Component Location
General Description

Due to vehicle electronic control many control units apply to the vehicle and these perform many controls by receiving signals from sensor. So the common use among each sensors and the need of comunizing informations became a prominent figure. CAN comunication method is used at power train (ABS, trnasmission, engine, ECS etc) control of vehicle because it withstands eletronical external noise by generating spark and can high-speed comunication. Though CAN communication, ECM and TCM hold engin RPM, APS, step of trensmission, decreasing of torque in common and perform the active control.

DTC Description

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.

DTC Detecting Condition

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

Schematic Diagram
Signal Waveform
Яндекс.Метрика