An AWD vehicle must be tested on a special four wheel chassis dynamometer.
An AWD vehicle should not be tested on a 2WD roll tester. If a 2WD roll tester must be used, perform the following procedure:
1.Check the tire pressures recommended for your vehicle.
2.Place the rear wheels on the roll tester for a speedometer test as shown in the illustration.
3.Release the parking brake.
4.Place the front wheels on the temporary free roller as shown in the illustration.
WARNING
Keep away from the front of the vehicle while the vehicle is in gear on the dynamometer. The vehicle can jump forward and cause serious injury or death.