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No Speedometer troubleshooting 00 f250 6spd 4x4
Replaced VSS in the rear & still same problem. No speedo, odometer, no cruise control(but no abs dash light)
-I omed out the plug & 2 wires from the vss to the abs unit behind the drivers side headlight, no short or high resistance found there.
-I checked grounds
-I pulled the GEM behind the drivers footwell fuse box, cleaned all contacts. & reinstalled, no change. I didn’t know which connectors to check specifically.
Under abs category I’m getting c1226, c1229, & c1230 error codes. I think I got a P0500 also but it hasn’t come back
I have a service manual on order but in the meantime I would appreciate any help on how to trace the circuit back towards the pcm from the abs module, and how to test the speedometer it’s self.
Thanks for any input or diagrams/pin outs