2003 Dodge Cummins Engine Wiring Harness Diagram

Hello everyone,

First off, I am new to the forum and this is my first post. These forums are full of great information and I hope to be able to contribute! Below is my issue:

I recently purchased a 2003 Dodge Ram 1500 SLT with the 5.7L Hemi. The truck has high miles but is in pretty decent shape considering its age. When I looked at it, the check engine light was on (which later turned out to be emissions codes - something I'll get into later) but my cheap scanner that I brought with me couldn't read them at the time.

Anyway, I drove it home (about an hour and a half drive) without any issues and I drove it around for about 2 weeks as well - I didn't drive it much but when I did, I didn't have any issues. One day I got in and started the truck and the airbag light came on and stayed on after the self check - so now I've been chasing the problem and I hope y'all can help me.

I ended up buying a scanner - the Ancel FX4000 - from Amazon: https://www.amazon.com/ANCEL-Automo...1&keywords=ancel+fx4000&qid=1627484114&sr=8-5

The scanner works OK on my truck and when I scanned the SRS system, I received 2 errors:

2 - Driver squib #1 circuit open
9 - Driver squib #1 short to ground

No, I didn't get any sort of letter and 4 digit code, just what you see above. Here's what I did so far:

1. - I replaced the clock spring with a used OEM clock spring off eBay. After replacing that, the codes returned the next time I turned the key to run even after clearing them.
2. - I did an OHM test on the airbag module itself. The test returned a reading of 2.1 OHMS which (from what I've read) should indicate the airbag is good. I did check and it was replaced in the recall.
3. - Made sure all the plugs to the SRS module under the cup holder were secure. I even unplugged them and plugged them back in.
4. - Tested my old clock spring (the one I bought from eBay is still in the truck right now) and the old clock spring tested good even when simulating turning.
5. - Replaced the wiring harness between the clock spring and airbag as one came with the clock spring I bought on eBay.
6. - Checked wiring under the seats (no airbags there but I made sure everything was plugged in just in case it was something with the seat belt lock).
7. - Checked the 2 fuses under the hood. Both are good.

I'm feel like I'm chasing gremlins - and I was hoping that someone could tell me how to do a continuity test on the wires from the clock spring to the SRS module under the cup holders? I'd also like to take the SRS module out from under the cup holders but I haven't had success removing the cup holders in order to get access to the module.

Does anyone know if there's something I'm overlooking? I don't want to keep replacing unnecessary parts if I don't need to.

Thanks in advance for any help and advice.

Last edited: Jul 28, 2021

Posted by: rodgerdepontee06909.blogspot.com

Source: https://www.ramforum.com/threads/2003-ram-1500-airbag-light.179675/