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.
When the failure is set there is no signal in the warning lamp, just ITM-ECU sets and stores this code.
If the ITM-ECU decides that the clutch(EMC) and oil are over-heated (above specified value) for more than 1s.
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 |
•
Temperature 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 |
•
No MIL ON | |
Fail Safe |
•
4WD Lock Mode, 4WD-LOCK Lamp ON |
