9.Electrical Systems
Downtown 350i
Charging System
SAFETY FIRST: Protective gloves and eyewear are recommended at this
point.
You will need a digital multimeter to inspect the charging system.
To replace the stator/charging coil see the
A.C. Generator and Starter
clutch
topic.
Charging Voltage Inspection
Remove the battery cover. See the
Battery
topic for more information.
Note: The battery should be fully charged prior to making charging system
checks.
Start the engine and warm it up to the operating temperature; stop the engine.
Connect the multimeter between the positive (+) and negative (-) terminals of the
battery. To prevent short, make absolutely certain which are the positive (+) and
negative (-) terminals or cable.
With the headlight on and turned to the high beam position, restart the engine.
Measure the voltage on the multimeter when the engine runs at 5000 rpm.
Battery charging voltage@ 5000 rpm
14 ~ 15V
9-19