Steering Wheel Angle Sensor installed in steering wheel prevents a state of TCB(Tight Corner Braking) by sensing the rotating direction & straight driving of vehicle and is used for EMC duty control. In case of ESP system applied 4WD ECU receives this signal through CAN line, If it is not the case 4WD ECU receives this signal from Steering Wheel Angle Sensor directly.
? TCB (Tight Corner Braking) : TCB is that the vehicle makes an abnormal noise and hesistation when the vehicle turns left / right fully with low speed on a paved road.
This code related to communication line between ECU and TCCU is set when CAN signal from ECU can’t received for more than 1sec or ECU internal error occur.
If failure is detected TCCU prohibits the ITM control.
Item
Detecting Condition
Possible Cause
DTC Strategy
? SAS-ITM Communication Line, or ECU side malfunction
? CAN HIGH/LOW circuit open/short.
? Faulty SAS(ESP only).
? Faulty TCCU.
Enable Conditions
? Message present 1.0 sec self clearing
Threshold Value
? Loss of the Wheel Speed sensor signals for greater than one (1) second, and a fault will be set
Diagnostic Time
? 1 sec
MIL on condition
? 0.5 Sec.
Fail Safe
? See Speed Sensors