Master Switch, Aerostar
Testing of the power window multiple switch should be performed with the switch removed from the vehicle. Use a self-powered test lamp or an ohmmeter such as Rotunda Digital Volt-Ohmmeter 014-00407 or equivalent.
- Clip one test lead probe on terminal No. 6 which is grounded.
- With both switches in the neutral position, terminals No. 1 through 4 should have continuity to terminal No. 6. See Fig 1.
- Push both window switches upward (toward window when in installed position). Both terminals No. 1 and 3 should have no continuity to terminal No. 6.
- Push both window switches downward (away from window when in installed position). Both terminals No. 2 and 4 should have no continuity to terminal No. 6.
- Remove the test lead from terminal No. 6 and connect to terminal No. 5 (hot feed terminal). With both switches in the neutral position, terminal No. 5 should have continuity only with itself.
- Push both window switches upward (toward the window when in installed position). Both terminals No. 1 and 3 should have continuity to terminal No. 5.
- Push both window switches downward (away from the window when in installed position). Both terminals No. 2 and 4 should have continuity to terminal No. 5.
- If any one switch does not test as stated, replace the complete switch assembly.