chime noise
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chime noise
Ok I replace an ignition module and have always had a bad clockspring bit after I replace module the 5 chimes every 30 or so minutes staryed to happen and now it won't stop chiming it does it continuously door open or closed. Key in or out just wondering if replacing clockspring will solve it or is it a bad module
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From: SW Florida
The 5 chimes (repeated in groups of 5) simply means your airbag idiot light is inoperative. Probably just the bulb finally burnt out.
The airbag diagnostic module chimes to get your attention, because with the bulb blown, it has no other way of warning you. Note that even if there are no faults stored in the module, a blown bulb will still cause it to chime.
The airbag diagnostic module chimes to get your attention, because with the bulb blown, it has no other way of warning you. Note that even if there are no faults stored in the module, a blown bulb will still cause it to chime.
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From: SW Florida
That fuse is a thermal fuse, not a current limiting fuse. They're normally used to prevent an overheat condition in things like coffee makers and such, but the airbag module uses it as a self-destruct feature.
When you opened up the module you found that fuse inside a little plastic housing on the board, right? Did you also notice the resistor in there next to it? What happens is when the module detects certain faults, it sends current to that resistor next to the thermal fuse and the resistor heats up and blows the fuse. What this actually accomplishes I can't say for SURE, but I'm fairly certain it disables the airbag firing circuit... I'd have to see a schematic to be sure though.
Ford says this is not a repairable part and to replace the entire module when that fuse blows. I say otherwise... if you know the value of that fuse you could certainly replace it after you fix the problem that caused it to blow in the first place.
When you opened up the module you found that fuse inside a little plastic housing on the board, right? Did you also notice the resistor in there next to it? What happens is when the module detects certain faults, it sends current to that resistor next to the thermal fuse and the resistor heats up and blows the fuse. What this actually accomplishes I can't say for SURE, but I'm fairly certain it disables the airbag firing circuit... I'd have to see a schematic to be sure though.
Ford says this is not a repairable part and to replace the entire module when that fuse blows. I say otherwise... if you know the value of that fuse you could certainly replace it after you fix the problem that caused it to blow in the first place.
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Look what I found with a quick Google search! 
HOW TO GUIDE: Airbag Code #51 Fix w/ pics - ProbeTalk.com Forums
HOW TO GUIDE: Airbag Code #51 Fix w/ pics - ProbeTalk.com Forums
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From: SW Florida
Lol. I took mine out because of some modifications I made to my frame with the winch mount, and decided to have some fun with it like I always do with old airbags. I wanted the trim piece so my steering wheel looked stock, but I took the explosive charge off the back, buried it in the yard, moved the truck and everyone else a good distance away, and since my battery charger refuses to put out any juice unless it sees an actual battery connected, I wired the squib to an extension cord and plugged it in the wall... and TWO whole seconds later the damn thing finally fired. Lot of good that would have done in a wreck... 
Maybe it's just cause I used ten times the normal voltage to fire it (120V instead of 12V) but I don't see why it would have mattered.
Maybe it's just cause I used ten times the normal voltage to fire it (120V instead of 12V) but I don't see why it would have mattered.
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Nice write up doesn't look to bad of a job. Do you know where air bag sensors are on a 94 f150 , or how to check for multiple codes originally I only had the code for the clock spring then the fuse blew and threw the code for the fuse? Thanks for the input
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Primary crash sensors are up front on the core support, one on each side. The safing sensor on mine (Supercab) is just aft of the door opening, can't remember but I think it was the passenger side. Not sure where it is on other cabs. And the codes will flash out on the airbag light one after the other.
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