Circuit Description
WARNING: This page is about a different variant/trim than selected.
Engine torque information is sent to the transmission control module (TCM) by the engine control module (ECM) through the controller area network (CAN). A two-wire circuit is used to communicate data between the ECM and TCM, CAN H and CAN L. A fault in the CAN will not cause DTC P2637 to set by itself. If a communication fault occurs, other DTCs will set before P2637.
When the ECM sends the TCM an invalid engine torque, DTC P2637 sets. DTC P2637 is a type A DTC.