2004 Sebring pcm issue - Page 2 - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
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post #16 of 22 (permalink) Old 04-03-2013, 10:05 AM
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Originally Posted by MattStrike View Post
When I checked with the test light the common was ground (which I thought was backwards, but )

PCM has three plugs I believe.
If it has more than two then it will have four. Sounds like you have NGC, (Late build). I'll do some checking and see if I can get some extra detail.
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post #17 of 22 (permalink) Old 04-04-2013, 03:02 AM
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how are you checking?
the asd relay would need to be jumpered as it provides the power to the cicuit if i'm not mistaken. didn't get a chance to look at diagrams today.
or you can check one plug at a time when running. there should be a steady power, and, depending on your test equipment, a pulse ground.
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post #18 of 22 (permalink) Old 04-04-2013, 12:07 PM Thread Starter
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I used a 194 light bulb to check... probed the common with the other side of the bulb connected to ground, no light. probed the common to +12v, it lights.

I could go back and recheck with the DMM and test light to my hearts content if it's common +12v or common ground. But unless this asd relay grounds the injector common circuit when the key is off then I'm certain that the ground is common.

But, even if that is the case, then I still have to conclude that there isn't a problem with the common circuit because the test light lit up.
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post #19 of 22 (permalink) Old 04-04-2013, 12:51 PM
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Found the other side of this diagram, finally.

So if you are getting a good 12 volts + at the one side of the injector wire, then that common 12 is apparently good along with the ASD and the fuses to it.

I would check the other side of the plug on injector #2 for continuity. That's the tan wire. See if it will light the bulb, (Unplugged from the PCM and injector). Also, check it for being shorted to the other wire.

Last edited by Adpros; 04-04-2013 at 12:58 PM.
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post #20 of 22 (permalink) Old 04-04-2013, 04:15 PM
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"other side of the plug on injector #2" - you mean check the harness for continuity at the injector to make sure the injector is getting 12v? Or do you mean to run the car with like a homeade noid light to see if the injector is getting signal?
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post #21 of 22 (permalink) Old 04-04-2013, 08:55 PM
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"other side of the plug on injector #2" - you mean check the harness for continuity at the injector to make sure the injector is getting 12v? Or do you mean to run the car with like a homeade noid light to see if the injector is getting signal?
Poor choice of words at the time. I meant if the 12V+ common is checking good, (ASD has to be jumped as was posted by Hrmwrm), then check the other wire, (The tan one), for continuity. Should test good from the injector plug to the PCM plug.

A noid light is great though many people are unfamiliar with this device.
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post #22 of 22 (permalink) Old 04-04-2013, 10:14 PM
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power is the dark green/light green. it powers the coils and injectors. common power through fuse 14.
jump the asd relay. then check direct to ground with meter,test light, whatever.
then you'll have to test continuity, as adpros said, between the computer plug and the plug at the suspected injector. (went back to post 1. done already i guess)
ground could come back through the heated O2 sensors on the power side, as they are on the same circuit. so, if you didn't jump the asd relay,you wouldn't have +12v.
so, yes, probably bad pcm driver.
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