Blinking interior lights, clicking sounds and trouble starting?

Tiny
MICHELEH
  • MEMBER
  • 2005 CHRYSLER PACIFICA
  • 3.5L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 197,000 MILES
Hi,

Let me begin with, I'm not a mechanic, but I can follow directions. One day the car was fine, and the next, it wouldn't start. I thought it was the starter, I hit it a couple of times and it wouldn't start, but then I used an impact wrench and a trailer jack to jack the car up and I thought it vibrated something, because then it started. I attempted to drive it to the store and the dashboard lights (not sure if the other interior lights joined in on the fun) began to go out and come back on. I replaced the battery and it tested at 12.5sh volts. With the car running I checked the battery, and it came back at 14.2. I changed the battery posts, and
I removed the fuse box to make sure there were no loose connections. I checked the engine ground, it was 0, and the chassis ground was 0.01.
The blinking and clicking noise appears to happen whenever an electrical event occurs (e.G. Opening a door, turning the car off, etc.)
I noticed an inline Maxi fuse (one side had some type of glue? In it, maybe to keep anyone from using it, but why leave it hooked to the positive battery terminal? However, since I don't know if the other side is an exposed dangling wire, I don't want to just stick a fuse in it.
Any ideas on what the problem may be, and how to fix it?
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Saturday, July 15th, 2023 AT 8:35 AM

8 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,235 POSTS
Yep, the integrated power module goes out all the time in these vehicles, to be sure we should do a CAN scan which is easy. You can get a CAN scanner (Controller Area Network) which will work on most cars from Amazon.

here is a video to show you how:

https://youtu.be/u-4syLc-ifQ

and

https://www.2carpros.com/articles/can-scan-controller-area-network-easy

Here is one for about $99.00 if you need it:

https://amzn.to/3ZixY4v

Here is the location of the IPM and how to change it out in case you need it. Check out the images (below). Please let us know how it goes.
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Saturday, July 15th, 2023 AT 5:57 PM
Tiny
MICHELEH
  • MEMBER
  • 5 POSTS
Hi Ken,

Thank you for your response. Question, I tested the fuses (but not relays) within the IPM, and they had power. Is this possible when the IPM goes on the fritz? Also, I forgot to mention, that I plugged a tested code scanner into the diagnostic wire connector three times and it was unable to connect, and I know it was working last month when I had the car inspected.
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Sunday, July 16th, 2023 AT 8:30 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,235 POSTS
Can you try the scanner on another car to make sure it works? Did you get any codes while doing the CAN scan?
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Monday, July 17th, 2023 AT 9:52 AM
Tiny
MICHELEH
  • MEMBER
  • 5 POSTS
I tested the code scanner on two additional cars after the three failed attempts on my car. It was able to connect to both cars and return results. I haven't ordered the CAN scanner yet. I followed the link you sent and as suggested by the seller, I am waiting for them to confirm whether it will work on my car. I sent the VIN, year, make, model, etc, and their response was "what functions are you trying to perform?".
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Monday, July 17th, 2023 AT 10:20 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,235 POSTS
Tell them you are trying to scan through the IPM to see if there are any errors. Kind of strange all you need is a yes or no that it will do a complete CAN scan.
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Tuesday, July 18th, 2023 AT 9:19 AM
Tiny
MICHELEH
  • MEMBER
  • 5 POSTS
Hi Ken,

Okay, they took too long to respond so I purchased the Ancel AD310. I plugged it up, turned the key to the ON position, and it did connect. When I chose "Diagnostics" it read/counted the PIDs and OBD was present. However, it did not return any codes. What should I be looking for?
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Thursday, July 20th, 2023 AT 7:31 AM
Tiny
MICHELEH
  • MEMBER
  • 5 POSTS
Hi Ken,
I decided to pull the wires underneath the dash to check for connection issues. BTW, I found a few. The car had two 30 AMP inline fuses leading under the hood. I removed both fuses and it stopped and the car started each time I turned the key. One of the fuses removes the Tailgate open message, and the other I have no clue. I am going to go to one of the pull your own part salvage yards to see what that area should look like and clean that area up; it's a mess. Thank you for all your help. Michele
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Thursday, July 20th, 2023 AT 10:03 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,235 POSTS
Sounds good, please let me know how it goes.
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Saturday, July 22nd, 2023 AT 8:41 AM

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