Diagnosis Procedure

TURN SIGNAL LAMP CIRCUIT


Description

BCM performs the high flasher operation (fail-safe) if any bulb or harness of the turn signal lamp circuit is open.

NOTE:
The turn signal lamp blinks at normal speed when using the hazard warning lamp.





TURN SIGNAL LAMP CIRCUIT


Diagnosis Procedure

1.CHECK TURN SIGNAL LAMP BULB
Check the applicable lamp bulb.
Is the bulb normal?
YES - GO TO 2.
NO - Replace the bulb.
2.CHECK TURN SIGNAL LAMP OPEN CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect BCM connector.
3. Disconnect the front turn signal lamp connector, side turn signal lamp connector, or the rear combination lamp connector.
4. Check continuity between the BCM harness connector and the front turn signal lamp, side turn signal lamp or the rear combination lamp harness connector.















Does continuity exist?
YES - GO TO 3.
NO - Repair the harnesses or connectors.
3.CHECK TURN SIGNAL LAMP SHORT CIRCUIT
Check continuity between the BCM harness connector and the ground.





Does continuity exist?
YES - Repair the harnesses or connectors.
NO - GO TO 4.
4.CHECK TURN SIGNAL LAMP GROUND OPEN CIRCUIT
Check continuity between the BCM harness connector and the front turn signal lamp, side turn signal lamp or the rear combination lamp and the ground.
















Does continuity exist?
YES - Replace BCM.
NO - Repair the harnesses or connectors.