Xenon Type

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 OUTPUT VOLTAGE
1. Turn the ignition switch OFF.
2. Disconnect the front turn signal lamp connector or the rear combination lamp connector.
3. Turn the ignition switch ON.
4. With operating the turn signal switch, check the voltage between the BCM harness connector and the ground.






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











Does continuity exist?
YES - GO TO 4.
NO - Repair the harnesses or connectors.
4.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 5.
5.CHECK TURN SIGNAL LAMP GROUND OPEN CIRCUIT
Check continuity between the front turn signal lamp, or the rear combination lamp and the ground.










Does continuity exist?
YES - Replace the front combination lamp or the rear combination lamp.
NO - Repair the harnesses or connectors.