Electronic Control Module
WARNING: This page is about a different car, the 2003 Mazda B4000, 2002 Mazda B4000, 2002 Mazda B3000, 2001 Mazda B4000, and 2001 Mazda B3000. However, it is still accessible from the selected car via links, so may be relevant.
The electronic control module controls the operation of the transfer case in response to the inputs from the brake switch, the DTR sensor, the clutch interlock switch, and the motor assembly through the actuation of the rotary control switch. The transfer case shift motor is controlled by the 4WD control module to shift the transfer case between 4WD HIGH, 4WD LOW and 2WD modes.