Diagnosis Procedure

HAZARD SWITCH


Description

Hazard switch is integrated in the multifunction switch. Hazard switch inputs the signals to BCM when pressing the switch.




HAZARD SWITCH


Diagnosis Procedure

1.CHECK HAZARD SWITCH SIGNAL INPUT
With operating the hazard switch, check the voltage between the BCM harness connector and the ground.





Is the measurement value normal?
YES - Replace BCM.
NO - GO TO 2.
2.CHECK HAZARD SWITCH SIGNAL OPEN CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the multifunction switch connector and BCM connector.
3. Check continuity between the multifunction switch harness connector and the BCM harness connector.





Does continuity exist?
YES - GO TO 3.
NO - Repair the harnesses or connectors.
3.CHECK HAZARD SWITCH SIGNAL SHORT CIRCUIT
Check continuity between the multifunction switch harness connector and the ground.





Does continuity exist?
YES - Repair the harnesses or connectors.
NO - GO TO 4.
4.CHECK HAZARD SWITCH GROUND OPEN CIRCUIT
Check continuity between the multifunction switch harness connector and the ground.





Does continuity exist?
YES - Replace the hazard switch (multifunction switch).
NO - Repair the harnesses or connectors.