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Turn Signal Switch: Description and Operation

MULTI-FUNCTION SWITCH
Turn Signal System
The Turn Signal System consists of the Multi-Function Switch, Combination Flasher, and Turn Signal Lamps.

With the ignition switch in the ON position, and the multi-function switch control lever moved up (right turn) or down (left turn), the turn signal system is activated.

When the turn signal system is activated, the selected (right or left) turn signal indicator lamp, front park/turn signal lamp, front side marker lamp, and rear tail/stop/turn signal lamp bulbs will flash.

The switch has a detent position in each direction that provides turn signals with automatic cancellation, and an intermediate momentary position that provides turn signals only until the multi-function switch lever is released.

When the turn signal switch is in a detent position, it is turned off by one of two cancelling cam lobes molded into the hub of the clock spring mechanism. When turning the steering wheel causes one of the cam lobes to contact a cancel actuator in the multi-function switch, the turn signal switch automatically returns to the OFF position.

Multi-Function Switch:




Multi-function Switch
The multi-function switch assembly is mounted to the left side of the steering column. This switch contains circuitry for the following functions:
- Turn signals
- Hazard warning
- Headlamp beam selection
- Headlamp optical horn
- Windshield wipers
- Windshield washers.

The information addresses only the switch functions for the turn signal and hazard warning circuits. However, the multi-function switch cannot be repaired. If any function of the switch is faulty, the entire switch assembly must be replaced.