Distance Control Assist System
C1A13 STOP LAMP RELAY
Description
- The ICC sensor integrated unit transmits the ICC brake hold relay drive signal to the brake booster control unit via ITS communication.
- The ICC brake hold relay activates the stop lamp by the ICC brake hold relay drive signal (stop lamp drive signal) outputted by the brake booster control unit.
DTC Logic
DTC DETECTION LOGIC
NOTE:
If DTC "C1A13" is detected along with DTC "U1000", first diagnose the DTC "U1000". Distance Control Assist System.
DTC CONFIRMATION PROCEDURE
1. PERFORM DTC CONFIRMATION PROCEDURE (1)
1.Start the engine.
2.Perform the active test item "STOP LAMP" with CONSULT.
3.Perform "All DTC Reading".
4.Check if the "C1A13" is detected as the current malfunction in the self-diagnosis results of "ICC/ADAS".
Is "C1A13" detected as the current malfunction?
YES- .
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 conditions, repeat the step 1.
2.Perform "All DTC Reading".
3.Check if the "C1A13" is detected as the current malfunction in the self-diagnosis results of "ICC/ADAS".
Is "C1A13" detected as the current malfunction?
YES- .
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.
Distance Control Assist System.
NO- GO TO 2.
2. CHECK STOP LAMP SWITCH AND ICC BRAKE SWITCH
Check that "STOP LAMP SW" and "BRAKE SW" operate normally in "DATA MONITOR" of "ICC/ADAS".
Is the inspection result normal?
YES- GO TO 12.
NO-1- When "BRAKE SW" operation is malfunctioning: GO TO 3.
NO-2- When "STOP LAMP SW" operation is malfunctioning: GO TO 9.
3. CHECK ICC BRAKE SWITCH INSTALLATION
1.Turn ignition switch OFF.
2.Check ICC brake switch for correct installation. Adjustments.
Is the inspection result normal?
YES- GO TO 4.
NO- Adjust ICC brake switch installation. Adjustments.
4. CHECK ICC BRAKE SWITCH
1.Disconnect ICC brake switch connector.
2.Check ICC brake switch. Brake SW/STOP Lamp Sw.
Is the inspection result normal?
YES- GO TO 5.
NO- Replace ICC brake switch.
5. CHECK ICC BRAKE HOLD RELAY
1.Remove ICC brake hold relay.
2.Check for continuity between ICC brake hold relay terminals.
Is the inspection result normal?
YES- GO TO 6.
NO- Replace ICC brake hold relay.
6. CHECK HARNESS BETWEEN ICC BRAKE HOLD RELAY AND ICC BRAKE SWITCH
1.Check for continuity between ICC brake hold relay harness connector and ICC brake switch harness connector.
2.Check for continuity between ICC brake hold relay harness connector and ground.
Is the inspection result normal?
YES- GO TO 7.
NO- Repair the harnesses or connectors.
7. CHECK HARNESS BETWEEN ECM AND ICC BRAKE SWITCH
1.Disconnect ECM connector.
2.Check for continuity between the ECM harness connector and ICC brake switch harness connector.
3.Check for continuity between ECM harness connector and ground.
Is the inspection result normal?
YES- GO TO 8.
NO- Repair the harnesses or connectors.
8. CHECK ICC BRAKE HOLD RELAY POWER SUPPLY CIRCUIT
1.Connect ECM connector.
2.Turn the ignition switch ON.
3.Check the voltage between ICC brake hold relay harness connector and ground.
Is the inspection result normal?
YES- GO TO 20.
NO- Repair ICC brake hold relay power supply circuit.
9. CHECK STOP LAMP FOR ILLUMINATION
1.Turn the ignition switch OFF.
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 10.
NO- Check the stop lamp circuit, and repair or replace the malfunctioning parts.
10. 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 20.
NO- GO TO 11.
11. CHECK ICC BRAKE HOLD RELAY
1.Remove ICC brake hold relay.
2.Check for continuity between ICC brake hold relay terminals.
Is the inspection result normal?
YES- GO TO 20.
NO- Replace ICC brake hold relay.
12. CHECK HARNESS BETWEEN BRAKE BOOSTER CONTROL UNIT AND ICC BRAKE HOLD RELAY
1.Turn ignition switch OFF.
2.Disconnect brake booster control unit connector and remove ICC brake hold relay.
3.Check for continuity between the brake booster control unit harness connector and ICC brake hold relay harness connector.
4.Check for continuity between brake booster control unit harness connector and ground.
Is the inspection result normal?
YES- GO TO 13.
NO- Repair the harnesses or connectors.
13. CHECK HARNESS BETWEEN ICC BRAKE HOLD RELAY AND GROUND
Check for continuity between ICC brake hold relay harness connector and ground.
Is the inspection result normal?
YES- GO TO 14.
NO- Repair the harnesses or connectors.
14. CHECK ICC BRAKE HOLD RELAY
Check resistance between ICC brake hold relay terminals.
Is the inspection result normal?
YES- GO TO 15.
NO- Replace ICC brake hold relay.
15. CHECK BRAKE BOOSTER CONTROL UNIT OUTPUT VOLTAGE
1.Connect the brake booster control 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 16.
NO- GO TO 21.
16. 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 17.
NO- Repair or replace ICC brake hold relay power supply circuit.
17. CHECK HARNESS BETWEEN ICC BRAKE HOLD RELAY AND ECM
1.Disconnect ECM, rear combination lamp, and high-mounted stop lamp connectors.
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 18.
NO- Repair the harnesses or connectors.
18. CHECK ICC BRAKE HOLD RELAY
1.Connect ECM, rear combination lamp, and high-mounted stop lamp connectors and ICC brake hold relay.
2.Disconnect the 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 19.
NO- Replace ICC brake hold relay.
19. CHECK ICC BRAKE SWITCH STANDARD VOLTAGE
1.Turn ignition switch OFF.
2.Connect the stop lamp switch connector.
3.Turn ignition switch ON.
4.Perform "STOP LAMP" on "Active Test" of "ICC/ADAS", and then check the voltage between ICC brake switch harness connector and ground.
Is the inspection result normal?
YES- GO TO 20.
NO- Replace ICC brake hold relay.
20. 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". A L L Diagnostic Trouble Codes ( DTC ).
Is any DTC detected?
YES- Repair or replace the malfunctioning parts identified by the self-diagnosis result.
NO- GO TO 21.
21. CHECK ICC BRAKE HOLD RELAY DRIVE SIGNAL OUTPUT
1.Select the active test item "STOP LAMP" of "ICC/ADAS".
2.Check that "STP LMP DRIVE" is turned ON when operating the test item.
Is the inspection result normal?
YES- Replace brake booster control unit.
NO- Replace the ICC sensor integrated unit. Distance Control Assist System.
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 DCA SYSTEM
1.Erase the "self-diagnosis results", and then perform "All DTC Reading" again after performing the action test. (Description (Distance Control Assist) for action test.)
2.Check that the DCA system is normal.
- WORK END