A communication line exists between the Engine Control Module(ECM/PCM) and the Transaxle Control Module(TCM). The communication is through a Control Area Network(CAN). Without CAN communication, an independent pin and wiring is needed to receive a sensor information from a ECM/PCM. The more information to be communicated, the more wirings is required. In case of CAN communication type, all the information need to be communicated among control modules such as ECM/PCM and ABS control module use CAN lines.
If there is no message from TCU to ECM/PCM through external CAN line, PCU sets DTC U0101.
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
CAN communication status check | 1. Poor connection |
Enable Conditions |
•
IG ON | |
Threshold Value |
•
No message time from TCU via external CAN | |
Diagnostic Time |
•
Continuous | |
MIL ON Condition |
•
3 driving cycle |
