C1A13

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS


C1A13 STOP LAMP RLY FIX

1.PERFORM ICC SENSOR INTEGRATED UNIT SELF-DIAGNOSIS
1. Perform self-diagnosis.
2. Check if "U1000: CAN COMM CIRCUIT" (DTC 100) other than "C1A13: STOP LAMP RLY FIX" (DTC 13) is indicated in self-diagnosis item in the display.
Is it indicated?
YES - 1. CAN communication inspection. Refer to ICC.
2. After repairing or replacing applicable item, erase DTC and perform ICC system running test.
Then perform self-diagnosis of ICC system again.
NO - GO TO 2.
CHECK CONNECTOR FOR ECM
1. Turn ignition switch OFF.
2. Disconnect ECM connector, and connect it securely again.
3. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
4. Check if "C1A13: STOP LAMP RLY FIX" (DTC 13) is indicated in self-diagnosis item in the display.
Is it indicated?
YES - GO TO 3.
NO - Poor connector connection
1. Check connector. (Check connector housing for disconnected, loose, bent, and collapsed terminals. If any malfunction is detected, repair applicable part.)
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
3.CHECK STOP LAMP SWITCH WITH ICC DATA MONITOR
With CONSULT-III
With "ICC" "Data Monitor", check if "STOP LAMP SW" operates normally.
OK or NG
OK - GO TO 11.
NG - GO TO 4.
4.CHECK STOP LAMP SWITCH INSTALLATION AND ADJUSTMENT
Check stop lamp switch for proper installation, and adjust the switch if necessary. Refer to Procedures.
OK or NG
OK - GO TO 5.
NG - 1. Adjust stop lamp switch.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
5.CHECK STOP LAMP SWITCH
Check stop lamp switch. Refer to ICC Brake Switch and Stop Lamp Switch.
OK or NG
OK - GO TO 6.
NG - 1. Replace stop lamp switch.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
6.CHECK STOP LAMP ILLUMINATION
1. Turn ignition switch OFF.
2. Disconnect ICC brake hold relay.
3. Connect stop lamp switch connector.
4. Check if stop lamp is turned ON when depressing brake pedal.
OK or NG
OK - GO TO 7.
NG - 1. Repair or replace stop lamp circuit.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
7.CHECK HARNESS BETWEEN STOP LAMP SWITCH AND ECM
1. Disconnect stop lamp switch connector and ECM connector.





2. Check continuity between stop lamp switch harness connector
(A) and ECM harness connector (B).















3. Check continuity between stop lamp switch harness connector
(A) and ground.





OK or NG
OK - GO TO 8.
NG - 1. Repair or replace harness between stop lamp switch and ECM.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
8.CHECK ICC BRAKE HOLD RELAY CIRCUIT
1. Connect ICC brake hold relay and ECM connector.
2. When brake pedal is not depressed, make sure that stop lamp does not illuminate.
OK or NG
OK - GO TO 10.
NG - GO TO 9.
9.CHECK ICC BRAKE HOLD RELAY
1. Disconnect ICC brake hold relay.
2. Check ICC brake hold relay. Refer to ICC Brake Hold Relay.
OK or NG
OK - GO TO 10.
NG - 1. Replace ICC brake hold relay.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
10.PERFORM ECM SELF-DIAGNOSIS
With CONSULT-III
1. Perform "ENGINE" self-diagnosis. Refer to Testing and Inspection (for VQ35HR) or , "CONSULT-III Function" (for VK45DE).
2. Check if malfunction is indicated.
Is malfunction indicated?
YES - 1. Repair or replace applicable item.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
NO - 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
11.CHECK HARNESS BETWEEN ICC SENSOR INTEGRATED UNIT AND ICC BRAKE HOLD RELAY
1. Turn ignition switch OFF.
2. Disconnect ICC sensor integrated unit connector and ICC brake hold relay.





3. Check continuity between ICC sensor integrated unit harness connector (A) and ICC brake hold relay harness connector (B).





4. Check continuity between ICC sensor integrated unit harness connector (A) and ground.





OK or NG
OK - GO TO 12.
NG - 1. Repair harness between ICC sensor integrated unit and ICC brake hold relay.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
12.CHECK ICC BRAKE HOLD RELAY GROUND CIRCUIT





Check continuity between ICC brake hold relay harness connector and ground.





