Master Switch

Master Switch - Crown Victoria, Grand Marquis

Master Window Switch - Pin Identification:

Testing the master window regulator control switch should be performed with the window regulator control switch removed from the vehicle. Use a self-powered test lamp or an ohmmeter.

1. Clip one test lead probe on pin 6 which is grounded.

2. With all window regulator control switches in the NEUTRAL position, pins 15 through 18 should have continuity to pin 6.

3. Push all four window regulator control switches forward and hold in that position (toward front of vehicle when in installed position). Pins 10, 9,15 and 16 should lose continuity to pin 6.

4. Push all four window regulator control switches rearward and hold in that position (toward rear of vehicle when in installed position). Pins 11,17,16 and 18 should lose continuity to pin 6.

5. Remove the test lead from pin 6 and connect it to pin 5 (hot feed pin). With all window regulator control switches in the NEUTRAL position, only pin 20 should have continuity to pin 5.

6. Push all four window regulator control switches forward and hold in that position. Pins 16,15,9 and 10 should have continuity to pin 6.

7. Pull all four window regulator control switches rearward and hold in that position. Pins 18,8,8, and 18 should have continuity to pin 6.

8. Push the lock-out switch to its detent position. Pin 6 should not have continuity with any other pin.

9. If any window regulator control switch does not test as stated, replace the complete window regulator control switch.