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Home >> Infiniti >> 2011 >> G37 Convertible V6-3.7L (VQ37VHR) >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> C Code Charts >> C1A13

C1A13


C1A13 STOP LAMP RELAY





Description
The ICC brake hold relay activates the stop lamp by the ICC brake hold relay drive signal (stop lamp drive signal) outputted by the ICC sensor integrated unit.




DTC Logic

DTC DETECTION LOGIC






NOTE:
If DTC "C1A13" is detected along with DTC "U1000", first diagnose the DTC "U1000". Cruise Control.

DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE (1)
1. Start the engine.
2. Perform the active test item "STOP LAMP" with CONSULT-III.
3. Perform "All DTC Reading".
4. Check if the "C1A13" is detected as the current malfunction in the "Self Diagnostic Result" of "ICC/ADAS".
Is "C1A13" detected as the current malfunction?
YES - SEE Diagnosis Procedure.
NO - GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE (2)
1. Drive at the vehicle speed of 40 km/h (25 MPH) or more for approximately 20 seconds or more without the brake pedal depressed.

CAUTION:
Always drive safely.

NOTE:
If it is outside the above condition, repeat step 1.
2. Perform "All DTC Reading".
3. Check if the "C1A13" is detected as the current malfunction in the "Self Diagnostic Result" of "ICC/ADAS".
Is "C1A13" detected as the current malfunction?
YES - SEE Diagnosis Procedure.
NO - Intermittent Incident.




Diagnosis Procedure
1.CHECK SELF-DIAGNOSIS RESULTS
Check if "U1000" is detected other than "C1A13" in "Self Diagnostic Result" of "ICC/ADAS".
Is "U1000" detected?
YES - Perform the CAN communication system inspection. Repair or replace the malfunctioning parts. Cruise Control.
NO - GO TO 2.
2.CHECK STOP LAMP SWITCH WITH ICC DATA MONITOR
Check that "STOP LAMP SW" operate normally in "DATA MONITOR" of "ICC/ADAS".
Is the inspection result normal?
YES - GO TO 10.
NO - GO TO 3.
3.CHECK STOP LAMP SWITCH INSTALLATION
1. Turn ignition switch OFF.
2. Check stop lamp switch for correct installation. Inspection and Adjustment.
Is the inspection result normal?
YES - GO TO 4.
NO - Adjust stop lamp switch installation. Inspection and Adjustment.
4.CHECK STOP LAMP SWITCH
1. Disconnect stop lamp switch connector.
2. Check stop lamp switch. C1A05.
Is the inspection result normal?
YES - GO TO 5.
NO - Replace stop lamp switch.
5.CHECK STOP LAMP ILLUMINATION
1. Connect stop lamp switch connector.
2. Remove ICC brake hold relay.
3. Check that the stop lamp is illuminated by depressing the brake pedal to turn the stop lamp ON.
Is the inspection result normal?
YES - GO TO 6.
NO - Repair the harnesses or connectors.
6.CHECK HARNESS BETWEEN STOP LAMP SWITCH AND ECM
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch connector and ECM connector.
3. Check for continuity between the stop lamp switch harness connector and ECM harness connector.





Is the inspection result normal?
YES - GO TO 7.
NO - Repair the harnesses or connectors.
7.CHECK ICC BRAKE HOLD RELAY CIRCUIT
1. Connect ICC brake hold relay and ECM connector.
2. Check that the stop lamp does not illuminate when brake pedal is not depressed.
Is the inspection result normal?
YES - GO TO 9.
NO - GO TO 8.
8.CHECK ICC BRAKE HOLD RELAY
1. Remove ICC brake hold relay.
2. Check ICC brake hold relay. SEE Component Inspection.
Is the inspection result normal?
YES - GO TO 9.
NO - Replace ICC brake hold relay.
9.PERFORM SELF-DIAGNOSIS OF ECM
1. Connect all connectors again if the connectors are disconnected.
2. Turn ignition switch ON.
3. Perform "All DTC Reading".
4. Check if any DTC is detected in "Self Diagnostic Result" of "ENGINE". Testing and Inspection.
Is any DTC detected?
YES - Repair or replace the malfunctioning parts identified by the self-diagnosis result.
NO - Replace ICC sensor integrated unit. Exploded View.
10.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 remove ICC brake hold relay.
3. Check for continuity between ICC sensor integrated unit harness connector and ICC brake hold relay harness connector.





