Strategy Based Diagnostics
Review the system operations in order to familiarize yourself with the system functions. Refer to
Rear Drive Axle Description and Operation and
Wheel Drive Shafts Description and Operation. 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
.
Visual/Physical Inspection
| • | Inspect the easily accessible or visible system components for obvious damage or conditions, which could cause the symptom. |
| • | Check 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 make sure 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:
