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1994 Dodge Spirit Electrical problem
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bramwell
Novice
Dec 3, 2006, 7:39 PM
Post #1 of 9
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1994 Dodge Spirit Electrical problem
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I recently replaced my ignition switch because it overheated and began to melt the plastic housing on my steering column. Since then, the blower motor and my rear defrost do not work. It seems that there is no power to them. I have replaced the fuse. I know that they were both working just before changing the switch. I had to wiggle the old switch and move the key backwards just a bit, but both the blower and the rear defrost would turn on. Any ideas where to begin to track down the problem?
Thanks
Dave
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steve01832
Veteran
Dec 4, 2006, 4:01 AM
Post #2 of 9
(4734 views)
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Re: 1994 Dodge Spirit Electrical problem
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Check the fuses with a test light to make sure they have power. If they don't we need a wiring diagram to see how they are fed. It may or may not be related to the ignition switch swap-out.
Steve
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bramwell
Novice
Dec 9, 2006, 3:26 PM
Post #3 of 9
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Re: 1994 Dodge Spirit Electrical problem
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Thank you for you reply, Steve. I was just able to finally get around to testing the fuses in my car. There is no power to either side of the fuse for the heater/ac circuit. I tested it with the car on, and the fan switch turned on, but no power.
I have attached the wiring diagrams for the heater and the ignition switch.
thanks
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Attachments:
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heater wiring 1.jpg
(223 KB)
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ignition switch wiring 1.jpg
(225 KB)
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steve01832
Veteran
Dec 17, 2006, 4:10 AM
Post #4 of 9
(4712 views)
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Re: 1994 Dodge Spirit Electrical problem
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Check the black wire with the orange tracer that goes from the ignition switch to cavity 9 of the fuse block. With the key in the on position, there should be 12 volts present. If there is no voltage, unplug the ignition switch and look at the pins inside the wiring connector. Check to make sure the pins are not deformed or pushed back in the connector. If they check out OK the next step is to plug the switch back in and turn the key on and backprobe the black/orange wire with a test light at the ignition switch. If the light glows, repair open wire between ignition switch and fuse block. If the light doesn't glow, try another ignition switch. If the connector is brittle from overheating, replace ignition switch pigtail also. Post back and let me know.
Sorry it took so long. I completely spaced it. Most times I check my e-mail for post replies to see who I need to get back to. If it takes more than a day or two, sending me an e-mail to remind me about the post is the way to go.
Steve
(This post was edited by steve01832 on Dec 17, 2006, 4:26 AM)
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bramwell
Novice
Dec 17, 2006, 10:10 AM
Post #5 of 9
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Re: 1994 Dodge Spirit Electrical problem
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Steve,
I greatly appreciate your help. I hope that my bumping the post was not offensive. I realize that everyone here gives help in the best way and in the best time that they can. I appreciate that you have taken time out of your day to help. Thank you. I will try what you have suggested in the next couple of days and will post what I discover.
Thank you.
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steve01832
Veteran
Dec 18, 2006, 4:07 AM
Post #6 of 9
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Re: 1994 Dodge Spirit Electrical problem
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No offense taken. As I said, you caught me sleeping on the job.LOL
Steve
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bramwell
Novice
Jan 2, 2007, 6:43 PM
Post #7 of 9
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Re: 1994 Dodge Spirit Electrical problem
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Hey Steve,
I did a continuity check on the bk/or wire. I checked from the connector at the switch to the fuse. There was continuity. So, apparently that bit of wire is ok. I am not sure how to check anything else. Do you think this means I should get another new switch? Also, the connector on the wires to the ignition switch has some melting and discoloration at both the bk/or wire and the pink wire. Also, the plastic coating on the bk/white wire has melted back about an inch. Does this give anymore more useful information? I have tried looking at the diagrams, but I have always been bad at reading schematics.
Thanks
Dave
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steve01832
Veteran
Jan 3, 2007, 3:29 AM
Post #8 of 9
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Re: 1994 Dodge Spirit Electrical problem
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Hi Dave, ok, the wire has continuity. An ohmmeter will read continuity as long as one strand of wire is intact. A 12 volt test light is a better tool in this case. The lamp inside the light has a fixed resistance so it loads the circuit. If all of the strands are broken except for one, the test light will glow dim, if at all. This will show us the condition of the wire whereas an ohmmeter will tell us the wire is fine. That's my take on the test light versus the ohmmeter used in a high amperage circuit.
Now, take a test light connected to a good ground and with the key on engine off, backprobe the blk/or wire with the tip. If the light glows, repair the wire between the switch and fuse box. If the light doesn't glow, replace the ignition switch. From what you said about the connector you should replace that as well.
When you replace the pigtail, don't use crimp connectors. The wires should be soldered and shrink-wrapped. It is a much better connection than using butt connectors. Start there and keep us posted.
Steve
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bramwell
Novice
Jan 3, 2007, 8:32 AM
Post #9 of 9
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Re: 1994 Dodge Spirit Electrical problem
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Ok thanks, Steve.
I went back out and used a test lamp on the bk/or wire. I put the key to on/engine off and tested the wire. The light did not glow at all. I found power at a few other places, such as the blk/white wire, but nothing at the blk/or wire. So, I will get a new ignition switch and replace the pigtail also.
Thanks again for all your help.
Dave
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