4. Check for continuity between ICC sensor integrated unit harness connector and ground.





Is the inspection result normal?
YES - GO TO 11.
NO - Repair the harnesses or connectors.
11.CHECK ICC BRAKE HOLD RELAY GROUND CIRCUIT
Check for continuity between ICC brake hold relay harness connector and ground.





Is the inspection result normal?
YES - GO TO 12.
NO - Repair the harnesses or connectors.
12.CHECK ICC SENSOR INTEGRATED UNIT STANDARD VOLTAGE
1. Connect ICC sensor integrated unit connector.
2. Turn ignition switch ON.
3. Perform "STOP LAMP" on "Active Test" of "ICC/ADAS", and then check the voltage between ICC brake hold relay harness connector and ground.





Is the inspection result normal?
YES - GO TO 13.
NO - Replace ICC sensor integrated unit. Exploded View.
13.CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Check voltage between ICC brake hold relay harness connector and ground.





Is the inspection result normal?
YES - GO TO 14.
NO - Repair or replace ICC brake hold relay power supply circuit.
14.CHECK HARNESS BETWEEN ICC BRAKE HOLD RELAY AND ECM
1. Disconnect ECM, rear combination lamp and high-mounted stop lamp connector.
2. Check continuity between ICC brake hold relay harness connector and ECM harness connector.





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





Is the inspection result normal?
YES - GO TO 15.
NO - Repair the harnesses or connectors.
15.CHECK ICC BRAKE HOLD RELAY
1. Connect ECM, rear combination lamp and high-mounted stop lamp connector and ICC brake hold relay.
2. Disconnect stop lamp switch connector.
3. Turn ignition switch ON.
4. Perform "STOP LAMP" on "Active Test" of "ICC/ADAS", and then check the stop lamp for illumination.
Is the inspection result normal?
YES - GO TO 16.
NO - Replace ICC brake hold relay.
16.CHECK STOP LAMP SWITCH WITH ABS DATA MONITOR
Check that "STOP LAMP SW" operate normally in "DATA MONITOR" of "ABS".
Is the inspection result normal?
YES - GO TO 21.
NO - GO TO 17.
17.CHECK STOP LAMP SWITCH INSTALLATION
1. Turn ignition switch OFF.
2. Check stop lamp switch for correct installation. Inspection and Adjustment.
Is the inspection result normal?
YES - GO TO 18.
NO - Adjust stop lamp switch installation. Inspection and Adjustment.
18.CHECK STOP LAMP SWITCH
1. Disconnect stop lamp switch connector.
2. Check stop lamp switch. C1A05.
Is the inspection result normal?
YES - GO TO 19.
NO - Replace stop lamp switch.
19.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 20.
NO - Repair or replace stop lamp switch power supply circuit.
20.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 for 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 22.
NO - Repair the harnesses or connectors.
21.PERFORM SELF-DIAGNOSIS OF ECM
1. Connect all connectors again if the connectors are disconnected.
2. Turn ignition switch ON.
3. Perform "All DTC Reading".
4. Check if any DTC is detected in "Self Diagnostic Result" of "ENGINE". Testing and Inspection.
Is any DTC detected?
YES - Repair or replace the malfunctioning parts identified by the self-diagnosis result.
NO - GO TO 22.
22.PERFORM SELF-DIAGNOSIS OF ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
1. Connect all connectors again if the connectors are disconnected.
2. Turn ignition switch ON.
3. Perform "All DTC Reading".
4. Check if any DTC is detected in "Self Diagnostic Result" of "ABS". Testing and Inspection.
Is any DTC detected?
YES - Repair or replace the malfunctioning parts identified by the self-diagnosis result.
NO - Replace ICC sensor integrated unit. Exploded View.




Component Inspection
1.CHECK ICC BRAKE HOLD RELAY





Apply battery voltage to ICC brake hold relay terminals 1 and 2, and then check for continuity under the following conditions.





Is the inspection result normal?
YES - INSPECTION END
NO - Replace ICC brake hold relay.




Special Repair Requirement

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. Description.
- GO TO 2.
2.CHECK ICC SYSTEM
1. Erase the "Self Diagnostic Result", and then perform "All DTC Reading" again after performing the action test. ( Description for action test.)
2. Check that the ICC system is normal.
- WORK END
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