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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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Haynes Manuals Select a category Title Make Model Covers Holden Commodore 97 00 Holden Holden Commodore 97 00 Series VT and VT Series II with V6 and V8 engines PLEASE NOTE that these manuals are intended for petrol engine cars except where diesel is specifically mentioned built to Australian specifications Whilst many of them are useful for the same make and model of car built for other markets such vehicles may have different features especially in areas concerned with safety and emission control Please also note that these manuals have a soft paperback cover ISBN 1 56392 425 0 Book No 41743 Price 14 99 In Stock YES Home Page News Items New Titles Ordering Info Stockist Locator Frequently Asked Questions Help Features 2003 Catalogue Contact Us Terms Conditions View Shopping Basket Book Search Manual Search Investor About Haynes Agricultural American Cars Culture Aviation Car Manuals Caravans Camping Chilton Manuals Commercial Vehicles Computing Cycling General Home DIY Maritime Max Power Military Motor 