When you pin-out a wire harness, you're measuring resistance (preferably 0 Ω). You identify the proper connector on the finisher and the proper connector on the MFPB, and measure resistance from the pin on the finisher end to the pin on the copier end. I find that it's useful to make a chart on paper, then check them off as you go:
As an example:
Finisher: CN100 MFPB: CN3
Pin1 Pin3 0 Ω
The hardest part is finding the first connection. The rest are usually sequential. If you find a pin-out that's more than 0, possibly ∞, that could be a problem.
The thing that usually throws me when I'm pinning out harnesses is when the meter misbehaves. Occasionally check meter pin to pin to make sure you're getting 0 Ω. A bad meter lead or a bit of corrosion on the meter switch contacts can make it read wildly different. You're meter may be new, but for most of us the meter has been ratting around in the toolcase for at least a decade in highly humid conditions and temperatures from -10F to +100F. =^..^=
Bookmarks