DTC Description
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 error 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 independent). In CAN communication, control units are connected with 2 communication lines (CAN-High line, CAN-Low line), allowing a high rate of information transmission with less wiring. Each control unit communicates data but selectively reads required data only.
DTC DETECTION LOGIC
| DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detection condition | |
|---|---|---|---|
| U1000 | CAN COMM CIRCUIT (CAN communication circuit) | Diagnosis condition | When ignition switch ON. |
| Signal (terminal) | CAN communication signal | ||
| Threshold | CAN signal failure | ||
| Diagnosis delay time | 2 seconds or more | ||
POSSIBLE CAUSE
CAN communication error
FAIL-SAFE
Normal control