Power Vent Windows

CIRCUIT OPERATION
The power vent window system is powered by two 9 Amp Positive Temperature Coefficients (PTC's). Both of the PTC's are located in the junction block, PTC locations seven and eight.

The PTC's receive there feed from the ignition switch on the A31 circuit. The PTC's are HOT when the ignition switch is in the ACCESSORY or RUN position only.

Circuit F21 is the feed circuit from PTC 8 to the power window and vent switch that feeds the left side windows. Circuit F55 is the feed circuit from PTC 9 to the power window and vent switch that feeds the right side windows.

The ground path for the power vent windows is on the Z1 circuit and terminates at the instrument panel left side cowl.