Power Windows: Description

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 in which the motor turns depends on the polarity of the supply voltage. The switches control the supply voltage polarity.

The left hand door switch assembly controls both motors. The right hand door switch assembly controls only the right hand window motor.

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 automatically as it cools.

When the ignition switch is in RUN, the Retained Accessory Power (RAP) relays are turned on by the Body Computer Module (BCM). Battery voltage is applied through circuit breaker 21, YEL/BLK (660) wire RAP Relay, and the RED/WHT (76) wires to the left hand and right hand door switch assemblies. If the relay fails, the left hand and right hand door switch assemblies are powered through circuit breaker 23.