Has to be a short in the wiring. The list of circuits affected by the IOD usually consist of the following:
Cargo Lamp, CHMSL, Diagnostic Connector, Dome Lamp, Glove Box Lamp, Map Lamps, Power Mirrors, Radio, Under Hood Lamp
You may have to disconnect every one of these devices except including the OBD port to inspect their wiring.
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Sunday, February 15th, 2009 AT 6:28 PM