Fuel pump does not prime with key on nor in start.
Fuel pump has a voltage drop, it reads 9.0volts.
ignition fuse 7.5 amp intermittently blows out.
no codes on diagnostics.
the transmission shifter is stuck on park and I cannot hear the solenoid when pressing the lock release button.
Brake light switch does not light up all rear lights the one on rear windshield does not work; bulb is good.
ECM powers and grounds are good.
control wire red white wire, from ECM to open circuit relay control side reads 2.0 volts it does not ground to 0.0 volts and the 5v reference voltage is stuck on 2.0 volts.
camshaft voltage is 0.1 volt.
crank shaft voltage is 3.4 volts.
throttle sensor has 5 v fef
mass air flow has 5 v ref
Is this a short to ground?
Is this a short to positive?
In engine bay fuse box on the positive side of battery used a test light to test for short it is dimly lit when I press brake pedal it get brighter.
Use a volt meter to test for parasitic draws on the negative side of battery it is 3.4 amps that is high.
I opened the ECM could not see solder damage nor burned spots, transistor, capacitors all look normal. Could not smell smoke board is not cracked it looks good cannot call the ECM.
It has a brand new fuel pump it has injector power; it has coil power; the neutral safety switch looks normal; the shifter solenoid looks normal it responds to power.
The EFI relay is warm to touch and the open circuit relay too.
Thank you for your due diligence and support.
have the same problem?
Thursday, November 7th, 2019 AT 6:54 AM