Review the system operation in order to familiarize yourself with the system functions. Refer to Diagnostic Starting Point - Power Outlets .
Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections.
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom: