brake switch harness connector and ECM harness connector.
Is the inspection result normal?
YES
>> GO TO 15.
NO
>> GO TO 14.
14.
REPAIR OR REPLACE HARNESS BETWEEN ICC BRAKE SWITCH AND ECM
Repair or replace harness between ICC brake switch and ECM.
>> GO TO 27.
15.
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 25.
NO
>> GO TO 26.
16.
CHECK STOP LAMP SWITCH INSTALLATION
1.
Turn ignition switch OFF.
2.
Check stop lamp switch for proper installation. Refer to
BR-7, "Inspection and Adjustment"
.
Is the inspection result normal?
YES
>> GO TO 18.
NO
>> GO TO 17.
17.
ADJUST STOP LAMP SWITCH
Adjust stop lamp switch. Refer to
BR-7, "Inspection and Adjustment"
>> GO TO 27.
18.
CHECK STOP LAMP SWITCH
1.
Disconnect stop lamp switch connector.
2.
Check stop lamp switch. Refer to
CCS-39, "Component Inspection (STOP LAMP SWITCH)"
.
Is the inspection result normal?
YES
>> GO TO 20.
NO
>> GO TO 19.
19.
REPLACE STOP LAMP SWITCH
Replace stop lamp switch.
>> GO TO 27.
ICC brake switch
ECM
Continuity
Connector
Terminal Connector
Terminal
E114
2
M107
126
Existed
CCS-38
< COMPONENT DIAGNOSIS >
[INTELLIGENT CRUISE CONTROL]
C1A05 BRAKE SW/STOP LAMP SW
20.
CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1.
Turn ignition switch ON.
2.
Check voltage between stop lamp switch harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 22.
NO
>> GO TO 21.
21.
REPAIR OR REPLACE STOP LAMP SWITCH HARNESS OR FUSE
Repair or replace stop lamp switch power supply harness or fuse.
>> GO TO 27.
22.
CHECK HARNESS BETWEEN STOP LAMP SWITCH AND ABS ACTUATOR AND ELECTRIC UNIT
(CONTROL UNIT)
1.
Turn ignition switch OFF.
2.
Disconnect ABS actuator and electric unit (control unit) connector.
3.
Check continuity between stop lamp switch harness connector and ABS actuator and electric unit (control
unit) harness connector.
Is the inspection result normal?
YES
>> GO TO 24.
NO
>> GO TO 23.
23.
REPAIR OR REPLACE HARNESS BETWEEN STOP LAMP SWITCH AND ABS ACTUATOR AND ELEC-
TRIC UNIT (CONTROL UNIT)
Repair or replace harness between stop lamp switch and ABS actuator and electric unit (control unit).
>> GO TO 27.
24.
PERFORM SELF-DIAGNOSIS OF ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
1.
Perform self-diagnosis of ABS actuator and electric unit (control unit).
2.
Check if DTC is detected. Refer to
.
>> GO TO 25.
25.
REPAIR OR REPLACE APPLICABLE ITEM
Repair or replace the applicable item identified by the self-diagnosis result.
>> GO TO 27.
26.
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
.
Terminal
Voltage
(Approx.)
(+)
(–)
Stop lamp switch
connector
Terminal
E110
1
Ground
Battery voltage
Stop lamp switch
ABS actuator and electric unit
(control unit)
Continuity
Connector
Terminal Connector
Terminal
E110
2
E41
30
Existed
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