CAN communication is applied just for FTCSs( Full Traction Control Systems) installed in the vehicle for sending requirement data, such as Torque reduction, the number of fuel cut cylinders, and TCS control requests, to the Engine ECM & TCU. The Engine ECM performs fuel cut functions according to requests from the ABS ECU and retards ignition timing by torque reduction requests. The TCU maintains current gear positions during TCS control time, by not increasing power which causes a Kickdown shift.
The HECU checks the CAN communication lines for normal TCS control, and sets this code if CAN BUS OFF status is detected for more than 100ms.
Item | Detecting Condition | Possible cause |
DTC Strategy | ● Open or short circuit monitoring | ● Open or short circuit in CAN line |
Detect Mode | ● Initial Check ● Outside the ABS control cycle ● Inside the ABS control cycle ● Diagnosis mode ● Failure mode | |
Enable Conditions | ● In case CAN BUS off state continued for more than 100ms. | |
Fail Safe | ● Inhibit the TCS/ESP control and allow the ABS/EBD control. Meanwhile, stop checking the TCS/ESP switch failure under the TCS/ESP control. ● The TCS/ESP warning lamps are activated. |
