The hazard flashers may be activated in any power mode. The turn signal hazard flasher module controls the vehicle turn signals and hazard warning flashers based on inputs from the turn signal/multifunction switch. When the hazard switch is activated, ground from G400 is applied through both turn signal switch signal circuits to the turn signal hazard flasher module indicating the hazard flasher ON request. The module will then apply a pulsating battery voltage to the left and right turn signal lamp control circuits, cycling all turn signal lamps, and both instrument panel cluster (IPC) turn signal indicators ON and OFF.

Schematic Reference

Exterior Lights Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Exterior Lighting Systems Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, command the left and right turn signals ON and OFF using the turn signal multifunction switch. The exterior turn signal lamps and the IPC turn signal indicators should turn ON and OFF when changing between commanded states.

⇒	If the system does not perform as specified, refer to Turn Signal Lamps and/or Indicators Malfunction .

2. Activate the hazard warning flasher switch. All turn signal lamps should cycle ON and OFF until the hazard switch is turned OFF.

⇒	If hazard lamps are always ON or always OFF, replace the turn signal multifunction switch.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Turn Signal Multifunction Switch Replacement