Circuit Description
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
The engine control module (ECM) sends throttle plate position data to the transmission control module (TCM). The data is sent to the TCM through a communication network called the controller area network (CAN). Two circuits are used to communicate CAN data between the ECM and TCM. A fault in the CAN will not cause DTC P1795 to set by itself. If a CAN fault occurs, other DTCs will set before DTC P1795.
When the TCM receives invalid throttle plate position data from the ECM, DTC P1795 sets. DTC P1795 is a type A DTC.