Question about 1995 Pontiac Firebird
The first thing to check is the headlamp door fuses in the underhood electrical center on the left fender. There should be a fuse for each headlamp door. If the fuses are ok the next thing to check is for current reaching the headlamp motors. There should be a two pin connector to each headlamp motor. The wire colors should be DK Blue and LT Blue for the right headlamp motor and DK Green and LT Green for the left headlamp motor. The polarity is reversed to raise and lower the headlamp doors so to check it you would need to ground a test light, disconnect the two pin connector going to the inoperative headlamp motor and check for voltage on either pin when you turn on the headlamps. If you have voltage to one pin you would then need to test the other pin for a good ground. To do that you could connect the ground lead to one pin and touch the other pin in the same connector with the test light probe. If it lights up more than likely the headlamp motor is bad. There is an outside chance that the headlamp door module is not capable of transfering enough amperage to the motor to run it but that is not very likely. If your test light did not light up when you touched each pin while turning on the headlamps then you have a problem with the wiring from the door module or the door module itself.
If you did not get your test light to light up at all at the two pin connector you will then need to disconnect the connector to the head lamp door module and see if you have voltage to both orange wires in the connector. You will have voltage to at least one since one headlamp door is opening. If you have voltage at each orange wire then module is defective. If you have voltage at only one orange wire then you either have something wrong with the wire, the fuse connection, or the fuse itself.
Hope this helps
Posted on Jul 21, 2008
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Posted on Jan 02, 2017
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