95 Windstar - How do I clear airbag code 21

[dadaddio]

95 Windstar: Due a low speed deer hit, I have replaced both deployed airbags and the controller (reclaimed from a salvage yard). I still have a code 12 - low battery voltage error from the airbag system. How do I resolve this? Is there a battery within the airbag controller itself? If yes, is it serviceable?

Thanks,
David

CORRECTED: Code is 12 - Low Battery

UPDATE: Figured out I had to replace blown 10A fuse which changed code 12 into code 52 Backup Power Supply - Voltage Boost Fault.
How do I clear this fault (tried removing battery for 5 minutes - didn't work)?

[Selectron]

My power distribution diagrams for the '95 are showing a total of three fuses feeding into the airbag system, so you might want to check the other two:

Fuse U, 10 amp, engine compartment fuse box
Fuse 21, 10 amp, interior fuse panel
Fuse 14, 5 amp, interior fuse panel

[dadaddio]

Thanks Selectron. I checked both fuses 14 and 21, both visually and with a multimeter, and they are both OK.

Don't know if they are resettable with a diagnostic tool or if I must replace controller.

Any other ideas?

David

[danielsatur]

Try resetting the computers & control modules.
1) disconnect the battery.
2) Touch the pos cable to gnd for a couple of seconds.
3) Connect battery

[Selectron]

Unfortunately, the only information I have on the airbag system is the power distribution diagram indicating those three fuses.

I was curious about why they were using a voltage booster though so did a little searching, in the course of which I came across a discussion on an F150 forum but which also mentions the Windstar. That links to an article which mentions your two codes - code 12 followed by a code 52, and explains how to clear the code 52. Link

There's also an old post here on the Windstar forum which broadly agrees with that description of how to clear code 52. Link

But then to muddy the waters, there's also a post here on the forum which reckons it's a component failure - thermal fuse - within the airbag control unit. Link

If it really is a thermal fuse failure then the code would still be present after going through the code-clearing procedure. However, if the code clears then it wouldn't have been a thermal fuse failure after all, so if it was my vehicle then I'd probably try clearing it first. Have a read of the three links though and see what you think.