Test D: Four Wheel Drive (4WD) Control Module Received No/invalid Data from ABS Module

Pinpoint Test D: Four Wheel Drive (4WD) Control Module Received No/invalid Data from ABS Module
Refer to Vehicle/Diagrams, Four-Wheel Drive System for schematic and connector information.

Normal Operation
The on-demand four wheel drive (4WD) system uses data from other systems as inputs to the 4WD control module. The 4WD control module uses the inputs to determine the appropriate pulse-width modulated (PWM) command duty cycle to send to the active torque coupling that delivers the desired torque to the rear wheels. Specific inputs to the 4WD control module are: throttle position output from the PCM, transmission range from the PCM, brake system status and all 4 wheel speeds from the ABS module. Communication between the 4WD control module and other modules is obtained through the high-speed controller area network (HS-CAN). If the 4WD control module loses communication with, or receives invalid data from any of the necessary modules, DTCs are set and the 4WD control module may not allow 4WD operation.
^ DTC U0415 Invalid Data Received from ABS When the 4WD control module receives invalid HS-CAN bus messaged wheel speed(s) from the ABS module for more than 30 seconds from the PCM, this DTC is set.

This pinpoint is intended to diagnose the following:
^ ABS module

D1-D2: