U0140

DTC U0100 No engine data is received.
DTC U0122 No VDC data is received.
DTC U0140 No body integration data is received.
DTC U0155 No meter data is received.

Circuit description

The transmission control computer ASSY sends/receives signals to/from ECMs via CAN communication.

NOTE:
^ Problems on the CAN bus (communication line) can be checked from the DLC3 connector. (Except when a DLC3 branch line is disconnected.)
^ Diagnostic codes related to CAN communication can be checked using SSM3.
^ Although DLC3 is connected to the CAN communication line, CAN communication cannot detect problems on the DLC3 branch lines.





Monitor description

TCM calculates the heat amount absorbed by friction material based on the difference between turbine speed and output shaft speed (slipping clutch). When the amount of heat absorption exceeds a certain value, TCM turns on MIL and outputs diagnostic codes.

CAUTION:
If the vehicle continues driving in such a condition, the clutch burns out and the vehicle cannot be driven.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS





TYPICAL MALFUNCTION THRESHOLDS
U0100: No communication with TCM





U0122: Lost communication with VSC





Inspection steps