Circuit Description
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Pressure control solenoid 1 (PCS1) is used to control on-coming, off-going, and holding pressure in any 1 of 5 clutches. This solenoid is referred to as a pressure proportional to current (PPC) solenoid, since the output hydraulic pressure supplied by this solenoid is proportional to the controlled current command.
The transmission control module (TCM) uses information from the turbine and output speed sensors to detect if a clutch is slipping. The clutch being controlled by PCS1 will vary depending on the shift that was being completed.
DTC P2724 is a type A DTC.