DTC Description
CAN (Controller Area Network) is a serial communication line for real-time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent malfunction detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independently). In CAN communication, control units are connected with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.
DTC DETECTION LOGIC
| DTC | CONSULT screen terms(Trouble diagnosis content) | DTC detection condition | |
| U1000 | CAN COMM CIRCUIT(CAN Communication Line) | Diagnosis condition | When the ignition switch is ON |
| Signal | CAN communication signal | ||
| Threshold | TCM cannot send the CAN communication signal | ||
| Diagnosis delay time | Continuously for 2 seconds or more | ||
POSSIBLE CAUSE
Harness or connector (CAN communication line is open or shorted)
FAIL-SAFE
Not changed from normal driving