Land Rover Discovery: Front end Sheet Metal Repairs Suspension Top Mount (G1770868)

 Engine Speed and Torque Monitoring

The ECM constantly supplies the TCM with information on engine speed and torque through messages on the CAN powertrain systems bus. The TCM uses this information to calculate the correct and appropriate timing of shift changes. If the messages are not received from the ECM, the TCM will implement a

 Gradient release control (GRC)

With Hill Descent Control (HDC) activated, if the vehicle is stopped on a slope using the brake pedal, GRC will become active (except in the Terrain response system's Sand program). During a hill ascent, when the brake pedal is released, GRC will automatically delay and graduate the brake release, t