DTC C2228: CAN Signal Error TCM For SCC (Check TCM): General Description

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