Blown ECM 1 fuse?

[zcarczar]

Today I was out playing around in my truck and went to climb a fairly tall ledge, probably about 30" high and hit it a little to hard and blew the ECM 1 fuse, I then put another one in and went to try and cruise up the ledge and blew another fuse. I then put another one back in and backed off the ledge and havent blown a fuse since, but does anybody have a clue why this might be happening and what is all on the ECM 1 fuse circuit? I figure I have a short somewhere, but I need to know where to look first. /forums/images/graemlins/dunno.gif

 

[willyswanter]

ECM-1 should be sending power to the Vehicle Speed Sensor through a Pink/Blk wire and to the A6 terminal on the ECM through another Pink/Blk wire.

My guess would be the VSS wire got pinched on something underneath while you were doing your thang!

 

[zcarczar]

Hmmmm, would that cause the truck to die though? Cause it wouldnt start until I put the new fuse in.

 

[willyswanter]

Well with no power to your computer I could see that causing your truck not to start, there not just paper weights you know /forums/images/graemlins/rotfl.gif

 

[dave_90_blazer]

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Hmmmm, would that cause the truck to die though? Cause it wouldnt start until I put the new fuse in.

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and to the A6 terminal on the ECM through another Pink/Blk wire.

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once the fuse blows, the ECM has no power

 

[zcarczar]

duh! if I had just read your post a little better I would haven't of had to ask that last question. Ok, that makes sense now, wonder if I just jared the ECM from slamming into the ledge a little too hard with the frame or something. I geuss I will go on a wire hunt tommorrow looking for a short.