General Information

Automatic Transaxle
U1001 High Speed CAN Communication Bus (H-CAN) - General Information

Component Location





General Description

Several control units are applied to electronically controlled vehicles. These units perform each control with information from various sensors. Thus, sharing signal information from sensors is needed, so CAN communication type whose communication speed is high and insensitive to electrical noise by spark generation is adopted to controlling power-train(PCM(ECM), TCM, ESP PCM(ECM), ABS PCM(ECM)).
As sharing signals of engine speed, APS, gear shifting, torque reduction in ESP and various modules, active control is performed.






DTC Description

This DTC is set when PCM/TCM detects that wrong message is sent or No message is received from HEV CAN communication line.

DTC Detecting Condition





Diagnostic Circuit Diagram





Signal Waveform & Data




Fig 1) Wave form of "CAN COMMUNICATION"
















Operation example
Fig 1) Oil Pump status at key on
Fig 2) Oil Pump status during operating actuating
Fig 3) Channel A : OPU Status, Channel B : HALL Signal (At key on)
Fig 4) Channel A : OPU Status, Channel B : HALL Signal (During operating actuating)