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 U0001 is set when TCCM detects CAN communication error.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
CAN Signal Check |
•
Poor connection
•
Power supply to each Module
•
Open or short in PCM communication line
•
Open or short in TCCM communication line
•
120Ω register(Inside cluster)
•
PCM |
Enable Conditions |
•
IG ON | |
Threshold value |
•
Failure on CAN communication line for more than 5 sec. | |
MIL ON Condition |
•
Lamp OFF |
