Four-Wheel Drive (4WD) Control Module
WARNING: This page is about a different car, the 2005 Mazda Tribute. However, it is still accessible from the selected car via links, so may be relevant.
The 4WD control module is on the high speed CAN. The 4WD control module regulates the duty cycle to the active torque coupling between 2WD and 4WD when more traction is required. Check the high speed CAN circuits (W) and (B), between the 4WD control module 0318-01 and the DLC D-01. Total resistance values must not be more than 5 ohms. If the resistance is more than 5 ohms, there is an open circuit in the high speed CAN, damage to the DLC D-01, damage to the 4WD control module 0318-01, or a problem in the in-line connector. See FOUR-WHEEL DRIVE SYSTEMS .