Cruise Control System
C1A13 STOP LAMP RELAY
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
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.
Is the inspection result normal?
YES - GO TO 4.
NO - Adjust stop lamp switch installation. Inspection.
4.CHECK STOP LAMP SWITCH
1. Disconnect stop lamp switch connector.
2. Check stop lamp switch. Brake Switch/Stop Lamp Switch.
Is the inspection result normal?
YES - GO TO 5.
NO - Replace stop lamp switch.
5.CHECK STOP LAMP FOR ILLUMINATION
1. Turn the ignition switch OFF.
2. Check that the stop lamp is illuminated by depressing the brake pedal to turn the stop lamp ON.
3. Remove ICC brake hold relay.
Is the inspection result normal?
YES - GO TO6.
NO - Check the stop lamp circuit, and repair or replace the malfunctioning parts.
6.CHECK HARNESS BETWEEN STOP LAMP SWITCH AND ECM
1. Turn the ignition switch OFF.
2. Disconnect stop lamp switch, ECM, rear combination lamp, and high-mounted stop lamp connectors.
3. Check for continuity between the stop lamp switch harness connector and the ECM harness connector.
4. Check for continuity between stop lamp switch harness connector and ground.
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.
2. Disconnect the stop lamp switch connector.
3. 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(VQ37VHR) or Testing and Inspection (VK56VD).
Is any DTC detected?
YES - Repair or replace the malfunctioning parts identified by the self-diagnosis result.
NO - Replace ADAS control unit. Service and Repair.
10.CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Remove ICC brake hold relay.
3. Check the voltage between ICC brake hold relay harness connector and ground.
Is the inspection result normal?
YES - GO TO 11.
NO - Repair or replace ICC brake hold relay power supply circuit.
11.CHECK HARNESS BETWEEN AND ICC BRAKE HOLD RELAY AND ADAS CONTROL UNIT
1. Disconnect ADAS control unit connectors.
2. Check for continuity between ICC brake hold relay harness connector and ADAS control unit harness connector.
3. Check for continuity between ADAS control unit harness connector and ground.
Is the inspection result normal?
YES - GO TO 12.
NO - Repair the harnesses or connectors.
12.CHECK ADAS CONTROL UNIT STANDARD VOLTAGE
1. Connect all connectors again if the connectors are disconnected.
2. Turn ignition switch ON.
3. Perform "STOP LAMP" on "Active Test" of "ICC/ADAS", and then check the voltage between ADAS control unit harness connector and ground.
Is the inspection result normal?
YES - GO TO 13.
NO - Replace ADAS control unit. Service and Repair.
13.CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Check the 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 connectors and remove ICC brake hold relay.
2. Check for continuity between ICC brake hold relay harness connector and ECM harness connector.
3. Check for 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. Remove ICC brake hold relay.
2. Check ICC brake hold relay. SEE Component Inspection.
Is the inspection result normal?
YES - GO TO 16.
NO - Replace ICC brake hold relay.
16.CHECK STOP LAMP SWITCH
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.
Is the inspection result normal?
YES - GO TO 18.
NO - Adjust stop lamp switch installation. Inspection.
18.CHECK STOP LAMP SWITCH
1. Disconnect stop lamp switch connector.
2. Check stop lamp switch. Brake Switch/Stop Lamp Switch.
Is the inspection result normal?
YES - GO TO 19.
NO - Replace stop lamp switch.
19.CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Connect stop lamp switch connector.
2. Check the 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 the ignition switch OFF.
2. Disconnect stop lamp switch, ABS actuator and electric unit (control unit) connectors.
3. Check for continuity between the stop lamp switch harness connector and the ABS actuator and electric unit (control unit) harness connector.
4. Check for continuity between stop lamp switch harness connector and ground.
Is the inspection result normal?
YES - GO TO 21.
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(VQ37VHR) or Testing and Inspection (VK56VD).
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 ADAS control unit. Service and Repair.
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.