I have checked the voltage @ pin # XXXXX with the ignition on and it reads 8.9 volts. I did this after removing the entire 50 pin connector. all the pins appear to be in good condition, and I cleaned them good with an electrical contact cleaner reassembled, and still had 8.9 volts.
I have been unable to locate a schematic for the ECM module, but I did a random voltage check of all the pins in the connector, and found several with the full 12.8 volts which is what the batteries are reading.
Without a schematic I am not sure where voltage to pin # XXXXX originates, or what it goes through to get there? The check engine light is "not" on so I don`t know if I can get a code out of it or not
while i had the ECM connector loose I ohmed the circuit with the pump unpluged, and it shows that it is clear. after reconnecting the ECM I probed the yellow / white wire @ # XXXXX with the pump still unpluged turned the ignition on and it reads 8.9 volts.
I worked all the wires around on the connector, and there was no fluctuation, just a constant 8.9
I expect this is going to be an expensive repair? I have a haynes manual that seems to indicate this is a simple R & R procedure. all it says after reinstallation of the ECM is to slowly depress the accelerator, and release to allow the accelerator position sensor calibration to be learned.
Is it actually that simple? Is the ECM a dealer item only? and do you have any idea what the cost is?
soo I can install it myself, but I have to purchase it from a dealer and have them reflash it ?