| • | Perform the
Diagnostic Starting Point
before using the Symptom Tables in order to verify that all of
the following are true: |
| - | The control module(s) can communicate via the serial data link. |
| • | Review the system operation in order to familiarize yourself with
the system functions. Refer to the following: |
Visual/Physical Inspection
| • | Inspect for aftermarket devices which could affect the operation
of the power windows, power door locks, or power mirrors. Refer to
Checking Aftermarket Accessories
in Wiring Systems. |
| • | Inspect the easily accessible or visible system components for
obvious damage or conditions which could cause the symptom. |
Intermittent
Faulty electrical connections or wiring may be the cause of intermittent
conditions. Refer to
Testing for Intermittent Conditions and Poor Connections
in Wiring Systems.
Symptom List
Refer to a symptom diagnostic procedure from the following list in order
to diagnose the symptom:
