Important: The following steps must be completed before using the symptom tables.
|        -  | The control modules can communicate via the serial data link. | 
 
|     •  | Review the system descriptions and operations in order to familiarize
yourself with the system functions. Refer to one of the following system operations: | 
 
Visual/Physical Inspection
|     •  | Inspect for aftermarket devices which could affect the operation of the
starting and charging systems. 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: