DTC C1612: CAN Time-Out TCM: General Description

The ESP is the acronym for Electronic Stability Program. The ESP is a braking system that combines the functions of a brake servo unit and the ABS (Antilock Braking System) equipment including ESP (Electronic Stability Program). The ESC is a technology that improves the safety of a vehicle's stability by detecting and reducing loss of traction. When ESC detects loss of a steering control, it automatically applies the brakes to help steer the vehicle where the driver intends to go. Braking is automatically applied to wheels individually.

The ESC ECU sends requirement data, such as torque reduction, the number of fuel cut cylinders, and the ESP control request, to the ECM (PCM & TCM) through CAN bus line. The ECM (PCM) performs the fuel cut function according to a request signal from the ESC ECU and then retards an ignition timing. The PCM (TCM) maintains current gear position during the ESP control period in order not to increase power which causes a Kickdown shift.