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Home >> Ford >> 1996 >> Aerostar Van Window >> Repair and Diagnosis >> External Pages >> Different car >> Section 186 (A/C-Heater System - Manual) >> Testing >> Front Auxiliary Blower Switch

Front Auxiliary Blower Switch

WARNING: This page is about a different car, the 1995 Ford Aerostar. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove blower switch. See BLOWER SWITCH  under REMOVAL & INSTALLATION. With blower switch connector removed, use self-powered test light or ohmmeter to test switch condition.
  2. To test rear select circuit, connect self-powered test light between Brown/Yellow wire and Black wire terminals. With blower switch in REAR CTRL position, continuity should be present. Continuity should not be present with blower switch in any other position. Replace switch if it does not test correctly.
  3. To test low speed circuit, connect self-powered test light between Yellow/Red wire and Black wire terminals. With blower switch in LO position, continuity should be present. Continuity should not be present with blower switch in any other position. Replace switch if it does not test correctly.
  4. To test medium speed circuit, connect self-powered test light between Dark Blue/White wire and Black wire terminals. With blower switch in medium position, continuity should be present. Continuity should not be present with blower switch in any other position. Replace switch if it does not test correctly.
  5. To test high speed circuit, connect self-powered test light between Orange/Red wire and Black wire terminals. With blower switch in HI position, continuity should be present. Continuity should not be present with blower switch in any other position. Replace switch if it does not test correctly.
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