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Home >> Mazda >> 1993 >> MX-3 Base, Automatic >> Repair and Diagnosis >> Body & Frame >> Power Windows >> System Testing >> Symptom No. 1
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Symptom No. 1

  1. Turn ignition on. Check 30-amp power window fuse in fuse block, near left kick panel. If fuse is okay, go to next step. If fuse is blown, replace fuse (repair wiring if necessary).
  2. Check voltage at Black/White wire terminal of main switch connector. If battery voltage is present, go to next step. If battery voltage is not present, repair Black/White wire between fuse and main switch.
  3. Disconnect main switch connector. Check continuity between ground and Black wire terminal of main switch connector. If there is continuity, reconnect main switch connector and go to next step. If there is no continuity, repair Black wire.
  4. At main switch connector, check voltage at the following terminals. If battery voltage is present at all terminals, go to next step. If battery voltage is not present at all terminals, replace main switch.
    • Red/Black wire (driver's switch in UP position)
    • Red/Green wire (driver's switch in DOWN position)
    • Green/White wire (main switch/passenger's in UP position)
    • Red/White wire (main switch/passenger's in DOWN position).
  5. At driver's window motor connector, check voltage at Red/Black wire terminal (driver's switch in UP position) and Red/Green wire terminal (driver's switch in DOWN position). If battery voltage is not present at both terminals, repair wiring between main switch and driver's window motor. If battery voltage is present at both terminals, replace driver's window motor.
    NOTE: If passenger's window motor is still inoperative after repairing driver's window motor, go to next step.
  6. At sub-switch connector, check voltage at Green/White wire terminal (main switch/passenger's in UP position) and Red/White wire terminal (main switch/passenger's in DOWN position). If battery voltage is present at both terminals, go to next step. If battery voltage is not present at both terminals, repair wiring between main switch and sub-switch.
  7. At sub-switch connector, check voltage at Red wire terminal (main switch/passenger's in UP position) and Green wire terminal (main switch/passenger's in DOWN position). If battery voltage is present at both terminals, go to next step. If battery voltage is not present at both terminals, replace sub-switch.
  8. At passenger's window motor connector, check voltage at Red wire terminal (main switch/passenger's in UP position) and Green wire terminal (main switch/passenger's in DOWN position). If battery voltage is present at both terminals, replace passenger's window motor. If battery voltage is not present at both terminals, repair wiring between sub-switch and window motor.
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