In case of the vehicle installed ESP & TCS(ABC CONTROL MODULE), ABS control module sends the wheel speed signal to 4WD(ECU) by CAN comunication after ABS control module recieves the wheel speed signal.
This failure code is related to the TCCU communication line between ECU and 4WD(ECU) and is set if there is no input signal to TCCU.
Item
Detecting Condition
Possible Cause
DTC Strategy
? ECU-ITM Communication Line, or ECU side malfunction
? ECM,TCCU connector looseness and poor terminal to wire connection.
? CAN HIGH/LOW circuit open/short.
? Faulty ECM .
? Faulty TCCU ..
Enable Conditions
? Message present 1.0 sec self clearing
Threshold Value
? Loss of Signal
Diagnostic Time
? 1 sec
MIL on condition
? 0.5 Sec.
Fail Safe