Windows: Description and Operation

A Permanent Magnet (PM) Motor operates each of the power windows. Each motor raises or lowers the glass when voltage is supplied to it. The direction the motor turns depends on the polarity of the supply voltage. The switches control the supply voltage polarity.

The Master Switch Assembly is the source of ground for the other window switches.

Each motor is protected by a built-in circuit breaker. If a window switch is held too long with the window obstructed or after the window is fully up or down, the circuit breaker opens the circuit. The circuit breaker resets only after voltage is removed from the motor.

Master Switch Assembly Operation
When the Ignition Switch is in "RUN," battery voltage is applied to the Master Switch Assembly through the WDO Circuit Breaker and CKT 41. When any of the UP Switches in the Master Switch Assembly are operated, battery voltage is applied to the Window Motor. The Window Motor is grounded through the ON contact in the Master Switch Assembly. The motor runs to drive the window up. When any of the ON Switches in the Master Switch Assembly are operated battery voltage is applied to the Window Motor in the opposite direction. The Window Motor is grounded through the UP contact in the Master Switch Assembly. The motor runs to drive the window down.

If the LH Front ON Switch in the Master Switch Assembly is momentarily pressed down past the first detent, the window will travel to the fully down position.

Window Switch Operation
When the Ignition Switch is in "RUN," battery voltage is applied to the window switches through the WDO Circuit Breaker and CKT 41 to the switches. When the UP Switch in the RH Front Window Switch is operated, battery voltage is applied to the RH Front Window Motor through the DK BLU wire. The motor is grounded through the BRN wire and the ON contact in the RH Front Window Switch, TAN wire and the ON contact in the Master Switch Assembly The motor runs to drive the window up. When the ON Switch is operated, battery voltage is applied to the RH Front Window Motor in the opposite direction through the BRN wire. The Motor is grounded through the DK BLU wire, the UP contact in the RH Front Window Switch, the DK BLU wire, and the UP contact in the Master Switch Assembly. The motor runs to drive the window down The other windows operate similarly from their individual window switches.