Sorry new at this. Have a 2004 SRT 10 with 23000 miles. Battery 3 yrs old appx. Intermittently warning lights appear for ABS,airbag,parking brake. A/C compressor shuts down as does speedometer and turn signals. Reverse lockout on trans does not function. Viper tech has replaced body control module,A/c control head and reverse lock out switch. Still have problem.
HELP electrical problem
- Thread starter joe stehr
- Start date
EZ 2B Green
Enthusiast
This could possibly be a loose ground connection. Check the main grounds on the chassis, engine etc.. before replacing any more parts. Good luck!
kblake905
Viper Owner
Make sure your battery terminals are clean and making good contact.
Have Battery checked out / load test. Try to isolate when problem occurs, I.E. when cranking/starting, under acceleration, steady speed,when first occured, Don't overlook the simple things thinking it's something major. Good Luck. 
Sounds like your PCI Bus wire is grounding out... that would be my first guess.
Thanks, What is PCI bus and where is it?
PCI Bus is the communication wire for the ECU, BCM, Radio, A/C system, Tire Pressure Computer, Dash, etc. It is a single wire that connects them all together. The bad news is that this wire runs all over the car. I would start by letting the car run, and jiggling all the wiring harnesses around that you can locate, and see if you can duplicate the issue. That is, of course, if there isnt apparent wiring damage somewhere.
EZ 2B Green
Enthusiast
Dan's suggestion is a good one. I had an intermittent short on the CAN bus on my last Chevy. Lots of weird failures would occur at the same time when it happened. The clue that solved it was that it seemed to occur most often when applying the brakes. It turned out to be the brake pedal arm had worn through the insulation on one of the under dash wiring harnesses.