OK or NG
OK - GO TO 13.
NG - 1. Repair or replace harness between ICC brake hold relay and ground.
2. Erase DTC and perform ICC system running test.
Then perform self-diagnosis of ICC system again.
13.CHECK ICC SENSOR INTEGRATED UNIT STANDARD VOLTAGE
With CONSULT-III
1. Connect ICC sensor integrated unit connector.
2. Turn ignition switch ON.





3. Perform "Active Test" ("STOP LAMP": "STP LMP DRIVE ON") with CONSULT-III, check voltage between ICC brake hold relay harness connector and ground.





OK or NG
OK - GO TO 14.
NG - 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
14.CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.





2. Check voltage between ICC brake hold relay harness connector and ground.





OK or NG
OK - GO TO 15.
NG - 1. Repair or replace harness or fuse.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
15.CHECK HARNESS BETWEEN ICC BRAKE HOLD RELAY AND ECM
1. Turn ignition switch OFF.
2. Disconnect ECM connector.





3. Check continuity between ICC brake hold relay harness connector (A) and ECM harness connector (B).















4. Check continuity between ICC brake hold relay harness connector (A) and ground.






OK or NG
OK - GO TO 16.
NG - 1. Repair harness between ICC brake hold relay and ECM.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
16.CHECK ICC BRAKE HOLD RELAY
With CONSULT-III
1. Connect ECM connector and ICC brake hold relay.
2. Disconnect stop lamp switch connector.
3. Perform "Active Test" ("STOP LAMP") with CONSULT-III, and make sure that stop lamp is illuminated.
OK or NG
OK - GO TO 17.
NG - 1. Replace ICC brake hold relay.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
17.CHECK STOP LAMP SWITCH WITH ABS DATA MONITOR
With CONSULT-III
With "ABS" "Data Monitor", check if "STOP LAMP SW" are operates normally.
OK or NG
OK - GO TO 18.
NG - GO TO 20.
18.PERFORM ECM SELF-DIAGNOSIS
With CONSULT-III
1. Perform "ENGINE"self-diagnosis. Refer to Testing and Inspection (for VQ35HR) or , "CONSULT-III Function" (for VK45DE).
2. Check if malfunction is indicated.
Is malfunction indicated?
YES - 1. Repair or replace applicable item.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
NO - GO TO 19.
19.PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS
With CONSULT-III
1. Perform "ABS" self-diagnosis. Refer to Scan Tool Testing and Procedures.
2. Check if malfunction is indicated.
Is malfunction indicated?
YES - 1. Repair or replace applicable item.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
NO - 1. Replace ICC sensor integrated unit, and adjust laser beam aiming.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
20.CHECK STOP LAMP SWITCH INSTALLATION AND ADJUSTMENT
Check stop lamp switch for proper installation, and adjust the switch if necessary. Refer to Procedures Removal and Replacement.
OK or NG
OK - GO TO 21.
NG - 1. Adjust stop lamp switch.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
21.CHECK STOP LAMP SWITCH
Check stop lamp switch. Refer to ICC Brake Switch and Stop Lamp Switch.
OK or NG
OK - GO TO 22.
NG - 1. Replace stop lamp switch.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
22.CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch connector.
3. Turn ignition switch ON.





4. Check voltage between stop lamp switch harness connector and ground.





OK or NG
OK - GO TO 23.
NG - 1. Repair or replace harness or fuse.
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.
23.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
(A) and ABS actuator and electric unit (control unit) harness connector (B).





4. Check continuity between stop lamp switch harness connector
(A) and ground.





OK or NG
OK - 1. Perform "ABS" self-diagnosis. Refer to Scan Tool Testing and Procedures.
2. After repairing or replacing applicable item, erase DTC and perform ICC system running test.
Then perform self-diagnosis of ICC system again.
NG - 1. Repair or replace harness between stop lamp switch and ABS actuator and electric unit (control unit).
2. Erase DTC and perform ICC system running test. Then perform self-diagnosis of ICC system again.