Strategy Based Diagnostics
Review the system operations in order to familiarize yourself with the system
functions. Refer to
Front Drive Axle Description and Operation
, and
Wheel Drive Shafts Description and Operation
in Wheel Drive Shafts. All diagnosis on a vehicle should follow a logical
process. Strategy based diagnostics is a uniform approach for repairing all systems.
The diagnostic flow may always be used in order to resolve a system problem. The diagnostic
flow is the place to start when repairs are necessary. For a detailed explanation,
refer to
Strategy Based Diagnosis
in General
Information.
Visual/Physical Inspection
| • | Inspect the easily accessible or visible system components for obvious
damage or conditions, which could cause the symptom. |
| • | Inspect for the correct lubricant level and the proper viscosity. |
| • | Verify the exact operating conditions under which the concern exists.
Note factors such as vehicle speed, road conditions, ambient temperature, and other
specifics. |
| • | Compare the driving characteristics or sounds, if applicable, to a known
good vehicle and ensure you are not trying to correct a normal condition. |
Intermittent
Test the vehicle under the same conditions that the customer reported in order
to verify the system is operating properly.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to
diagnose the symptom:
