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.PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.DTC REPRODUCTION PROCEDURE

With CONSULT-III

1. Turn the ignition switch OFF to ON.

2. Perform self-diagnosis for “ALL MODE AWD/4WD”.

Is DTC “U1010” detected? YES >> Proceed to diagnosis procedure. Refer to DLN-77, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

1.CHECK 4WD CONTROL MODULE

Check 4WD control module harness connector for disconnection and deformation.

Is the inspection result normal? YES >> Replace 4WD control module. Refer to DLN-91, "Removal and Installation".

NO >> Repair or replace error-detected parts.