Windows: Description and Operation

A permanent magnet motor operates each of the Power Windows Each Motor raises or lowers the glass when voltage is supplied to it. The direction of the Motor turns depends on the polarity of the supply voltage provided through the switch.

The LH Front Power Window Master Switch controls all of the Window Motors. The Passenger 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 as it cools.

When the Ignition Switch is in RUN, battery voltage is supplied to the LH Front Power Window Master Switch through the YEL (343) wire.

When any of the UP Switches are operated, battery voltage is supplied to the Window Motor and 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. The Window Motor is grounded through the UP contact. The Motor runs to drive the window down.

LH Front Power Window Master Switch Operation
When the Ignition Switch is in the RUN position, battery voltage is supplied to the Window Switch through the WINDOWS Circuit Breaker and the YEL (343) wire. When the LH UP position in the Window Switch is pressed. Battery voltage is supplied to the LH Window Motor through the DK BLU (164) wire. The Motor is grounded through the BRN (165) wire, DN contact in the Window Switch. The Motor runs to drive the window up.

When the LH DN position in the Window Switch is pressed, Battery voltage is supplied to the Window Motor in the opposite direction through the BRN (165) wire. The Window Motor is grounded through the DK BLU (164) wire, the UP contact in the Window Switch. The DK BLU (166) wire and the UP contact in the Front Power Window Master Switch. The Motor runs to drive the window down.

When the RH UP position in the Window Switch is pressed, battery voltage is supplied to the RH Window Motor through the DK BLU (166) wire and the UP contact in the passenger Window Switch through the DK BLU (666) wire to the Window Motor. The Motor is grounded through the BRN (667) wire, DN contact in the Passenger Window Switch through the TAN (167) wire to the BLK (750) wire to Ground G105.

When the RH DN position in the Window Switch is pressed, battery voltage is supplied to the RH Window Motor on the opposite direction through the TAN (167) wire and the DN contact in the passenger Window Switch through the BRN (667) wire to the Window Motor. the Motor is grounded through the DK BLU (666) wire, UP contact in the passenger Window Switch through the LT BLU (166) wire and the UP contact in the Driver Window Switch to the BLK (750) wire to Ground G105.

RH Front Power Window Switch Operation
In the UP position, battery voltage is supplied through the DK BLU (666) wire, ground is supplied through the BRN (667) wire. In the DN position, this process is reversed. Battery voltage is supplied directly from the WINDOWS circuit breaker to the Switch, but all ground paths go through the LH Front Power Window Master Switch.