Thanks for the reply. I should have clarified, these are 2 separate issues that happened at 2 separate times. I was an ASE Tech certified in Brakes and S&S, electrical diagnosis was not my forte.
Issue "A":
Roughly 5 years ago, the Pass Rear Door Ajar issue started, at first it was VEY random, but eventually it became permanent.
Issue "B":
Then approx 2 years ago the Driver Seat stopped moving or responding to ANY position switch input as well as at that time, the Driver Seat Heaters stopped working.
Issue A- Please tell me if my logic is correct.
Today, I went and checked the voltage readings at the BCM Connector C6 terminals a2 (RR Door Ajar) and a3 (LR Door Ajar). Since the LR Door Ajar switch is known to work properly, I got a baseline from it.
With the LR door closed, the voltage at a3 is 10.7v, opening the door causes this to drop to 0.0v
The voltage at a2 (for the RR door) is 0.5v and drops to 0.0v when opening the door.
To confirm proper operation of the switches, I swapped the terminals a2 and a3. With ck#748 (for RR door) plugged into terminal a3, the vehicle recognized the LR Door being opened when I opened the RR door. In my opinion, this confirmed proper switch function in the rear doors.
Issue B- Thinking of plugging in a new DDM/Switch and see if that solves the seat movement and heater issue. What is bizarre is that the adjustable pedals work fine and that switch plugs into the DDM.
Sunday, January 5th, 2025 AT 4:54 PM
