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Combination Switch

  1. Unplug connectors from combination switch. Set hazard flasher switch to OFF position. Test for continuity between specified terminals with switch in each position. See Fig 1 . If continuity is not as specified, or is poor in any switch position, replace combination switch.
  2. To test turn signal switch, perform steps 3) through 5). To test headlight and dimmer switches, perform steps 6) through 11). To test hazard flasher switch, perform step 12). To test windshield wiper/washer switch, see WIPER/WASHER SYSTEMS article in the ACCESSORIES/SAFETY EQUIPMENT section.

    WIPER/WASHER SYSTEM - FRONT

    WIPER/WASHER SYSTEM - REAR

    Fig 1: Identifying Combination Switch Terminals
    G94A33209Courtesy of FORD MOTOR CO.
  3. Set turn signal lever to neutral position. Continuity should not exist between terminal No. 9 on 14-pin switch connector and terminals No. 2 and 6 on 6-pin switch connector.
  4. Set turn signal lever to left turn position. Continuity should exist between terminal No. 9 on 14-pin switch connector and terminal No. 2 on 6-pin switch connector. Continuity should not exist between terminal No. 9 on 14-pin connector and terminal No. 6 on 6-pin switch connector.
  5. Set turn signal lever to right turn position. Continuity should exist between terminal No. 9 on 14-pin switch connector and terminal No. 6 on 6-pin switch connector. Continuity should not exist between terminal No. 9 on 14-pin connector and terminal No. 2 on 6-pin switch connector.
  6. Pull and hold flash-to-pass switch toward steering wheel. With switch held in position, continuity should exist between terminals No. 3 and 4 on 6-pin switch connector. With switch released, continuity should not exist.
  7. Set dimmer switch to high beam position (away from steering wheel). Continuity should exist between terminals No. 3 and 5 on 6-pin switch connector. Continuity should not exist with switch in low beam position.
  8. Set dimmer switch to low beam position (toward steering wheel). Continuity should exist between terminals No. 1 and 5 on 6-pin switch connector. Continuity should not exist with switch in high beam position.
  9. Set headlight switch to OFF position. Continuity should not exist between terminals No. 3 and 8, or between terminals No. 2 and 3 on 14-pin switch connector.
  10. Set headlight switch to PARK position. Continuity should exist between terminals No. 2 and 3 on 14-pin switch connector. Continuity should not exist between terminals No. 3 and 8 on 14-pin switch connector.
  11. Set headlight switch to HEADLIGHT position. Continuity should exist between terminals No. 3 and 8, and between terminals No. 2 and 3 on 14-pin switch connector.
  12. Set hazard flasher switch to ON position. Continuity should exist between terminals No. 6 and 14 on 14-pin switch connector. Continuity should not exist with switch in OFF position.
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