General Information

4WD Control

P1745 4WD ECU Invalid Part Number - General Information

Component Location





General Description

Many control units is applied to the vehicle due to vehicle to be electronic control type and these perform many controls by receiving signals from sensors. So the common use of each sensors and the need of communizing informations became a prominent figure.
CAN communication method is used at power train (ABS, transmission, engine, ECS etc) control of vehicle because it withstands electronical external noise by spark and can high-speed communication Though CAN communication, ECM and TCM hold engine RPM, APS, step of transmission, decreasing of torque in common and perform the active control.

DTC Description

This DTC is set when inappropriate 4WD ECM (=TCCU : Transfer Case Control Unit) is detected. If failure is detected 4WD ECM prohibits the ITM control.

DTC Detecting Condition





Diagnostic Circuit Diagram