Normal Operation

The 4WD control module communicates with the WDS or equivalent tester through the international standards organization (ISO) 9141 communication network circuit (LB/W). If circuit (LB/W) becomes open or shorted to ground communications to that module are not possible. Check circuit (LB/W) between the 4WD control module 0318-02 and the data link connector (DLC) D-01. The total resistance value must not be more than 5 ohms. If the resistance is more than 5 ohms, there is an open in circuit (LB/W), damage to the DLC D-01, or damage to the 4WD control module 0318-02.