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View Full Version : Multiple Codes including Airbag

CrimsonEclipse
11-23-2021, 06:12 PM
As follows

U0100 EMPS
C1201 ABS/VSC/TRAC
C1241 ABS/VSC/TRAC
B1771 Occupation Detection
B1801 SRS Airbag
B1811 SRS Airbag

It is also accompanied by an airbag light

This all occurred after some front end maintenance which included lowering the crossmember and disconnecting the steering assembly.

It seems to think that there is a short to the airbag squib.

So somehow I've manage to disconnect or fry an ECM module.

Where should I look first?

I tried resetting the system by disconnecting the battery and by using an ODB2 tool and neither worked.

Is this an expensive repair?
I don't think it will pass inspection with the airbag light on.
stidnam
11-24-2021, 06:00 AM
Bit of a strange combination of codes. The only computer up front in the bay besides the ecm is the abs module. Did that get unplugged? What else got unplugged during this maintenance? There's nothing attached to the cross member or steering rack that should cause that.

Do you have access to techstream?
stidnam
11-24-2021, 06:03 AM
Actually, any chance the steering wheel got rotated when disconnected, resulting in damage to the clock spring? That would certainly account for the drivers airbag code.
CrimsonEclipse
11-24-2021, 04:08 PM
Bit of a strange combination of codes. The only computer up front in the bay besides the ecm is the abs module. Did that get unplugged? What else got unplugged during this maintenance? There's nothing attached to the cross member or steering rack that should cause that.

Do you have access to techstream?

I didn't unplug anything.
I do have access to techstream.

Actually, any chance the steering wheel got rotated when disconnected, resulting in damage to the clock spring? That would certainly account for the drivers airbag code.

I've come to a similar conclusion and ordered a clock spring.
It is possible that the steering wheel position sensor is also referenced with the ABS so knocking out the clock spring assembly might also effect that.

Oddly enough, the horn still works.
stidnam
11-25-2021, 05:30 AM
The clock spring likely has two ribbon cables inside. You may have only snapped or dislodged one. I've seen a clock spring where the airbag worked but the rest of the buttons didnt. After pulling it apart I found one ribbon cable broken.

Also good point regarding the angle sensor. May need to be recalibrated.