Test D: No Communication With Driver Door Module
WARNING: This page is about a different car, the 1997 Lincoln Continental. However, it is still accessible from the selected car via links, so may be relevant.
- Check Power Supply - Disconnect driver door module connector C524. Using a voltmeter, check voltage at Light Green/Purple wire of driver door module harness connector C524. If battery voltage does not exist, go to next step. If battery voltage exists, go to step 4).
- Check Light Green/Purple Wire - Remove fuse No. 39 from in-car fuse panel. Check resistance in Light Green/Purple wire between driver door module harness connector C524 and ground. If resistance is greater than 10,000 ohms, go to next step. If resistance is 10,000 ohms or less, repair short in Light Green/Purple wire and replace fuse.
- Check Power Supply To Fuse - Using a voltmeter, check voltage at input side of fuse No. 39. If battery voltage exists, repair open in Light Green/Purple wire. If battery voltage does not exist, repair open in Red wire between power distribution box and in-car fuse panel.
- Check Grounds - Check resistance in Black wire between driver door module harness connector C524 and ground. If resistance is greater than 5 ohms, repair open in Black wire. If resistance is 5 ohms or less, test module communications. See MODULE COMMUNICATIONS NETWORK article.