Testing and Inspection for LH Front Master Switch on Grand Marquis V8-255 42L (1982)
Power Window Switch: Testing and Inspection
LH Front Master Switch (4 Door)
Test Procedure
4-Door Models Except Low Series (see below)
Testing the power window master switch should be performed with the switch removed from the vehicle. Use a self-powered test lamp or an
ohmmeter.
1. Clip one test lead probe on pin 3 which is grounded.
2. With all switches in the NEUTRAL position, pins 4 through 11 should have continuity to pin 3.
3. Push any one or all four window switches forward and hold in that position (toward front of vehicle when in installed position).
