Taillights, front running lights are not working

Tiny
JFRED
  • MEMBER
  • 2007 CHRYSLER TOWN AND COUNTRY
  • 3.3L
  • V6
  • FWD
  • AUTOMATIC
  • 67,000 MILES
All the other lights works; directional's, brake, and 4 ways.
Using a 12 volt tester, it indicated there was no power to either 15 amp fuses for the lights.
I took 2 14 gage wires, put the 2 ends of one side and put them together, touched this end to the positive side of the battery, and the 2 ends of the other side of
the wires, I touched one to one side of the fuse and the other end to the other side of the fuse. The lights worked.
Other than this I'm at a loss.
Hope you can help as no one else I've spoken to about this has been to no avail. I'm skeptical about taking it to a dealer. If I knew what the problem was I know I could do the repairs
Hope you have a solution.
Thank you,
Rusty
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Sunday, January 25th, 2015 AT 8:51 AM

16 Replies

Tiny
CADIEMAN
  • MEMBER
First turn the headlight switch to parking light position. Then use the test light on both sides of the parking light fuse. Does it have power?
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Sunday, January 25th, 2015 AT 9:20 AM
Tiny
JDL
  • EXPERT
Hey everybody, not trying to butt in, I was looking up wiring info. Have a good day.
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Sunday, January 25th, 2015 AT 10:04 AM
Tiny
JFRED
  • MEMBER
No power. Both 15 amp fuses are good. Both were tested.
It almost acts like a ground wire, but where?
Any ideas what's wrong?

What are those square black fuses in the fuse box and what is that thin silver
box on the front of the main fuse box?
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Sunday, January 25th, 2015 AT 10:22 AM
Tiny
JDL
  • EXPERT
Did you click on the diagram? The park lamp relay has to be energized before the fuses get voltage.
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Sunday, January 25th, 2015 AT 10:31 AM
Tiny
JFRED
  • MEMBER
Clicked on the diagram. Sorry, no picture.
"The park lamp relay has to be energized before the fuses get voltage."
I've located the park lamp relay on the fuse box cover. How do you energize it?
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Sunday, January 25th, 2015 AT 11:17 AM
Tiny
JDL
  • EXPERT
I just clicked on the diagram, it works for me? The headlamp switch/tail lamps feed to the BCM, the BCM sends BUS message to front control module, telling the front control module to ground the coil side of park lamp relay. The problem could be anywhere along those circuits.

I don't know if there would be applicable codes, if so, some of the national brand auto stores will check codes for free.
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Sunday, January 25th, 2015 AT 12:01 PM
Tiny
JFRED
  • MEMBER
Hi Cadieman,
Have you figured out what the problem is with the lights? JDL is having
a tough time with this one.
Rusty
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Sunday, January 25th, 2015 AT 1:25 PM
Tiny
CADIEMAN
  • MEMBER
The front control module sends power to those fuses.
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Sunday, January 25th, 2015 AT 3:20 PM
Tiny
JFRED
  • MEMBER
JD,
I had to right click on the diagram to open it up. Thanks.
I'll have to do some studying on this one. I'll go to the local auto parts
store to see if they can check this out,
One other thing I did was take those modules(?)In the fuse panel and switch them around
to see if that made a difference. Since they all have the same part(#) on
them. Didn't make any difference.
I did put them back in their original places.
Very good. Is the module the silver panel attached to the front of the fuse panel box?
I looked at the diagram that JD sent. Can you open this too? I had to right click on his to open it up.
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Sunday, January 25th, 2015 AT 3:38 PM
Tiny
CADIEMAN
  • MEMBER
You will need to replace the module because it grounds the relay.
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Monday, January 26th, 2015 AT 6:46 AM
Tiny
JFRED
  • MEMBER
Cadieman,
What is the actual name of the module in question? Is it the TCIM?
BCM? I've got to be able to tell the auto parts store clerk what I need.
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Monday, January 26th, 2015 AT 3:59 PM
Tiny
CADIEMAN
  • MEMBER
TCIM, you can remove the old one and take it in the parts store. Because there may be a core charge on it because they rebuild them. That way you won't have to deal with that.
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Monday, January 26th, 2015 AT 5:13 PM
Tiny
JFRED
  • MEMBER
Very good Cadieman,
Will do.
Thank you
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Tuesday, January 27th, 2015 AT 4:15 AM
Tiny
CADIEMAN
  • MEMBER
You are welcome.
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Tuesday, January 27th, 2015 AT 5:58 AM
Tiny
JFRED
  • MEMBER
Hi Cadieman,

Went to the auto parts store to get the part. When I told the counter person
what I wanted, I was told that that unit would have to be programmed by
somebody who had the software. And that meant going to the dealership or somewhere that had the software. I was also told by the counter person
that the fuse that cuts off the computer can be pulled out, wait a few seconds, plug it back in and the lights would work. I did so and the lights now work.
So, that's that. I hope this technique is permanent or I'll be under the hood pulling that fuse every so often. And I got an estimate, sort of that this whole operation changing out that module, programming it and labor
could run as high as $700.00.
I'll keep pulling the fuse for that or put in a bypass switch until I can get
back to MT this spring.
Thanks again. I appreciate all your help.
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Thursday, January 29th, 2015 AT 4:02 PM
Tiny
KASEKENNY1
  • EXPERT
The issue with these lamps is the integrated power module is going to an open circuit. This was a common issue on these modules. Unfortunately there is not a solution other then replacing the module. Some people have done a battery disconnect and were able to get the module to reset but it is only a matter of time before it will do it again. Fuse 26 is a 20A fuse and is the direct power feed for this module. If this is removed it may be a temporary solution but as I said the only permanent solution is to replace the module.

Please let me know if you have questions. Thanks
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Monday, March 30th, 2020 AT 7:18 PM

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