Test A: Four Wheel Drive (4WD) System Functional Test

Pinpoint Test A: Four Wheel Drive (4WD) System Functional Test
Refer to Vehicle/Diagrams, Four-Wheel Drive System for schematic and connector information.

NOTE: This test must be carried out on a hard surface in a vacant area without traffic.

NOTE: Carry out Steps 1 through 7 outlined in Inspection and Verification before carrying out this pinpoint test. Inspection and Verification

Normal Operation
The four wheel drive (4WD) system continuously monitors vehicle conditions and automatically adjusts the torque distribution between the front and rear wheels. During normal operation, the torque is sent to the front wheels. If wheel slip between the front and rear wheels is detected or the vehicle is under heavy acceleration, the 4WD system increases torque to the rear wheels.

This pinpoint is intended to diagnose the following:
^ A 4WD system concern without on-demand or continuous DTCs present

A1-A6:

A7: