Due to vehicle electronic control many control units apply to the vehicle and these perform many controls by receiving signals from sensor. So the common use among each sensors and the need of comunizing informations became a prominent figure. CAN comunication method is used at power train (ABS, trnasmission, engine, ECS etc) control of vehicle because it withstands eletronical external noise by generating spark and can high-speed comunication. Though CAN communication, ECM and TCM hold engin RPM, APS, step of trensmission, decreasing of torque in common and perform the active control.
This failure code is set if CAN BUS ERROR on TCCU is continued for more than 1sec which is caused by poor contact on CAN BUS or the failure of ECM and ABS(ESP).
Item
Detecting Condition
Possible Cause
DTC Strategy
? CAN Transmit error/loss of communication
? CAN Bus
? ABS MODULE,TCCU connector looseness and poor terminal to wire connection.
? CAN comm line circuit open/short.
? Faulty ECU .
? Faulty ABS MODULE .
? Faulty TCCU ..
Enable Conditions
? Ignition cycle required
Threshold Value
? CAN transmit counter exceeds 255
Diagnostic Time
MIL on condition
Fail Safe