pinout for the PSOM plug

the signal from the Vehicle Speed Sensor first goes through the ABS Module, then to the PSOM, then finally to the ECM

1: Main Power
2: Main Ground
3: Power from key in RUN position
4: Raw VSS/ABS sensor signal In (from ABS or sensor directly)
5: Raw VSS/ABS sensor signal Out (from ABS or sensor directly)
6: -
7: Converted VSS signal Out (converted using PSOM Constant)
8: -
9: PSOM Plug (used to change PSOM constant)
10: -
11: -
12: -

Owner caption November 2014 · Photo 36 of 343