Diagnosis Procedure

LANE DEPARTURE WARNING BUZZER CIRCUIT


Diagnosis Procedure

1.CHECK LANE DEPARTURE WARNING BUZZER POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the lane departure warning buzzer connector.
3. Turn ignition switch ON.
4. Check voltage between the lane departure warning buzzer harness connector and ground.





Is the measurement value normal?
YES - GO TO 2.
NO - Check harness between fuse and lane departure warning buzzer.
2.CHECK LANE DEPARTURE WARNING BUZZER GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between lane departure warning buzzer harness connector and ground.





Does continuity exist?
YES - GO TO 3.
NO - Repair the harnesses or connectors.
3.CHECK LANE DEPARTURE WARNING BUZZER SIGNAL CIRCUIT FOR OPEN
1. Disconnect the lane camera unit connector.
2. Check continuity between the lane camera unit harness connector and lane departure warning buzzer harness connector.





Does continuity exist?
YES - GO TO 4.
NO - Repair the harnesses or connectors.
4.CHECK LANE DEPARTURE WARNING BUZZER SIGNAL CIRCUIT FOR SHORT
Check continuity between the lane camera unit harness connector and ground.





Does continuity exist?
YES - Repair the harnesses or connectors.
NO - GO TO 5.
5.CHECK LANE DEPARTURE WARNING BUZZER OPERATION
1. Connect lane departure warning buzzer connector.
2. Turn ignition switch ON.
3. Apply ground to lane departure warning buzzer terminal 2.
4. Check condition of the lane departure warning buzzer.
Does lane departure warning buzzer sound?
YES - Replace the lane camera unit.
NO - Replace lane departure warning buzzer.