Code 51
Thread Starter
1994 F150 XLT 5.8L 2wd
Joined: Mar 2014
Posts: 2,150
Likes: 249
From: Iowa
Code 51
So after I changed my clock spring I had a code 51 popping on my air bag light. I think I may have hooked the battery up after removing the air bag to finish installing a stereo, causing the ADM to blow it's thermal fuse since there is a grounding wire on the air bag connectors that makes contact when unhooked and any current will throw the temp fuse and cause an intermittent grounding warning.
I followed a video I found on youtube and ordered G4A01167C (167* thermal fuse) to replace the burnt one (168* thermal fuse) from newark.com.
Removed the ADM
Pulled the cover off with tabs and removed the board
Removed the solder around the wires of the fuse housing
Bad pic but I separated the housing, sort of, got it to hot while removing
the solder and melted the black and white sides together so I just tossed
it.
Bent the new thermal fuse to the shape of the old one (the one on top with the wires on the outside of the resistor).
It's fine that I destroyed the housing because the new TF would have taken a lot of work to make fit, I just re-soldered the resistor and TF back in there places.
They had a brass clip holding them together in the housing so I have them touching when I soldered them in place. Installed ADM back under the dash, went for a drive and no lights blinking at me. Cost me a total of $20, $8 for 2 thermal fuses (just incase I screwed one up or I was wrong about the cause of the ground out fault) and $12 for a soldering iron with solder sucker gizmo and roll of solder, if it hadn't been for the sucker this would have taken forever. Just heated up the old solder and "suck", took longer for the iron to heat up than it did to remove the black and white housing from the board. I needed a soldering iron anyway so I don't really count that as part of the cost. So really for $8 I stopped the flashing light that has been bugging me since I bought this truck. The End.
I followed a video I found on youtube and ordered G4A01167C (167* thermal fuse) to replace the burnt one (168* thermal fuse) from newark.com.
Removed the ADM
Pulled the cover off with tabs and removed the board
Removed the solder around the wires of the fuse housing
Bad pic but I separated the housing, sort of, got it to hot while removing
the solder and melted the black and white sides together so I just tossed
it.
Bent the new thermal fuse to the shape of the old one (the one on top with the wires on the outside of the resistor).
It's fine that I destroyed the housing because the new TF would have taken a lot of work to make fit, I just re-soldered the resistor and TF back in there places.
They had a brass clip holding them together in the housing so I have them touching when I soldered them in place. Installed ADM back under the dash, went for a drive and no lights blinking at me. Cost me a total of $20, $8 for 2 thermal fuses (just incase I screwed one up or I was wrong about the cause of the ground out fault) and $12 for a soldering iron with solder sucker gizmo and roll of solder, if it hadn't been for the sucker this would have taken forever. Just heated up the old solder and "suck", took longer for the iron to heat up than it did to remove the black and white housing from the board. I needed a soldering iron anyway so I don't really count that as part of the cost. So really for $8 I stopped the flashing light that has been bugging me since I bought this truck. The End.
