where is the ground for pcm
#1
#2
The PCM only grounds the GPR when the oil temp is cold. The ground is the aft small post on the GPR. If you are checking it with a volt meter or a test light it will show power as it is attached to the coil on the GPR. You can simply apply a ground to it for testing to check the GPR.
Have you verified the GPR is working properly? Usually they are the fail point.
The ground wire out of the PCM for the GPR is pin 101 on the 2002 trucks. Should be similar or close on the other ones. Look for the violet/orange wire.
Have you verified the GPR is working properly? Usually they are the fail point.
The ground wire out of the PCM for the GPR is pin 101 on the 2002 trucks. Should be similar or close on the other ones. Look for the violet/orange wire.
#3
#6
please disregard this thread and go to this one
https://www.ford-trucks.com/forums/1...l#post10867068
sorry for confusion
https://www.ford-trucks.com/forums/1...l#post10867068
sorry for confusion
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