Multifunction Switch - Description

DESCRIPTION





The multi-function switch is located on the left side of the steering column, just below the steering wheel. This switch is the primary control for the front and rear wiper and washer systems, the turn signals and headlamp beam selection. The only visible components of the switch are the control stalk (3), control knob (1) and control sleeve (2) that extend through the steering column shrouds on the left side of the column. The remainder of the switch including its mounting provisions, its electrical connections and the turn signal cancel actuator are concealed beneath the shrouds.

The switch housing and controls are constructed of molded black plastic. Each of the switch controls has white International Control and Display Symbol graphics applied to it, which clearly identify its many functions. The multi-function switch for this vehicle is integral to the Steering Column Control Module (SCCM).





The SCCM is located near the top of the steering column below the steering wheel. The SCCM includes the steering column shroud (1), the Steering Angle Sensor (SAS) (2), the clockspring (3), the multi-function switch (6), a steering column power tilt and telescope switch (5) for vehicles so equipped, a trim cover (4) and the Steering Control Module (SCM). The SCCM includes an integral connector receptacle that faces toward the instrument panel and is connected to the vehicle electrical system through a single take out and connector of the instrument panel wire harness.

The multi-function switch provides the vehicle operator with a control interface for the following functions:

- Front Washer Control - The multi-function switch control knob provides a momentary WASH position for washer system operation.
- Front Wiper Control - The multi-function switch control knob provides detent switching for two continuous wipe switch positions, LO speed or HI speed, and an intermittent wipe mode with four delay interval positions. The four delay positions become four sensitivity positions for vehicles equipped with the optional automatic wiper system. The control knob also has a momentary MIST or pulse wipe feature switch position.
- Headlamp Beam Selection - The multi-function switch control stalk provides detent switching for selection of the headlamp HIGH or LOW beams.
- Headlamp Optical Horn - The multi-function switch control stalk includes momentary switching of the headlamp high beam circuits to provide an optical horn feature (sometimes referred to as flash-to-pass), which allows the vehicle operator to momentarily flash the headlamp high beams as an optical signalling device.
- Turn Signal Control - The multi-function switch control stalk provides both momentary non-detent (lane change) switching or detent switching with automatic cancellation for both the left and right turn signals.
- Rear Washer Control - The multi-function switch control sleeve provides a momentary WASH position for washer system operation.
- Rear Wiper Control - The multi-function switch control sleeve provides detent switching for a continuous wipe ON position and a fixed delay intermittent (INT) wipe position.

The multi-function switch cannot be adjusted or repaired. If any function of the switch is ineffective, or if the switch is damaged, the entire SCCM unit must be replaced. Steering Column Module - Removal.