Wow, I haven't been here in ages... glad to see there's still some activity on this part of the forum!
So I fired up the MSP for the first time in a few months after a bunch of misc work, and I'm greeted with a dead speedo, and the ABS and Brake lights both on steady. CEL came on after a few miles with a P0500 code (ABS module problems). I wasn't able to pull any codes using the diagnostic port in the engine bay, which seemed odd.
So I moved on to checking the ABS control module harness. +12v power is good, all 4 wheel sensors read 1.35kOhm, but the ground pin (AA in the attachment below) has no continuity.
This might be a long shot, but does anyone happen to know how the ABS ground wire is routed through the harness and where it actually connects to ground? That would save me at least a little bit of hunting through the engine wiring harness.
The only other clues I have are that I removed an aftermarket alarm system, and also built a new fuel injector harness since I last had the car running. I'm guessing I could have nicked a ground wire at that time... the alarm system was 100% under the dash, and I did have to cut the fuel injector wires where they meet up with the main engine wiring harness, but those were the only two places I touched any wiring.
Thanks!
So I fired up the MSP for the first time in a few months after a bunch of misc work, and I'm greeted with a dead speedo, and the ABS and Brake lights both on steady. CEL came on after a few miles with a P0500 code (ABS module problems). I wasn't able to pull any codes using the diagnostic port in the engine bay, which seemed odd.
So I moved on to checking the ABS control module harness. +12v power is good, all 4 wheel sensors read 1.35kOhm, but the ground pin (AA in the attachment below) has no continuity.
This might be a long shot, but does anyone happen to know how the ABS ground wire is routed through the harness and where it actually connects to ground? That would save me at least a little bit of hunting through the engine wiring harness.
The only other clues I have are that I removed an aftermarket alarm system, and also built a new fuel injector harness since I last had the car running. I'm guessing I could have nicked a ground wire at that time... the alarm system was 100% under the dash, and I did have to cut the fuel injector wires where they meet up with the main engine wiring harness, but those were the only two places I touched any wiring.
Thanks!
