Test I: Vehicle Binds In A Turn or Resists Turning

Pinpoint Test I- Vehicle Binds In A Turn Or Resists Turning

Normal Operation
The vehicle is equipped with an on-demand 4WD system that is always active and requires no driver input. The system has no mode select switch. The system combines transparent all-surface operation with highly capable 4-wheel drive, and is capable of handling all road conditions, including street and highway driving as well as off-road and winter operation.

The 4WD system continuously monitors vehicle conditions and automatically adjusts the torque distribution between the front and rear wheels. During normal operation, most of the torque is sent to the front wheels. If wheel slip between the front and rear wheels is detected, or if the vehicle is under heavy acceleration, the 4WD system will increase the torque to the rear wheels to prevent or control wheel slip.

The 4WD control module varies the torque sent to the rear wheels, by sending a duty cycle to the active torque coupling located inside the rear axle. The 4WD control module also provides the brake system with its current clutch duty cycle and whether or not the brake system may take command of the clutch duty cycle.

I1-I2:

I2-I5:

NOTE: Conduct Steps 1 through 7 outlined in Inspection and Verification prior to performing this test.

Possible Causes
^ Rear axle
^ Wheels/tires
^ PCM
^ ABS module
^ 4WD control module
^ Circuitry