General Information

4WD Control
P0605 ITCC ECU EEPROM Error - General Information

Component Location





General Description

ITCC(Intelligent Torque Control Coupling) 4WD:
Though CAN communication, ECM and TCM hold engin RPM, APS, step of trensmission, decreasing of torque in common and perform the active control.ITCC system has 4WD-LOCK function that can make driving force to 50:50 by compulsion according to driver's intention.

DTC Description

This DTC is set when inappropriate 4WD-ECM is detected(EEPROM checksum). If failure is detected "4WD-ECM" prohibits the "ITCC" control and vehicle is controlled with 2WD by intercepting EMC current.

DTC Detecting Condition





Diagnostic Circuit





Signal Waveform




FIG.1) CAN Signal : high & low