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International Automotive Technicians Network
Re: P0500
Posted to Technical Theory Forum on 4/2/2020

Went back today, and removed all the 'easy' modules from the network, still no change in the 2.5V...shop got to the ECM (no easy feat on this pile), and the VREF was the same. Cut the wire from the PCM out, and the PCM side was 4.9V! So, the next chore, was to... Login to read more.