Vehicle uses 2WD(2 wheel drive) for driving at normal speed, but sometimes it uses 4WD ECM(=TCCU : Transfer Case Control Unit) accordign to driving condition. (cornering or acceleration)
EMC(=Electric Magnetic Clutch) distributes proper torque to front wheel by controling amount of current inside EMC coil.
That time power pressing the multi plate clutch by apply cam is changed by a rate of EMC duty. after multi plate clutch start slip the force for acceletion at front/rear wheel is controlled at a range of 100:0 ~ 50 : 50.
ITM system has 4WD-LOCK function that can make driving force to 50:50 by compulsion according to driver's intention.
If the ITM-ECU decides that the clutch(EMC) and oil are over-heated (above specified value) for more than 1s, this code is set.
When the failure is set there is no signal in the warning lamp, just ITM-ECU sets and stores this code.
Item
Detecting Condition
Possible Cause
DTC Strategy
Tire information Monitoring
Wheel Speed Sensor
Different type of tire or abnormal tire installed
Tire excessively worn down
Excessive tire's slip
Enable Conditions
Driving state
Threshold Value
When an internal temperature of the EMC exceeds the critical value.
Diagnostic Time
1 Sec.
MIL on condition
0.5 Sec.
Fail Safe
Prohibiting ITM control