DLN

U1000 CAN COMM CIRCUIT





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-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit communicate data but selectively reads required data only.




DTC Logic

DTC DETECTION LOGIC






DTC CONFIRMATION PROCEDURE
1.DTC REPRODUCTION PROCEDURE
With CONSULT-III
1. Turn the ignition switch OFF to ON.
2. Perform AWD control unit self-diagnosis.
Is DTC "U1000" detected?
YES - Proceed to diagnosis procedure. Refer to CAN COMM Circuit.
NO - INSPECTION END




Diagnosis Procedure
1.PERFORM SELF-DIAGNOSIS
With CONSULT-III
Perform AWD control unit self-diagnosis.
Is DTC "U1000" detected?
YES - CAN specification chart. Refer to Trouble Diagnosis Flow Chart.
NO - INSPECTION END