Transfer Case

U1010 Control Unit (CAN)

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 SDT
1 Turn the ignition switch ON.
2 Perform transfer control unit DTC check. Refer to [SDT Function (4WD)] Scan Tool Testing and Procedures.

Is DTC U1010 detected?
YES
Proceed to diagnosis procedure. Refer to "Diagnosis Procedure".
NO
Inspection End.

Diagnosis Procedure

1. CHECK TRANSFER CONTROL UNIT CONNECTOR

Check transfer control unit connectors for disconnection and deformation.

Is the inspection result normal?
YES
Replace transfer control unit. Refer to [Transfer Control Unit: Removal and Installation] Service and Repair.
NO
Repair or replace parts as necessary.