Originally Posted by 1sweetride

- Auto transmission
- no cooling fan rotation
- all fuses on RCM verified good
- Traction control output RCM plug C 4 &5 verified
- illumination mod fuse 4 (power for shift and trans mod) verified
am now determining what options I have for verifying CAN bus operation.
The start sequence, as I recall, when Key is in "on" the fuel pump will run for 2 seconds, but should only happen in park or neutral.( not happening on mine) Do any of the lights on the dash extinguish as the different mod come on line and report to the ECU.
On mine the TPMS lamp goes out,(discreet connection) and seatbelt lamp goes out. Can't remember if anything else changes or does the dash stay like that until engine start. Just trying to determine if the car is providing any clues on CAN bus health.
When shifter is moved from park to drive ,reverse it displayed up on the instrument cluster so believe that mod is good.
Think I will pull trans mod and verify power to board.
Currently looking at what options I have to check CAN bus
Thanks for the pointers