CAN communication is a parallel circuit to interchange information among each units. CAN communication can share much information with units more faster and more efficiently by using specified language.
CAN-High line is twisted with CAN-Low line as a purpose in preventing from a noise.
ITM-ECU performs active control by sharing signals of engine RPM, APS, shift position, torque reduction.
This code related to communication line between PCU, ABS, ESP and TCCU is set when CAN signal from PCU, ABS, ESP can’t received for more than 1sec or ECU internal error occur.
If failure is detected ITM-ECU prohibits the ITM control and cuts the current to control coil.
Item
Detecting Condition
Possible Cause
DTC Strategy
? ECU-ITM communication line or ECU side malfunction.
? CAN HIGH/LOW circuit open/short.
? Faulty CAN MODULE.
Enable Conditions
? Message present 1.0 sec self clearing
Threshold Value
? Loss of EMS1 or EMS2 message for greater than 1 second, and a fault will be set.
Diagnostic Time
? 1 sec
MIL on condition
? 0.5 Sec.
Fail Safe
? ECU will not react to Engine speed or torque. ECU will not send current to the clutch coil.