Infotainment screen goes blank after selecting the TRAILERING APP

[Ranger473]

I just replaced the Trailer Lamp Contol Module to fix an issue where the #2 Pin (Tail Lights) was always hot.

 

Now, when I select the Trailer App on the Infotainment Screen, the screen immediately goes blank or black.  I can select the Home button below the screen and get the screen back and I can select any other app and it works correctly - I have tried them all.  I have shut the truck off and re-started it several times to no effect.  I have tried touching the blank screen in various spots to see if the app is running but I am unable to get any response.

 

Any ideas?

[Ranger473]

UPDATE - SOLVED.....?

My theory is that a little bit of dirt fell into the connector while I was installing the new module and that the dirt compromised the electrical signal.

 

I pulled the connecter off the Trailer Lamp Control Module, used 25psi compressed air to blow out the male and female sides then used some electrical contact cleaner on both sides, followed again with compressed air.

 

I made a shield out of a cereal box (see photo), put the shield in place, and then did the work.  I placed the connector back on the module loosely and then pulled the shield out as I worked the connector up into place on the module.

 

Now the Trailering App loads as intended.  I am still suspicious that the cause of the blank screen may be a different and intermittent gremlin so I am cautiously optimistic.  

 

If the problem re-occurs, I will update this thread but if I don't do an update, it will because the blank screen has not re-occurred.

[UWSkier]

Aah yes, the Nintendo fix technique.  Good work!