Hazard Switch

HAZARD SWITCH

Description

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


Component Function Check


1. CHECK HAZARD SWITCH SIGNAL BY CONSULT

CONSULT DATA MONITOR
1.Turn the ignition switch ON.
2.Select "HAZARD SW" of BCM (FLASHER) data monitor item.
3.With operating the hazard switch, check the monitor status.





Is the item status normal?
YES- Hazard switch circuit is normal.
NO- Refer to "Diagnosis Procedure" .


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.