OK, first .... I apologize for this moving around. I was thinking "Interior" or "Electronics" ..... then tonight as I was prepping to post regarding my final "fix" .... I noticed the "General Tech" section and upon further review, I think it belongs here so here is where I brought it.
ME (aka: CrystalPistol) on 10-02-14 @ 2241hrs said:Well, for my day off I persuaded "Wife Unit" to take the '95 to work so I could clean and wax her Subaru. Then a buddy showed up on his recently purchased Gold Wing GL1500 and we went over it good, fixed a few items, drank coffee, and talked shop .... etc.
Then "Wife Unit" came home after 5 pm and asked about a flashing "airbag" light. :facepalm:
Never done that before? :zdunno:
Sure enough, 5 flashes ... pause .... 1 flash ..... long pause ..... repeat. Airbag flashing code 51.
I looked it up, I realize that there was a short and when the short went away, the code tells me that a thermal fuse is blown. I even found a thread about replacing just that fuse and have just ordered a few fuses to affect a fix for the Airbag Diagnostic Monitor.
But first, before I waste a fuse ... I need to search for the source of the short.
Any ideas y'all? I tried "search" to no avail.
Thanks ..... :zbeer:
ME (aka: CrystalPistol) on 10-10-14 @ 2314hrs said:Hey, Thanks .... but yeah, I have the factory "big" book for both the '92 and the '95. Since writing my first post here in this thread, I have gone over every wire in the circuits described and so far .... no signs of shorts.I'm sure there's probably a section in the EVTM which breaks out the air bag system. My info on code 51 says "51 Diagnostic Monitor Internal Thermal Fuse - Open Due to Intermittent Short to Ground". I don't know which circuit this short to ground would be - diagnostic system power module, crash sensor, air bags, etc...
If you don't have the EVTM I can probably snap a pic of the page in mine; I don't think the airbag system changed between 95 and 97.
Funny thing happened today though. This morning early a buddy and I took it to the range for qualifying, all was OK except that persistant flashing code 51. I know, it'll stay until corrected. So afterwards, we came back, total about 80 miles. It was the first time I had driven it since that day the "Wife Unit" used it and that code started.
Well, since it was drizzling rain by then, when I got home I told the "Wife Unit" that we'ld take it to Roanoke this afternoon. When we got in to go, I hit "start" and heard a click and then nothing. All dead. I popped hood and checked cables on near new group 65 battery, negative was loose. I tightened it up and tried, car started and clock was saying 12:00.
So we start towards Roanoke and I'm thinking and start talking and then it hits me, that day she had this Code 51 start I also later found the clock was way off and so I asked her and she said it did show shortly after 12:00 when she looked on the way home even though it was near 5:00 PM but that day .... the car started, just also started that flashing light.
Well, I'm a few miles from home and decide to go back and swap over to another car and not risk another "no start" today. While swapping over a few things, I took a closer look under the hood, and it was then that I saw upon close looking, the negative battery post clamp that's stamped steel had a crack which was why it had loosened up .... and me tightening it was temporary as the crack would only spread.
So, I've been doing some searching on "air bag code 51" and am thinking the loose battery terminal, the clock resetting, and the code 51 aren't so "unrelated". I am thinking that new battery terminal clamps will take care of what the diagnostic sensor saw as a short when she started the car a few days ago and no doubt the loose connection state caused a short and intermitten voltage drop as she started the car and the thermal fuse was blown. This was a short, quick voltage drop after the starter was engaged, likely though while the key was still in start position, and not noticed by "Wife Unit" because car started fast.
I have since received a package of 5 new thermal fuses (NTE8167C (more hits using NTE8167 ... no "C") .... cost me under $10 total for parts, S&H was another $11 though ... but good deal in view of alternatives) to affect repairs to the "unserviceable" Air Bag Diagnostic Module. Gonna try one tomorrow. I have the tools, solder, low temp soldering gun, heat sinks, etc.
Here (that is a link) is where I got the info and it seems pretty straight forward.
As always, I remain open to suggestions, comments, or tales of experiences?