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Many of Ford’s manual air conditioning systems use an electronic blend door actuator (motor) to control the temperature of the air entering the passenger compartment. The temperature knob on the A/C–Heater control panel is a variable resister (potentiometer) which varies a voltage signal to the motor. This signal determines blend door movement. Complaints of temperature always hot, cold or not changing as the temperature knob is rotated will be caused by one of four problems: 1) bad actuator; 2) bad potentiometer; 3) open or shorted wire(s); 4) broken door. A digital volt/ohm meter (DVOM) is required for testing. The motor has an eight pin connector with five wires. With the connector unplugged and the ignition switch in the run position, check: 1. 2. 3. 4. Battery voltage on pin #7 Proper ground on pin #8 Continuity between pin #4 and pin #6 Varying continuity between pin #3 and #4 or between #3 and #6 as the potentiometer is Continue to download »
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Accessories and Modifications 5 3 Accessory Power Outlets 3 19 Adding Equipment to Your Airbag Equipped Vehicle 1 77 Additives Fuel 5 7 Add On Electrical Equipment 5 107 Adjustable Throttle and Brake Pedal 2 35 Air Cleaner Filter Engine 5 19 Air Conditioning 3 20 3 23 Airbag Passenger Status Indicator 3 33 Readiness Light 3 32 Airbag System 1 62 Adding Equipment to Your Airbag Equipped Vehicle 1 77 How Does an Airbag Restrain 1 68 Passenger Sensing System 1 70 Servicing Your Airbag Equipped Vehicle 1 76 What Makes an Airbag In ate 1 68 What Will You See After an Airbag In ates 1 69 When Should an Airbag In ate 1 67 Where Are the Airbags 1 65 Antenna Fixed Mast 3 132 Antenna XM Satellite Radio Antenna System 3 132 Antilock Brake System ABS 4 5 Antilock Brake System Warning Light 3 37 Appearance Care Aluminum or Chrome Plated Wheels 5 105 Care of Safety Belts 5 102 Chemical Paint Spotting 5 106 Cleaning Exterior Lamps Lenses 5 103 Fabric Carpet 5 101 Finish Care 5 104 Finish Damage 5 106 Instrument Panel Vinyl and Other Plastic Surfaces 5 102 Interior Cleaning 5 100 Leather 5 102 Sheet Metal Damage 5 106 Tires 5 105 Underbody Maintenance 5 106 Washing Your Vehicle 5 103 Weatherstrips 5 103 Windshield and Wiper Blades 5 104 Appointments Scheduling Service 7 10 
Accessories and Modi cations 5 3 Adding Equipment to Your Airbag Equipped Vehicle 1 70 Additives Fuel 5 7 Add On Electrical Equipment 5 100 Air Cleaner Filter Engine 5 19 Air Conditioning 3 19 Airbag Passenger Status Indicator 3 28 Readiness Light 3 27 Airbag System 1 56 What Will You See After an Airbag In ates 1 64 When Should an Airbag In ate 1 61 Where Are the Airbags 1 59 Airbag Systems Adding Equipment to Your Airbag Equipped Vehicle 1 70 How Does an Airbag Restrain 1 63 Passenger Sensing System 1 65 Servicing Your Airbag Equipped Vehicle 1 70 What Makes an Airbag In ate 1 63 All Wheel Drive 5 42 All Wheel Drive Disabled Light 3 40 All Wheel Drive AWD System 4 8 All Wheel Drive Service Light 3 39 Antilock Brake System ABS 4 5 Antilock Brake System Warning Light 3 32 Appearance Care Aluminum or Chrome Plated Wheels 5 96 Care of Safety Belts 5 93 Chemical Paint Spotting 5 97 Cleaning Exterior Lamps Lenses 5 94 Fabric Carpet 5 90 Finish Care 5 95 Finish Damage 5 97 Instrument Panel Vinyl and Other Plastic Surfaces 5 93 Interior Cleaning 5 89 Leather 5 92 Sheet Metal Damage 5 97 Tires 5 97 Underbody Maintenance 5 97 Vehicle Care Appearance Materials 5 98 Washing Your Vehicle 5 94 Weatherstrips 5 93 Windshield and Wiper Blades 5 95 Appointments 
Accessories and Modi cations 5 3 Adding Equipment to Your Airbag Equipped Vehicle 1 70 Additives Fuel 5 7 Add On Electrical Equipment 5 105 Adjustable Throttle and Brake Pedal 2 33 Air Cleaner Filter Engine 5 19 Air Conditioning 3 20 3 23 Airbag Passenger Status Indicator 3 34 Readiness Light 3 33 Airbag System 1 56 What Will You See After an Airbag In ates 1 63 When Should an Airbag In ate 1 61 Where Are the Airbags 1 59 Airbag Systems Adding Equipment to Your Airbag Equipped Vehicle 1 70 How Does an Airbag Restrain 1 62 Passenger Sensing System 1 64 Servicing Your Airbag Equipped Vehicle 1 69 What Makes an Airbag In ate 1 62 Antenna Fixed Mast 3 114 Antenna XM Satellite Radio Antenna System 3 114 Antilock Brake System ABS 4 4 Antilock Brake System Warning Light 3 38 Appearance Care Aluminum or Chrome Plated Wheels 5 102 Care of Safety Belts 5 99 Chemical Paint Spotting 5 103 Cleaning Exterior Lamps Lenses 5 100 Fabric Carpet 5 98 Finish Care 5 100 Finish Damage 5 103 Instrument Panel Vinyl and Other Plastic Surfaces 5 99 Interior Cleaning 5 96 Leather 5 98 Sheet Metal Damage 5 103 Tires 5 102 Underbody Maintenance 5 103 Vehicle Care Appearance Materials 5 104 Washing Your Vehicle 5 100 Weatherstrips 5 99 Windshield and Wiper Blades 5 101 
