Many control units is applied to the vehicle due to vehicle to be electronic control type and these perform many controls by receiving signals from sensors. So the common use of 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 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 code is set, if ITM-ECU detects invailid engine information like engine displacement, torque.
If failure is detected 4WD ECM(= TCCU : Transfer Case Control Unit) prohibits the ITM control and cuts the current to control coil.
Item
Detecting Condition
Possible Cause
DTC Strategy
Engine information Monitoring
Reception of a different type of engine size
Enable Conditions
IG KEY ON
Threshold Value
When the 4WD ECM gets a different type of engine information
Diagnostic Time
1 Sec.
MIL on condition
0.5 Sec.
Fail Safe
Prohibiting ITM control