It has airbag warning light turns on and passenger air bag light goes off, after few seconds of ignition/engine on. I hooked up the scanner and it gives B2290 code stating occupant classification system fault, I tried erasing the code, but unable to do it, as it comes right back on. I unplugged the wiring to OCM (or occupant detection/ weight) sensor part#14B422 underneath the passenger seat, and then ofcourse U1900 came which says SRS module fault, but then I was able to erase the B2290 code, and not U1900. I also took it to a body shop as they have high end diagnostic tools, and they said re-calibrating the OCM sensor should fix the issue, they tried to re-calibrate it two times was successfully completed but the code did not go away. So they are suspecting that OCM sensor could be bad itself, and need to be replaced. Of course they did not allow me to watch the process they are doing, so I do not have full details on what all they did.
I inquired with dealership over phone about it, and as per them following spec, it needs to replace all four sensors underneath the seat including rail sensors, and all and all. I cannot even locate those four sensors they talked about at Fordparts. Com with my car details. I also could not locate those many plugs and sensors underneath the passenger seat in my car. So I am not sure how much to trust that information.
It is an expensive part $180.00, I do not want to just replace it, if it is really not required, and thus may not fix the problem. Looking for second opinion or suggestion to how to really identify the problem part. And if there is a way to test if the sensor is really bad, by jumping/shorting the wires, resistance test etc, etc.
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Wednesday, October 18th, 2017 AT 11:52 AM
