Re: found DM, now where is the darn fuse
ryanyahoo said:
My air bag light is flashing a 51 code at me. Xeon helped me find out that this means: Code 51 DM internal fuse: blown and short to ground no longer exists
Do anybody have an idea where the DM internal fuse would be located? I have found the DM but can't find a fuse to save my life.
Thanks for the props Xeon
ryanyahoo,
The DM ("Diagnostic Module") is the main airbag computer. It contains an internal fuse that cannot be fixed or altered. This fuse will be blown open by the DM on purpose if the DM senses that there is a short circuit on one or more of the airbag deployment circuits.
This is a pretty serious fault. Any of the circuits that are potentially shorted can result in an unexpected airbag deployment. The DM, trying to
prevent this from happening, blows the internal fuse on purpose, which removes power from all of the airbag deployment circuits.
If the short sensed by the DM is permanent, the DM will flash code 13. If the short is intermittent (comes and goes), the DM will flash code 51.
I'm afraid this type of repair should be left to a dealership. The source of the fault must be located and fixed and then the DM must be replaced.
HTH