Infiniti G37 Coupe. Manual — part 305
CCS
C1A04 ABS/TCS/VDC SYSTEM
CCS-33
< COMPONENT DIAGNOSIS >
[INTELLIGENT CRUISE CONTROL]
C
D
E
F
G
H
I
J
K
L
M
B
N
P
A
>> GO TO 6.
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-11, "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-34
< COMPONENT DIAGNOSIS >
[INTELLIGENT CRUISE CONTROL]
C1A05 BRAKE SW/STOP LAMP SW
C1A05 BRAKE SW/STOP LAMP SW
Description
INFOID:0000000001606883
• 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.
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
• DTC U0401: Refer to
.
• DTC U0415: Refer to
.
• DTC U0121: Refer to
.
DTC Logic
INFOID:0000000001606884
DTC DETECTION LOGIC
Diagnosis Procedure (A/T Models)
INFOID:0000000001606885
1.
PERFORM SELF-DIAGNOSIS OF ICC SENSOR INTEGRATED UNIT
1.
Perform self-diagnosis of ICC sensor integrated unit.
2.
Check if DTC “CAN COMM CIRCUIT [U1000]” (DTC 100), “ECM CAN CIR 1 [U0401]” (DTC 120), “VDC
CAN CIR 1 [U0415]” (DTC 126) or “VDC CON CIR 2 [U0121]” (DTC 127) other than “BRAKE SW/STOP L
SW [C1A05]” (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.
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
• ICC clutch switch circuit (M/T)
• Stop lamp switch
• ICC brake switch
• ICC clutch switch (M/T)
• Incorrect stop lamp switch installation
• Incorrect ICC brake switch installation
• Incorrect ICC clutch switch installation
(M/T)
• ECM
• ABS actuator and electric unit (control
unit)
CCS
C1A05 BRAKE SW/STOP LAMP SW
CCS-35
< COMPONENT DIAGNOSIS >
[INTELLIGENT CRUISE CONTROL]
C
D
E
F
G
H
I
J
K
L
M
B
N
P
A
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 7.
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-42, "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.
CCS-36
< COMPONENT DIAGNOSIS >
[INTELLIGENT CRUISE CONTROL]
C1A05 BRAKE SW/STOP LAMP SW
Is the inspection result normal?
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-43, "Component Inspection (STOP LAMP SWITCH)"
.
Is the inspection result normal?
Terminal
Voltage
(Approx.)
(+)
(–)
ICC brake switch
connector
Terminal
E114
1 Ground
Battery
voltage
ICC brake switch
ECM
Continuity
Connector
Terminal Connector
Terminal
E114
2
M107
126
Existed
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