Transfer: ETX13B

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 transmits/receives data but selectively reads required data only.

DTC Logic

U1000:

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 "Diagnosis Procedure".
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 LAN-18, "Trouble Diagnosis Flow Chart". Diagnosis and Repair Workflow
NO >> INSPECTION END