All warning lights problems - help
Thread Starter
Instructor
Joined: Jul 2010
Posts: 152
Likes: 0
From: River City USA, East of the Mississippi Peoples Republic of Illinois
All warning lights problems - help
Returning from a club drive out my 2000 C5 went crazy on my dash. Check engine light, check guages light, seat belt light, fuel guage went to empty, temp guage went to zero. windows would not work.
Went to O'Reilly's for a check engine light readout this morning.
It showed;
U1301, class 2 bus shorted to battery.
U1301 Communication shorted to battery
Rt Frt wheel speed sencer variation
U1016 loss of communication modul.
I stopped the engine and all went away. After about 10 minutes it came back again. This went on for about 30 miles, on and off again. I even rest the computer with the key fob to no avail About 45 miles away from home it went away and didn't come back.
What should I be looking for to correct this problem? Had fuel guage problem in May, dumped a can of Tech-Ron in the tank for it's annual C5 Cocktail. Was Kosher until Sunday's drive out. Any thoughts on this?
Went to O'Reilly's for a check engine light readout this morning.
It showed;
U1301, class 2 bus shorted to battery.
U1301 Communication shorted to battery
Rt Frt wheel speed sencer variation
U1016 loss of communication modul.
I stopped the engine and all went away. After about 10 minutes it came back again. This went on for about 30 miles, on and off again. I even rest the computer with the key fob to no avail About 45 miles away from home it went away and didn't come back.
What should I be looking for to correct this problem? Had fuel guage problem in May, dumped a can of Tech-Ron in the tank for it's annual C5 Cocktail. Was Kosher until Sunday's drive out. Any thoughts on this?
Melting Slicks
Joined: Jul 2004
Posts: 3,294
Likes: 480
From: Brea CA
I would look at the wiring harness that goes through the doors. Also check the wiring at the driver seat.
Search out the threads posted by Bill Curee on electrical issues. He has a laundry list of procedures on how to narrow down where the issue is.
More than likely there is a frayed pair of wires that is causing the issue.
Gary
Search out the threads posted by Bill Curee on electrical issues. He has a laundry list of procedures on how to narrow down where the issue is.
More than likely there is a frayed pair of wires that is causing the issue.
Gary
Melting Slicks
Joined: Sep 2011
Posts: 2,258
Likes: 543
From: Appleton WI
There is a good chance the problem is easy to fix. Bill Curlee did a writeup on how to fix. There is a electrical connection in the chassis near the accordions in the door that can become loose or corroded. Remove the accordion near the chassis and fish the wire and connector out. Open the connector to clean and ensure the male pins fit tightly into the female ends. It will likely be the driver's side but do both sides. It doesn't take long. (Maybe 30 minutes total)
When it happened to me, I was able to confirm it was the conection by pulling over, opening the door, and wiggling the accordion. The craziness went away for a little while.
DEFINITELY look at those connectors before digging any deeper.
When it happened to me, I was able to confirm it was the conection by pulling over, opening the door, and wiggling the accordion. The craziness went away for a little while.
DEFINITELY look at those connectors before digging any deeper.
Thread Starter
Instructor
Joined: Jul 2010
Posts: 152
Likes: 0
From: River City USA, East of the Mississippi Peoples Republic of Illinois
warning light crazieness.
There is a good chance the problem is easy to fix. Bill Curlee did a writeup on how to fix. There is a electrical connection in the chassis near the accordions in the door that can become loose or corroded. Remove the accordion near the chassis and fish the wire and connector out. Open the connector to clean and ensure the male pins fit tightly into the female ends. It will likely be the driver's side but do both sides. It doesn't take long. (Maybe 30 minutes total)
When it happened to me, I was able to confirm it was the conection by pulling over, opening the door, and wiggling the accordion. The craziness went away for a little while.
DEFINITELY look at those connectors before digging any deeper.
When it happened to me, I was able to confirm it was the conection by pulling over, opening the door, and wiggling the accordion. The craziness went away for a little while.
DEFINITELY look at those connectors before digging any deeper.
Advanced
Joined: Feb 2014
Posts: 90
Likes: 4
From: Hollister CA
Returning from a club drive out my 2000 C5 went crazy on my dash. Check engine light, check guages light, seat belt light, fuel guage went to empty, temp guage went to zero. windows would not work.
Went to O'Reilly's for a check engine light readout this morning.
It showed;
U1301, class 2 bus shorted to battery.
U1301 Communication shorted to battery
Rt Frt wheel speed sencer variation
U1016 loss of communication modul.
I stopped the engine and all went away. After about 10 minutes it came back again. This went on for about 30 miles, on and off again. I even rest the computer with the key fob to no avail About 45 miles away from home it went away and didn't come back.
What should I be looking for to correct this problem? Had fuel guage problem in May, dumped a can of Tech-Ron in the tank for it's annual C5 Cocktail. Was Kosher until Sunday's drive out. Any thoughts on this?
Went to O'Reilly's for a check engine light readout this morning.
It showed;
U1301, class 2 bus shorted to battery.
U1301 Communication shorted to battery
Rt Frt wheel speed sencer variation
U1016 loss of communication modul.
I stopped the engine and all went away. After about 10 minutes it came back again. This went on for about 30 miles, on and off again. I even rest the computer with the key fob to no avail About 45 miles away from home it went away and didn't come back.
What should I be looking for to correct this problem? Had fuel guage problem in May, dumped a can of Tech-Ron in the tank for it's annual C5 Cocktail. Was Kosher until Sunday's drive out. Any thoughts on this?
You might also check the two ground connectors on the frame rails up front by the radiator. Make sure they are clean and tight.
