Compression Ignition Addict
Join Date: Dec 2007
Thanked 249 Times in 240 Posts
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The GPR is controlled by the PCM providing ground to the relays coil when it decides the GPs are necessary. When the Key is ON 12v is supplied to that coil (this is all about those sm wires of course)
What you describe would require BOTH the path to ground ground to be present in one wire AND the supply of 12v despite the Key being OFF!
I can't imagine what could cause those two things to be happening simultaneously...
So, first - are you sure that's what's going on?
Second - could you have wires connected in a Really "screwy" way (NOT just backwards or anything, that wouldn't matter, I mean cross-connected or something)?