REPAIR NOTES 1. A possible problem that could be experienced in this circuit is a "feed back" situation caused by a defective diode. The diodes can be checked using an ohmmeter; they should show continuity in one direction only. If a reading is obtained in both directions, the diode is shorted and will allow "feed back" to occur. If a reading cannot be obtained in either direction the diode is open. If a door switch diode is open, that particular door switch will not operate the "door ajar" lamp or the interior lamps. NOTE: Feed back through one of the door lamp switch shorted diodes will allow both sets of door lamps to illuminate when one door is opened. Feed back through the door ajar diode or interior lamp diode will cause the door ajar lamp to illuminate slightly with the doors fully closed. 2. The interior lamp diode is located in the main wiring harness and is positioned at the left front corner of the center console. The diode is color coded blue. 3. The door ajar diode is located in the wiring harness behind the instrument cluster directly above the steering column. It is color coded black. 4. The door switch diodes are located in the main wiring harness and are positioned at the left front corner of the center console. The left door diode is color coded red. The right door diode is color coded black. 5. The interior lamp delay unit is located in the relay compartment behind the passengers seat. (See "Chassis Electrical" section)
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