Strategy Based Diagnostics
- Perform the
Diagnostic System Check - Vehicle , before using the symptom tables,
if applicable.
- Review the system operations in order to familiarize yourself with the
system functions. Refer to
Disassembled Views and
Engine Component Description
and
Lubrication Description and
Drive Belt System Description.
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 condition. 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 may cause the symptom. |
| • | Check for the correct oil level, correct oil viscosity, and correct oil
filter. |
| • | Verify the exact operating conditions under which the concern exists.
Note factors such as engine RPM, ambient temperature, engine temperature, amount of
engine warm-up time, and other specifics. |
| • | Compare the engine sounds, if applicable, to a known good engine 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 correctly.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order to
diagnose the symptom:
