Windows: Description and Operation

A permanent magnet (PM) motor operates each of the Power Windows. Each Motor raises or lowers the window when the voltage is supplied to it. The direction the Motor turns depends on the polarity of the supply voltage. The Switches control the supply voltage. The Switches control the supply voltage polarity.

The Master Door Lock/Power Window Switch Assembly controls all of the Windows Motors. Each window also has its own control switch.

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.

When the Ignition Switch is in RUN or ACC, battery voltage is supplied to the Master Door Lock/Power Window Switch Assembly, the ACC-IGN Circuit Breaker and the PNK (76) wires.

When any of the UP Switches are operated, battery voltage is supplied to the Window Motor through the DK BLU/WHT (166) wire. The Window Motor is grounded through the DN contact. The Motor runs to drive the window up. When any of the DN Switches are operated, battery voltage is supplied to the Window Motor in the opposite direction through the BRN (165) wire. The Window Motor is grounded through the UP contact. The Motor runs to drive the window down.

WINDOW SWITCH OPERATION

When the Ignition Switch is in RUN or ACC, battery voltage is supplied to the Window Switch through the ACC-IGN Circuit Breaker and the PNK (76) wires. When the UP Switch in the Window Switch is operated, battery voltage is supplied to the Window Motor through the DK BLU/WHT (166) wire. The Motor is grounded through the BRN (165) wire, the DN contact in the Window Switch, the TAN (167) wire and the DN contact in the Master Door Lock/Power Window Switch Assembly. The Motor runs to drive the window up. When the DN switch in the Window Switch is operated, battery voltage is supplied to the Window Motor in the opposite direction through the BRN (165) wire. The Motor is grounded through the DK BLU (164) wire, the UP contact in the Window Switch, the DK BLU/WHT (166) wire and the UP contact in the Master Door Lock/Power Window Switch Assembly. The Motor runs to drive the window down.

FRONT DOOR WINDOW SWITCH LAMPS

The front door power window switches have illumination lamps built into the switches. When the ignition switch is in ACC or RUN, battery voltage is supplied to the front door window switches through the GAGES fuse, PNK/BLK (39) and GRA (8) circuits.