Mechanics

CHRYSLER CONCORDE CLUTCH PROBLEM

1998 Chrysler Concorde • 226,000 miles

Electrical problem fuse block under the dashboard fuse # 21 seems to be feeding back into other electrical components causing engine not to shut off when ignition key is turned off and some instrument cluster lights to come on. When you remove fuse 21 engine shuts off and cluster lights go off immediately.

What can cause this problem in the electrical system?
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Bertrubsamen7
March 1, 2013.



Need a test light or meter with #21 fuse pulled check voltage on both side of fuse should only be hot on one side if both hot go to Power Distribution and pull AC relay see if voltage drops if not pull fan relay let me know

Docfixit
Mar 1, 2013.
Docfixit,
I thank you greatly for reply.

Next time this happens I will check fuse number 21 to see if it is hot on both sides.

When dashboard lights come on after ignition key is turned off, problem does not occur constantly, but seems occurs only after the vehicle is hot and has been running for a while. Dashboard indicator lights would be your bag, oral pressure, etc.

Engines sometimes continues to run and sometimes does not continue to run. It's sporadic occurrence.

I have to tell you that the AC clutch relay in the Power Distribution module had to be jury rigged some time ago giving the relay a direct hot wire from the front where the battery connection is connected to the power distribution module.

This was done by a mechanic because the inside climate control could not turn on the clutch. Apparently there is a failure inside the Power Distribution.

He advised me this was common. It's been operating for many years without problems. It's possible that other problems within the power distribution center have been created due to corrosion possibly.

Next time the car does not shut off, I will pull the AC clutch relay and see if that has any effect.

According to wiring diagram for fuse #21 it does connect to AC compressor clutch, Radiator fan high low relay, there are 2 radiator fan high low relays for high speed and low speed 21 is also connected to Leak Detection pump.

Currently I am getting a failure notice on OBD2 indicating fault 1495 which is solenoid fault.

I was thinking that possibly voltage could be feeding back from the leak detection pump solenoid? I was going to have that fixed and see what happens.

Currently I am focusing in on the Powertrain Control module "power distribution module" as it apparently has a history of causing problems.

But I think I need to first check what the problem is or is not with leak detector pump solenoid fault to make sure it's not feeding back into the system, if that is possible?

I'll report back to you once I have had a chance to re-diagnose as you described.

If you always answer me by e-mail that would help BertRobinson7@MSN. Com otherwise it's hard to tell if there's a response or not.
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Tiny
Bertrubsamen7
Mar 2, 2013.
Docfixit,
I thank you greatly for your Suggestion regarding AC relay may possibly be the cause creating a feedback.

The problem of engine running and indicator light such as: Airbag, oil, and other indicator lamps coming on is independent from engine after the ignition key has been turned off.

Early I tried to see if the lights on the instrument cluster would come on again after running the engine to operating temperature and sure enough once I took the ignition key out cluster lights came on.

I pulled out the A/C clutch relay and lights went off.

Put back the AC relay and lights came back on again.

I checked fuse #21 but only one side of the fuse had current the other side was negative.

But when I pull the fuse the dashboard lights and engine will cut off.

Again I checked it at the time that only the dashboard lights were coming on engine was shutting off normally.

I'll have to wait till some time that the engine won't shut off and then checked fuse 21 to see if there's any feedback from the other side.

I also disconnected the direct voltage into the AC relay. As I mentioned it has been bypassed because there was no voltage going into relay from the Power Control module. Disconnecting the direct feed into the AC relay made no difference.

Pulling the relay the lights on the dashboard would go off.

The only other thing I thought could be possible cause a problem is that the AC compressor clutch burned out on me a few months ago. This is the second time this happened in five years. Clutch simply froze up probably due to air conditioner not getting proper lubricant or whatever.

I unplugged the connected to the AC compressor.

Do not know if this will make a difference, but possibly the clutch could have caused a short? But I don't think so.

Thank you for suggesting regarding AC compressor relay in Power Distribution center. B did not think it had any effect on the problem. But it does.

Any Other Suggestions will Be Most Greatly Appreciated, this problem is driving me crazy.

I'll also have to see if the problem I have with fault code 1495 coming on the evaporation system pump solenoid if that could be causing a feedback?

Once again any suggestions you can provide I will be most grateful for.

Tiny
Bertrubsamen7
Mar 2, 2013.
Yes disconnect the "jerry rig wire" not the way to rerpair and likely cause damage to PCM and Body Control Module suspect BCM is cause of weird light problem

Docfixit
Mar 4, 2013.
Hi Docfixit,

I sincerely thank you for all your help especially recommending to pole AC clutch relay, this made a big difference and was something I had no idea was involved in the circuit that was causing the problem.

As the AC compressor seized-up some time ago and it is winter now no here to fix it. There is no belt currently attached AC compressor and I disconnected the connection to the clutch.

After disconnecting the AC clutch I had no more problems with indicator lights coming on on dashboard or engine running after key has been turned off.

Don't know why this should make a difference, but for some reason it did make a difference.

Certainly when I pulled the AC clutch relay the indicator lights would go off.

Put the AC clutch relay back-in indicator lights would come on.

Jury rigging the AC clutch relay is not the problem. It was jury rigged this way by a mechanic maybe five years ago because climate control system was functioning, but relay in PCM was not giving power to the relay.

Disconnecting the jumper wire makes no difference.

If the jumper wire is not there there is no current from the Power Control Module going into the relay as there is something wrong internally with the power control module.

It may be possible that the AC clutch terminals somehow were causing a feedback?

Disconnecting the wires to the clutch seems to have relieved the problem I been experiencing.

Sounds like a wild one but it's working so far.

Bert

Tiny
Bertrubsamen7
Mar 5, 2013.
Good maybe thr Grimlins have had their fun

Docfixit
Mar 5, 2013.
Another problem that also developed is that the multifunction switch on the steering wheel highbeam headlights will only come on if I hold the lever up.

It used to be one click high beams on

One click high beams off

For some reason the on feature does not seem to be functioning.

Could this be due to one of the relays that operate the highbeam low beam?

Do you have any advice?

Bert

Tiny
Bertrubsamen7
Mar 5, 2013.
Suspect high beam select switch at bottom of column

Docfixit
Mar 5, 2013.
Thank you for your reply.

I am hoping it's not the multifunction switch on the steering column.

I was hoping it might be one of the relays on the junction box.

Checking the wiring diagram the low beam relay may act as an on-off relay for the highbeam relay when the multifunction switch is pressed a second time to turn high beams off.

The multifunction switch is clicking normally, no indication of malfunction.

Any opinion?

Bert

Tiny
Bertrubsamen7
Mar 5, 2013.
If select clicks then maybe high beam relay

Docfixit
Mar 5, 2013.
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