CAN communication circuits consist of two data lines (high and low) along with terminating resistors. The PCM, TCCM, TCM, and ABS ECUs are networked via CAN.
PCM, TCCM, TCM and ABS communicate their information to control Engine, Transmission and Brake.
DTC U0101 is set if TCCM can’t receive any response signal from TCM
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
CAN Signal Check |
•
Poor Connection in connectors
•
Power supply to each module
•
Open or short in CAN communication line of PCM
•
Open or short in CAN communication line of TCCM
•
Faulty 120Ω registor(Cluster)
•
Faulty PCM
•
Faulty TCM |
Enable Conditions |
•
IG ON | |
Threshold value |
•
No CAN message from TCM for more than 1 sec. | |
MIL ON Condition |
•
Lamp ON |
