Test G: Vehicle Binds In A Turn or Resists Turning/Pulsates or Shudders In A Straight Line

Test G: Vehicle Binds In a Turn or Resists Turning/Pulsates or Shudders in a Straight Line
Refer to Vehicle/Diagrams, All Wheel Drive (AWD) Systems for schematic and connector information.

Normal Operation
The vehicle is equipped with an on-demand four wheel drive (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 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.

Possible Causes
- Rear axle
- Wheels/tires
- Powertrain control module (PCM)
- Anti-lock brake system (ABS) module
- 4WD control module
- Circuitry

NOTE: Conduct Steps 1 through 10 outlined in Inspection and Verification prior to carrying out this test. Inspection and Verification

G1-G4:

G5: