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).
All odd numbered pins of the switch(es) pushed forward should lose continuity to pin 3.
4. Push any or all four window switches rearward and hold in that position (toward rear of vehicle when in installed position).
All even numbered pins (4 through 10) of the switch(es) pushed rearward should lose continuity to pin 3.
5. Remove the test lead from pin 3 and connect it to pin 2 (hot feed pin).
With all switches in the NEUTRAL position, only pin 1 should have continuity to pin 2.
6. Push any one or all four switches forward and hold in that position.
All odd numbered pins of switches pushed forward should have continuity to pin 2.
7. Pull any one or all four switches rearward and hold in that position.
All even numbered pins of switches pulled rearward should have continuity to pin 2.
8. If any switch does not test as stated, replace the complete switch assembly.

Ford/Mercury Low Series

Figure 8 - Power Window Switches:

Testing of 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 terminal 3, which is grounded.
2. With all switches in the NEUTRAL position, terminals 4 through 11 should have continuity to terminal 3.
3. Push all four window switches upward (toward window of vehicle when in installed position).
All odd numbered terminals should lose continuity to terminal 3.
4. Push all four window switches downward (away from window when in installed position).
All even numbered terminals 4 through 10 should lose continuity to terminal 3.
5. Remove the test lead from terminal 3 and connect it to terminal 2 (hot feed terminal).
With all switches in the NEUTRAL position, only terminal 1 should have continuity to terminal 2.
6. Push all four switches upward and hold in that position.
All odd numbered terminals should have continuity to terminal 2.
7. Pull all four switches downward and hold in that position.
All even numbered terminals should have continuity to terminal 2.
8. Push the lock out switch to its detent position.
Terminal 2 should NOT have continuity with any other terminal.
9. If any one switch does not test as outlined, replace the complete switch assembly.