SRS light and Alfa OBD?

[FlyingRAM]

2012 Tradesman 1500, 4.7l 108k miles. The SRS light has recently started to come on intermittently. This happened a few years ago and I could fix it by disconnecting and reconnecting the yellow plug under the passenger seat. I added some good quality dielectric grease on the plug terminals and it's been fine until recently and my old trick doesn't work, tried the drivers side too. I'm looking for an affordable OBD code reader that works with SRS. Does Alfa OBD handle airbag diagnostics? I have a $50 code reader but it won't read SRS codes an none of the models I've searched for specifically state they'll work with SRS. Some posts seem to indicate that's a dealer item... I hope not, my truck hasn't seen a dealer since new.
Anyone have any experience with affordable code readers that will diagnose airbag problems or is Alfa OBD the best option? Thanks

 

[SitKneelBend]

2012 Tradesman 1500, 4.7l 108k miles. The SRS light has recently started to come on intermittently. This happened a few years ago and I could fix it by disconnecting and reconnecting the yellow plug under the passenger seat. I added some good quality dielectric grease on the plug terminals and it's been fine until recently and my old trick doesn't work, tried the drivers side too. I'm looking for an affordable OBD code reader that works with SRS. Does Alfa OBD handle airbag diagnostics? I have a $50 code reader but it won't read SRS codes an none of the models I've searched for specifically state they'll work with SRS. Some posts seem to indicate that's a dealer item... I hope not, my truck hasn't seen a dealer since new.
Anyone have any experience with affordable code readers that will diagnose airbag problems or is Alfa OBD the best option? Thanks

AlfaOBD can connect to the airbag module which I believe is referred to as the ORM (Occupant Restraint Module). This module is informed by the BCM mostly I think so it there are limited to no changes that can be made in the ORM but instead by connecting to the BCM. You can read codes from both though.

 

[Ken226]

2012 Tradesman 1500, 4.7l 108k miles. The SRS light has recently started to come on intermittently. This happened a few years ago and I could fix it by disconnecting and reconnecting the yellow plug under the passenger seat. I added some good quality dielectric grease on the plug terminals and it's been fine until recently and my old trick doesn't work, tried the drivers side too. I'm looking for an affordable OBD code reader that works with SRS. Does Alfa OBD handle airbag diagnostics? I have a $50 code reader but it won't read SRS codes an none of the models I've searched for specifically state they'll work with SRS. Some posts seem to indicate that's a dealer item... I hope not, my truck hasn't seen a dealer since new.
Anyone have any experience with affordable code readers that will diagnose airbag problems or is Alfa OBD the best option? Thanks

A few years ago I had that issue start popping up immediately after the dealership did a ORC reflash recall. It would come on, then go off on it's own, at random times. The dealership "technicians" were unable to reproduce the problem, so couldn't and/or wouldn't do anything about it.

The code was for the passenger seat squib, so one day I sit with the truck idling while I opened up and removed the seat covers, then started wiggling wiring harness sections. I narrowed it down the the final harness section, inside the seat back. I had a clue to the issue, when I noticed that the cable ties that used to hold the wires to the seat frame were broken, as if they had been pulled too hard.

Whenever I wiggled that section, the SRS light would start going on/off.



I pulled the harness sections out and reassembled them on the bench, and with a multimeter I was able to narrow it down to a wire that bad pulled free from the terminal, inside the connector.

I'm not sure what the dealer tech did during that recall, but I suspect they just yanked some wires free from the cable ties, rather than cutting the ties, and pulled the wire out of the terminal. I replaced the harness section and the problem has been resolved for several years.

 

[RamDiver]

2012 Tradesman 1500, 4.7l 108k miles. The SRS light has recently started to come on intermittently. This happened a few years ago and I could fix it by disconnecting and reconnecting the yellow plug under the passenger seat. I added some good quality dielectric grease on the plug terminals and it's been fine until recently and my old trick doesn't work, tried the drivers side too. I'm looking for an affordable OBD code reader that works with SRS. Does Alfa OBD handle airbag diagnostics? I have a $50 code reader but it won't read SRS codes an none of the models I've searched for specifically state they'll work with SRS. Some posts seem to indicate that's a dealer item... I hope not, my truck hasn't seen a dealer since new.
Anyone have any experience with affordable code readers that will diagnose airbag problems or is Alfa OBD the best option? Thanks

For more detailed info on the above circuits, download the 2013-2016 Service manual to a PC, and use 'Control F' to word search for;

Supplemental Restraint System (SRS) 173 hits or
Occupant Restraint Controller (ORC) 1079 hits.

Pdf service manual

Has anyone found a 4th generation service manual in a PDF format? If so can you please share the link? I can't get the McFall one to work on my phone. Thanks!

www.ramforum.com

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[bend1999]

For diagnosing the SRS (airbag) light on your 2012 Ram 1500 Tradesman 4.7L, the Innova 5610 stands out as a top-tier OBD2 scanner. It's specifically designed to handle advanced diagnostics for RAM vehicles, including reading and clearing codes for the SRS, ABS, transmission, and engine systems.