Test B: The Vehicle Does Not Shift Between All Wheel Drive (AWD) AUTO and AWD LOCKED Correctly

Pinpoint Test B: The Vehicle Does Not Shift Between All Wheel Drive (AWD) AUTO and AWD LOCKED Correctly
Refer to Vehicle/Diagrams, Four-Wheel Drive System for schematic and connector information.

Normal Operation
With the key in the ON position, the 4X4 control module receives the operator's choice of all wheel drive (AWD) selection from the message center. The 4X4 control module then controls the electric clutch. If the transfer case is not responding to the operator's intentions, systematically check all inputs and outputs to the 4X4 control module.





This pinpoint test is intended to diagnose the following:
^ 4X4 indicator
^ Transfer case
^ 4X4 control module
^ Wiring, terminals or connectors
^ Transfer case clutch
^ Ignition switch and/or circuitry
^ High-speed controller area network (HS-CAN)
^ Instrument cluster (IC)

B1-B5:

B6-B9:

B10-B13:

B14-B18:

B18-B21:

B21 (Continued)-B23: