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:
