CAN communication circuits consist of two data lines (high and low) along with terminating resistors. The PCM, TCCM, TCM, and EP are networked via CAN.
PCM, TCCM, TCM and ESP communicate their information to control Engine, Transmission and Brake.
DTC U0122 is set if TCCM can’t receive any response signal from ESP.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
CAN Signal Check |
•
Poor Connection
•
Power supply to each module
•
Open or short in communication line of PCM
•
Open or short in communication line of TCCM
•
Faulty 120Ω registor (Cluster)
•
Faulty PCM
•
Faulty ESP |
Enable Conditions |
•
IG ON | |
Threshold value |
•
No CAN message from ESP for more than 1 sec. | |
MIL ON Condition |
•
Lamp ON |
