2001 Ford Taurus MIL goes off as dash dimmer switch increas

2001 FORD TAURUS
100,500 MILES • 6 CYL • FWD • AUTOMATIC
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EACH
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The MIL went on. I put the reader on it and there were no codes. I then turned headlights on and the MIL went out. I then tried the dashboard light dimmer and found when it was turned down all the way, the MIL was bright. As I increased the dimmer, the dashboard lights got brighter, the MIL got dimmer until I increased the dashboard lights all the way and the MIL went out. What gives?
Feb 5, 2009 at 6:16 PM
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MASTERTECHTIM
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i would suspect a problem in the circuit board in the dash cluster. although i have never seen this before, it seems as the check engine light is backfeeding through the running light circuit.
Feb 8, 2009 at 7:27 AM