DTC Description
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Modern vehicle is equipped with many electronic control unit, 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 transmits/receives data but selectively reads required data only. CAN Communication Signal Chart. Refer to CAN System Specification Chart .
DTC DETECTION LOGIC
| DTC No. | CONSULT screen items (Trouble diagnosis content) | DTC detecting condition | |
|---|---|---|---|
| U1000-01 | CAN COMM CIRCUIT(CAN communication circuit) | Diagnosis condition | All times |
| Signal (terminal) | CAN communication | ||
| Threshold | When automatic back door control module cannot communicate CAN communication signal | ||
| Diagnosis delay time | 2 seconds | ||
POSSIBLE CAUSE
CAN communication system
FAIL-SAFE
Inhibit automatic back door system all function