Rear speed sensor is located at front of propeller shaft. This sensor receives information on wheel speed which it sends to TCCU. TCCU compares the front and rear speed sensor signals and monitors the difference in wheel rotation. This sensor signal is used to decide torque distribution amount for front and rear wheels. By rotating wheel a Hall-effect wave signal is generated.
This trouble code is set if the Rear Speed Sensor voltage(High) is higher than specified value.
Item
Detecting Condition
Possible Cause
DTC Strategy
? REAR speed sensor voltage High
? Power supply malfunction.
? Rear speed sensor,TCCU connector looseness and poor terminal to wire connection.
? Rear speed sensor circuit open or short to B+.
? Faulty Rear speed sensor .
? Faulty TCCU .
Enable Conditions
? Fault recovers 0.5 sec self clearing
Threshold Value
? >4.8
Diagnostic Time
? 0.5 sec
MIL on condition
? No Flash
Fail Safe
? 4H mode fail, Front speed sensor, EMC Touch off level fixing. 4L Mode fail, EMC Maximum level fixing.