U1000, U1002 CAN COMM CIRCUIT
VDC/TCS/ABS
U1000 U1002
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 detectability. 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-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 Logic
DTC DETECTION LOGIC|
DTC |
Display item |
Malfunction detected condition |
Possible cause |
|
U1000 |
CAN COMM CIRCUIT |
When ABS actuator and electric unit (control unit) is not transmitting or receiving CAN communication signal for 2 seconds or more. |
|
|
U1002 |
SYSTEM COMM |
When ABS actuator and electric unit (control unit) is not transmitting or receiving CAN communication signal for 2 seconds or less. |
DTC CONFIRMATION PROCEDURE
1.DTC REPRODUCTION PROCEDURE