Join Date: Mar 2016
Location: Vancouver, BC, Canada
Vehicle: 2002 Dakota QC 4x4
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
I suggest you get a hold of a wiring diagram to see what is on that circuit. I would wiggle the wiring to see if power cuts out. When using a meter you want to use the frame as ground and also the wiring as ground to get an accurate idea.
I found this, not sure if it pertains to you:
The 5v power supply from the Powertrain Control Module (PCM) is shorted due to a shorted Governor Pressure Sensor. Test & Fix: If the 5v power supply circuit is shorted to ground, the CCD bus is unable to transmit messages and the Powertrain Control Module (PCM) appears to be "dead". The PCM is not damaged when the 5v power supply gets shorted to ground, but does need to be reset by turning the key off for 10 second after the short is removed. Using a DVOM or labscope, measure the voltage on the 5v reference wire at the Throttle Position Sensor (TPS) or Manifold Absolute Pressure (MAP) Sensor. If 5v is not present, unplug the large round connector on the driver's side of the transmission. Turn the key off for 10 seconds. Turn the key on and measure the voltage on the 5v power supply circuit. If the voltage is now 5v, remove the transmission pan and check for shorted wiring inside the transmission. If the wiring is OK, replace the Governor Pressure Sensor.
2002 Dakota Sport QC 4x4, 4.7L, Grand Cherokee TCM
Last edited by Burned; 03-18-2017 at 07:16 PM.