P3112

DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PERFORM COMPONENT FUNCTION CHECK

.
NOTE:
Use component function check to check the overall function of the stop lamp switch circuit. During this check, a DTC might not be confirmed.
Is the inspection result normal?
YES- Proceed to .
NO- INSPECTION END


Component Function Check


1. PERFORM COMPONENT FUNCTION CHECK

With CONSULT
1.Select "STOP LAMP SW" in "DATA MONITOR" mode of "EV/HEV" using CONSULT.
2.Check that monitor indication as per the following condition.





Without CONSULT
1.Turn ignition switch OFF.
2.Check for stop lamp illumination as per the following condition.





Is the inspection result normal?
YES- INSPECTION END
NO- Proceed to .


Diagnosis Procedure


1. INSPECTION START

Check which type the vehicle is equipped with.
Which type?
Without ICC models-GO TO 2.
With ICC models-GO TO 6.

2. CHECK STOP LAMP SWITCH OPERATION

1.Turn ignition switch OFF.
2.Check the stop lamp when depressing and releasing the brake pedal.





Is the inspection result normal?
YES- Perform Intermittent Incident.
NO- GO TO 3.

3. CHECK STOP LAMP SWITCH POWER SUPPLY

1.Turn ignition switch OFF.
2.Disconnect stop lamp switch harness connector.
3.Check the voltage between stop lamp switch harness connector and ground.





Is the inspection result normal?
YES- GO TO 4.
NO- Perform trouble diagnosis for power supply circuit.

4. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT

1.Disconnect HPCM harness connector.
2.Check the continuity between stop lamp switch harness connector and HPCM harness connector.





3.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES- GO TO 5.
NO- Repair or replace error-detected parts.

5. CHECK STOP LAMP SWITCH

P1805.
Is the inspection result normal?
YES- Perform Intermittent Incident.
NO- Replace stop lamp switch. Exploded View.

6. CHECK STOP LAMP SWITCH OPERATION-1

1.Turn ignition switch OFF.
2.Check the stop lamp when depressing and releasing the brake pedal.





Is the inspection result normal?
YES- GO TO 7.
NO- GO TO 8.

7. CHECK STOP LAMP SWITCH OPERATION-2

1.Turn ignition switch ON.
2.Check the stop lamp when depressing and releasing the brake pedal.





Is the inspection result normal?
YES- GO TO 8.
NO- GO TO 9.

8. CHECK STOP LAMP SWITCH INPUT SIGNAL

Check the voltage HPCM harness connector terminals and ground as per the following conditions.





Is the inspection result normal?
YES- Perform Intermittent Incident.
NO- GO TO 10.

9. CHECK ICC BRAKE HOLD RELAY

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





Is the inspection result normal?
YES- GO TO 10.
NO- GO TO 11.

10. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect stop lamp switch harness connector.
3.Disconnect HPCM harness connector.
4.Check the continuity between stop lamp switch harness connector and HPCM harness connector.





5.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES- GO TO 12.
NO- Repair or replace error-detected parts.

11. CHECK ICC BRAKE HOLD RELAY

.
Is the inspection result normal?
YES- Check the harness between ICC brake hold relay and ADAS control unit. C1A13.
NO- Replace ICC brake hold relay.

12. CHECK STOP LAMP SWITCH

P1805.
Is the inspection result normal?
YES- Perform Intermittent Incident.
NO- Replace stop lamp switch. Removal and Installation.


Component Inspection (Stop Lamp Switch)


1. CHECK STOP LAMP SWITCH-1

1.Turn ignition switch OFF.
2.Disconnect stop lamp switch harness connector.
3.Check the continuity between stop lamp switch terminals as per the following conditions.





Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 2.

2. CHECK STOP LAMP SWITCH-2

1.Adjust stop lamp switch installation. (Adjustments.)
2.Check the continuity between stop lamp switch terminals as per the following conditions.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace stop lamp switch. Exploded View.


Component Inspection (Brake Hold Relay)


1. CHECK ICC BRAKE HOLD RELAY






Check the continuity between ICC brake hold relay terminals as per the following conditions.





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