Windows: Description and Operation

A permanent magnet motor operates each of the Power Windows. Each Motor raises or lowers the window 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 Power Window Switch Assembly controls all four Motors. The other Window Switches control only the Window Motor in that door

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.


MASTER WINDOW SWITCH OPERATION

When the Ignition Switch is in RUN, battery voltage is applied to the Master Power Window Switch Assembly through the PWR WDO Circuit Breaker and the PNK (76) wire. When the LH Power Window UP Switch is operated, battery voltage is applied to the LH Window Motor through the DK BLU (164) wire. The Window Motor is grounded through the BRN (165) wire and the Window Switch DN contact. The Motor runs to drive the window up. When the DN Switch is operated, battery voltage is applied to the Window Motor in the opposite direction through the BRN (165) wire. The Window Motor is grounded through the DK BLU (164) wire and the Window Switch UP contact. The Motor runs to drive the window down.

INDIVIDUAL WINDOW SWITCH OPERATION

When the Ignition Switch is in RUN, battery voltage is applied to the other Window Switches through the PWR WDO Circuit Breaker and the PNK (76) wire to terminal A. When the UP Switch in a Window Switch is operated, battery voltage is applied to the Window Motor through the DK BLU (666, 668 or 670) wire. The Motor is grounded through the BRN (667, 669 or 671) wire, the DN contact in the Window Switch, the TAN (167) PPL (169) or PPL/WHT (171) wire and the DN contact in the Master 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 applied to the Window Motor in the opposite direction through the BRN (667, 669 or 671) wire. The Motor is grounded through the DK BLU (666, 668 or 670) wire, the UP contact in the Window Switch, the DK BLU/WHT (166) DK GRN (168) or LT GRN (170) wire and the UP contact in the Master Power Window Switch Assembly. The Motor runs to drive the window down.