PCM wiring

Unknown member · Jul 2, 2005

Hi,

I am trying to trace the electrical power into my PCM, I am not sure it is getting power. What wires should I be checking I think it is b15 and b31 but I am not sure where those lead going from PCM to battery.

thanks, and it is 94 Impala SS.

Guest · Jul 2, 2005

Your terminals are right. They both feed off the fuel pump fuse in the underhood fuse box.

Guest · Jul 3, 2005

I thought the PCM had it's own fuse for power.

Guest · Jul 3, 2005

That's not what I see in the FSM. It shares a fuse with the pump.

PCM wiring

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