Reverse Lamp Relay

REVERSE LAMP RELAY

Component Function Check


1. CHECK REVERSE LAMP RELAY FUNCTION

1.Turn power switch ON.
2.Shift the selector lever in R position.
3.Check that the reverse lamp turns ON.
Is the inspection result normal?
YES- INSPECTION END
NO- Proceed to "Diagnosis Procedure" .


Diagnosis Procedure


1. CHECK REVERSE LAMP RELAY CONTROL CIRCUIT

1.Shift the selector lever in P position.
2.Turn power switch OFF.
3.Remove reverse lamp relay.
4.Turn power switch ON.
5.Check the voltage between reverse lamp relay harness connector terminals.





6.Shift the selector lever in R position.
7.Check the voltage between reverse lamp relay harness connector terminals.





Is the inspection result normal?
YES- GO TO 9.
NO- GO TO 2.

2. CHECK POWER ON POWER SUPPLY-I

Check the voltage between reverse lamp relay harness connector and ground.





Is the inspection result normal?
YES- GO TO 6.
NO- GO TO 3.

3. CHECK POWER ON POWER SUPPLY-II

Check the voltage between IPDM E/R harness connector and ground.





Is the inspection result normal?
YES- GO TO 5.
NO- GO TO 4.

4. CHECK FUSE

1.Turn power switch OFF.
2.Pull out #56 fuse.
3.Check that the fuse is not fusing.
Is the inspection result normal?
YES- Check power supply circuit for ignition power supply.
NO- Replace the fuse after repairing the applicable circuit.

5. CHECK POWER ON POWER SUPPLY CIRCUIT-I

1.Turn power switch OFF.
2.Disconnect IPDM E/R harness connector.
3.Check the continuity between reverse lamp relay harness connector and IPDM E/R harness connector.





Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Repair or replace error-detected parts.

6. CHECK REVERSE LAMP RELAY CONTROL SIGNAL CIRCUIT

1.Turn power switch OFF.
2.Disconnect VCM harness connector.
3.Check the continuity between reverse lamp relay harness connector and VCM harness connector.





4.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES- GO TO 7.
NO- Repair or replace error-detected parts.

7. CHECK VCM GROUND CIRCUIT

Check the continuity between VCM harness connector and ground.





Is the inspection result normal?
YES- GO TO 8.
NO- Repair or replace error-detected parts.

8. CHECK INTERMITTENT INCIDENT

Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
Is the inspection result normal?
YES- Replace VCM. Refer to "Removal and Installation" Removal And Installation.
NO- Repair or replace error-detected parts.

9. CHECK POWER ON POWER SUPPLY-III

Check the voltage between reverse lamp relay harness connector and ground.





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

10. CHECK POWER ON POWER SUPPLY CIRCUIT-II

1.Turn power switch OFF.
2.Disconnect IPDM E/R harness connector.
3.Check the continuity between reverse lamp relay harness connector and IPDM E/R harness connector.





Is the inspection result normal?
YES- Check intermittent incident. Refer to "Intermittent Incident" Intermittent Incident.
NO- Repair or replace error-detected parts.

11. CHECK REVERSE LAMP RELAY

Refer to "Component Inspection (Reverse Lamp Relay)" .
Is the inspection result normal?
YES- INSPECTION END
NO- Replace reverse lamp relay.


Component Inspection (Reverse Lamp Relay)


1. CHECK REVERSE LAMP RELAY

1.Turn power switch OFF.
2.Remove reverse lamp relay.





3.Check the continuity between reverse lamp relay terminals under the following conditions.





Is the inspection result normal?
YES- INSPECTION END
NO- Replace reverse lamp relay.