Charging System

The following procedures may be used to diagnose the charging system if: 

• the check gauges lamp (if equipped) is illuminated with the engine running 
• the voltmeter (if equipped) does not register properly 
• an undercharged or overcharged battery condition occurs. 

Remember that an undercharged battery is often caused by: 

• accessories being left on with the engine not running 
• a faulty or improperly adjusted switch that allows a lamp to stay on. Refer to  IGNITION-OFF DRAW TEST   for more information.