Component Location
General Description
The HECU send requirement data, such as Torque reduction, the number of fuel cut cylinders, and ESP 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 ESP control time, in order not to increase power which causes a Kickdown shift.
DTC Description
The HECU checks the CAN communcation lines for normal ESP control, and sets this code if a PCM(ECM) message is not received within predefined time.
DTC Detecting Condition
Item | Detecting Condition | Possible cause |
DTC Strategy | ? CAN massage monitoring | ? Faulty EMS ? Faulty HECU |
Monitoring Period | ? Continuous |
Enable Conditions | ? Faults are detected if PCM(ECM) message was not received on time by the CAN controller of HECU. |
Fail Safe | ? Inhibit the ESP control and allow the ABS/EBD control. |