Circuit Description
WARNING: This page is about a different variant/trim than selected.
The pressure switch manifold (PSM) is a multiple-switch assembly made up of 3 normally open (N/O) pressure switches and 1 normally closed (N/C) pressure switch. Pressure switch 3 (PS3) monitors shift valve 3 positioning and relays it to the transmission control module (TCM).
DTC P0873 is a type A DTC.