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.
The operating duty of EMC is maintained at 100 : 0 (2WD) for guaranteeing stabilized driving force, accuracy of the control during inside ABS, FTCS, ESP control.
DTC U0122 is set if 4WD ECM can’t receive any response signal from ESP.
Item
Detecting Condition
Possible cause
DTC Strategy
Signal monitoring
Poor Connection
Power supply to each module
Open or short in communication line of 4WD ECM
Open or short in communication line of ESP
Faulty 120? registror(cluster)
Faulty 4WD ECM
Faulty ESP
Enable conditions
IG ON
Threshold value
When APS signals are not inputted
Check Lamp
Lamp ON