General Information

Component Location





General Description

The HECU send requirement data, such as Torque reduction, the number of fuel cut cylinders and ESC control requests, to the Engine PCM (ECM & TCM) through CAN bus line.
The Engine PCM (ECM) performs fuel cut functions according to requests from the HECU and retards ignition timing by torque reduction requests.
The PCM (TCM) maintains current gear positions during ESC control time, in order not to increase power which causes a Kickdown shift.

DTC Description

The HECU checks the CAN communication lines for normal ESC control and sets this code if the data received between the EMS2 and TCM is not the same.
The HECU will not detect this code until 2 seconds after the IG KEY is turned ON.

DTC Detecting Condition





Diagnostic Circuit Diagram