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Old 12-04-2012, 02:00 PM   #1
jester547
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Airbag issue

2005 ford focus zx5 ses. Brought it in to get codes scanned, got codes: air bag b1342 faulty control module, gem b1499 left turn signal fault, gen b1503 right turn signal fault, Instrument cluster b1318 low battery voltage at module. Turn signals work fine and no problems can be seen in the cluster (tests fine). On the airbag side of things did some general inspections and found under the driver seat the wires that run underneath, have all been spliced together looks like a fairly good job whoever did it used heat shrink on each joint. The previous owner said his mechanic said they could never get the light in the dash to go out. So should I trust that the rcm is faulty ($100 for a new one) or what route of action should I take.


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Old 12-04-2012, 08:56 PM   #2
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My question is, why are there spliced wires?
To me that says that the car was in a previous accident with airbag deployment. Bearing that in mind, I don't doubt that the reconstruction of the car wasn't fully completed. Or, as in the case of the seat, it was done with salvage parts that don't communicate well with the parts that are supposed to be in the car,,, as in they pulled parts form another Focus with SRS and not the specific part numbers that belong in your car.

This may be a argues process but, what I would do is go through and write down the part numbers you find and check them against what Ford says should be in the car. It's probably best to go to Ford parts in person with the list. That way they can tell you is a part # has been superseded or renumbered.

IMO, verifying the correct parts are there is step #1.
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Old 12-04-2012, 09:23 PM   #3
jester547
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The control module is the correct part number (the possible end dash letters are interchangeable) (other components will be a bit of witch hunt) Of the wires that are spliced while at a wrecker I tore into were the wires are, and found only 6 or so wires that go to the rcm in the bundle of spliced wires. I'll look to see if any other wires pertaining to the rcm have been spliced.
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Old 12-05-2012, 01:09 PM   #4
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The correct module on at least earlier models had to have correct software flashed inside, simply taking one from the yard with right number won't do it. Also once module has been in crash with deployment it must be reflashed clean too or light will not go out. Software has exact car VIN and other stuff inside it.
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Old 12-05-2012, 02:38 PM   #5
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That topic on module replacement has come up on the forums before and it has been said that the module can just be swapped; and it has worked for other people. Now weather that works in my case or not is another story.
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Old 12-05-2012, 09:15 PM   #6
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Other reason, insurance co. can reject payment for incorrect module not matching software, they go after them quick since it can get them off the hook for accident. It screams unprofessional repair-not covered under many policies.
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Old 12-05-2012, 10:10 PM   #7
jester547
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Changed the rcm and it seems to have fixed the light in the dash. Another possible issue I'm seeing is the passenger seat, how is the on/off for that supposed to work. Obviously it uses a pressure sensor/switch in seat to sense the occupant. In my car if pressure is applied to the seat without the seatbelt in, the airbag off light will come on. I'm also sure if the seat belt is in and no weight is on the seat the light is also on. I'd have to test to see if the light comes on with occupant and seat belt. seems a bit wonky to me, shouldn't the airbag be on all the time; or at least when there's an occupant in the seat.
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