Theory Of Operation
WARNING: This page is about a different car, the 2018 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
The purpose of the diagnostic is to monitor the positive engine torque request calculation in the Transmission Control Module (TCM) and the engine response resulting from the positive engine torque request. This diagnostic includes the following checks:
- Rationality check of the engine torque request
- Rationality check of the engine torque request magnitude
- Rationality check of speed gradients during gearshifts