Greetings,

Issue - Tailgate does not open. Occasionally, the tailgate will open but 90% of they time it does not.

I powered the solenoid and tested the switch, they both work. Not getting any signal however through the wires. Nothing seems cut or corroded.

I also had a noisy rear passenger door actuator. I replaced the actuator and the rear door opens and closes without any issues.

related issue ? 

I know the MICU does not power the tailgate switch if it detects a door open.

i noticed that when all the doors are locked and alarm is armed the alarm will go off the moment you unlock the door from the inside -EXCEPT the very same rear passenger side door. In other words I sit in the vehicle, arm the alarm with doors locked. Move the lock switch on any door and the alarm rings but not the rear passenger door. 

I do not see any cut or corroded wire. But I am pretty sure this is why the tailgate won’t open 

local Garage says it’s the MICU module. Why would it not work for just one door lock ? Seems strange.

any ideas anyone?????