Pinpoint Test 1: Four Wheel Drive (4WD) System Functional Test
PINPOINT TEST 1: FOUR WHEEL DRIVE (4WD) SYSTEM FUNCTIONAL TESTNormal Operation
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. See FOUR WHEEL DRIVE (4WD) SYSTEMS INSPECTION AND VERIFICATION. Four Wheel Drive (4WD) Systems Inspection and Verification
The 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.
Possible Causes
^ 4WD system concern without on-demand or continuous DTCs present
Diagnostic Procedure
