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Short Circuit somewhere in Wiring Harness 140-160

uid 60851's pic
posted by  Grey245 on  Wed Jul 14 11:12 CST 2021
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Could you elaborate on how you determined the short circuit is in the wiring harness? Did a fuse blow? Did you disconnect the fuel pump and aux air valve when measuring for the short?

To answer you questions:
One: try to isolate as much of the wiring as possible by unplugging connectors, if you haven't already (and as suggested by Ron).
A good short circuit to ground will be hard to trace with a multimeter, the resistance is just too low and the resolution of the meter too poor to give you relevant readings when you get closer to the short.
Two: yes, but only if that wire is exclusively going between the aux air valve and the fuel pump, meaning no other circuits are connected to that wire in between.





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