LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 1996 >> Aerostar Van Window >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC System - Basic Trouble Shooting - Manual >> Diagnosis - Villager >> Front Heater Blower Motor Runs Continuously

Front Heater Blower Motor Runs Continuously

  1. Check Blower Motor Relay

    Test front heater blower motor relay. See MANUAL A/C-HEATER SYSTEMS - VILLAGER article. Replace relay if necessary. If relay is okay, go to next step.

  2. Check Yellow/Red Wire For Short To Ground

    Ensure ignition is off. Remove front heater blower motor relay. Disconnect A/C control panel 12-pin connector. Measure resistance of Yellow/Red wire between front heater blower motor relay and ground. Resistance should be greater than 10,000 ohms. Measure resistance of Yellow/Red wire between front heater blower motor relay and A/C control panel 12-pin connector. Resistance should be less than 5 ohms. If resistances are as specified, go to next step. If resistances are not as specified, repair Yellow/Red wire.

  3. Check Green Wire For Short To Ground

    Ensure ignition is off. Disconnect front heater blower motor, front heater blower motor switch, and front heater blower motor resistor connectors. Measure resistance of Green wire between front heater blower motor connector and ground. Resistance should be greater than 10,000 ohms. Measure resistance of Green wires between front heater blower motor connector, front heater blower motor switch, and front heater blower motor resistor connectors. Resistance should be less than 5 ohms. If resistances are as specified, go to next step. If resistances are not as specified, repair appropriate Green wire(s).

  4. Check Light Green/Red Wire For Short To Ground

    Ensure ignition is off. Disconnect front heater blower motor switch and front heater blower motor resistor connectors. Measure resistance of Light Green/Red wire between front heater blower motor switch connector and ground. Resistance should be greater than 10,000 ohms. Measure resistance of Light Green/Red wire between front heater blower motor switch connector and front heater blower motor resistor connector. Resistance should be less than 5 ohms. If resistance are as specified, go to next step. If resistances are not as specified, repair Light Green/Red wire.

  5. Check Yellow/Black Wire For Short To Ground

    Ensure ignition is off. Disconnect front heater blower motor switch and front heater blower motor resistor connectors. Measure resistance of Yellow/Black wire between front heater blower motor switch connector and ground. Resistance should be greater than 10,000 ohms. Measure resistance of Yellow/Black wire between front heater blower motor switch connector and front heater blower motor resistor connector. Resistance should be less than 5 ohms. If resistances are as specified, replace A/C control panel. If resistances are not as specified, repair Yellow/Black wire.
scientia non olet · About LEMON Manuals