Trunk release activates with door unlock button

[Henry]

I have a 300a that randomly had all of the door locks/ddm stop working. It had a corroded wire in the passenger inner fender which I repair. Now all DDM functions work as they should except the trunk release will activate when locking/unlocking the doors approximately 50% of the time. I've tried different DDMs and a different LCM with the same outcome. Does anybody have any wiring diagrams for the trunk release/ddm for grounds or common wiring points that could cause this? I've already checked the wiring in the drivers door/door jam and found no problems.

 

[RF Overlord]

Does the issue happen only with the door lock/unlock switches or does it happen with the keypad and/or the fob as well?

 

[Henry]

It happens with the fob as well. The DDM has 2 trunk release outputs. One is putting out a small amount of power and causing the trunk to open. I've tried cleaning all grounds on both kick panels multiple times. It has me stumped.

 

[sailsmen]

change the code on the door pad.

 

[Henry]

change the code on the door pad.

When I swap to a different DDM, the code is already switched (using the code from the new DDM) and the car does the same thing.

 

[Turbov6Bryan]

Run a new wire from the trunk release to the DDM, do not use the OEM wire at all.

Isolating the power wire will fix it