Power Window Operation

The power window system is powered by a 20 Amp circuit breaker located in the junction block cavity 22.

The circuit breaker receives its feed from the ignition switch on the A22 circuit. This circuit breaker is HOT when the ignition switch is in the RUN position only.

Circuit F21 is the feed circuit from the circuit breaker to the power window switch. This circuit feeds the entire system. The ground path for the power windows is on the Z1 circuit and terminates at the instrument panel left side cowl.

A LOCK-OUT feature is provided on the driver's door window switch. When this feature is engaged the other windows in the system will not operate.

All of the door switches have a Light Emitting Diode (L.E.D.) located inside of the switch. This diode allows the operator to see the switch when it is dark. The diodes are powered at all times, except when the LOCK-OUT feature has been selected, from the drivers door switch. L.E.D.'s located in the driver's door switch will always be illuminated regardless of switch position.

Resistors and diodes internal to the switches are used for the L.E.D's. No attempt should be made to repair these items. If the L.E.D. is not working, the switch should be replaced.

The drivers master switch has a express down feature that latches the drivers window switch until the switch has reached the full DOWN position.