Initial Inspection and Diagnostic Overview

GENERAL TESTING INFORMATION
These diagnosis charts are designed to take technician through a step-by-step diagnosis procedure to determine the cause of a condition. It may not always be necessary to follow the chart to its conclusion. Perform only the steps necessary to correct the condition. Then check the operation of the system to ensure the cause has been found.

REMOVING COMPONENTS FOR TESTING
It is sometimes necessary to remove various components of vehicle to gain access to the component to be tested. Refer to applicable Systems for the removal and installation of components. After you have verified that the condition has been corrected, ensure all components removed have been installed.

TESTING PRECAUTIONS
When performing the High-Speed Shake Diagnosis, or Engine Accessory Vibration Diagnosis, observe the following precautions:

CAUTION: The suspension should not be allowed to hang tree. When the constant velocity joint is run at a very high angle, extra vibrations as well as damage to seals and joints can occur.

Supporting The Weight Of The Vehicle With Floor Jacks.:

The lower control arm should be supported as far outboard as possible. To bring the vehicle to its proper ride height, the full weight of the vehicle should be supported in front by floor jacks, as shown.

WARNING: If only one drive wheel is allowed to rotate, speed must be limited to 55 km/h (35 mph) indicated on the speedometer since actual wheel speed will be twice that indicated on the speedometer. Speed exceeding 55 km/h (35 mph) or allowing the drive wheel to hang unsupported could result in tire disintegration, differential failure and/or constant velocity joint and halfshaft failure, which could cause serious personal injury and extensive vehicle damage.