Hazard Warning Lamps: Description and Operation

TURN SIGNAL & HAZARD WARNING SYSTEM
The turn signal and hazard warning system includes the following major components, which are described in further detail elsewhere in this service information:
- Combination Flasher
- Hazard Warning Switch
- Turn Signal Cancel Cam
- Turn Signal Indicators
- Turn Signal Lamps
- Turn Signal Switch

Hard wired circuitry connects the turn signal and hazard warning system components to each other through the electrical system of the vehicle. Refer to the appropriate wiring information.

The turn signal system operates on battery current received on a fused ignition switch output (run-acc) circuit so that the turn signals will only operate with the ignition switch in the ON or Accessory positions. The hazard warning system operates on non-switched battery current received on a fused B(+) circuit so that the hazard warning remains operational regardless of the ignition switch position. When the turn signal system is activated, the circuitry of the turn signal switch and the combination flasher will cause the selected turn signal indicator, front park/turn signal lamp, and rear tail/stop/turn signal lamp to flash ON and OFF. When the hazard warning system is activated, the circuitry of the hazard warning switch and the combination flasher will cause both the right side and the left side turn signal indicators, front park/turn signal lamps, and rear tail/stop/turn signal lamps to flash ON and OFF.

The hard wired circuits of the turn signal and hazard warning system can be diagnosed using conventional diagnostic tools and methods.