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Old 08-15-2013, 09:54 PM
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Iceman5192
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Ok I just did some more check and what I got is this
VMV = 34 ohms
VMV Connector = 11.8V, now its 11.5v after some poking around
PCM Connector = steady 12.4v for pins 56(VMV) and 67(Vent Canister),
the ohms on it were fluctuating between 400 and 1900 my multimeter
only goes to 2000

I take my reading by shoving two sewing pins into the connector as a
way of measuring my connectors.

I think its the VMV Connector just because why would voltage drop
between the PCM and the VMV. I started the truck and the voltage
on the VMV connector went up to 13.2v. Think I'm on the right
path?

Got myself a test light and a wiring diagram and think I found the problem.
I wire that goes from the VMV to the fuses was reading 12.4v, and 12.4v
when connected to the test light. The wire going from the VMV to the
PCM was reading 12.4v, but dropped to 7.3v when I hooked the test light
to it. I disconnected the PCM and tested that pin and got the same result.

Now I just don't know how to replace that wire. I should probably just
get a whole new PCM harness. Ideas?