3 Series E46 325Ci (M54) COUPE
12 31 009
Checking alternator and regulator switch
Test requirements:
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Correct connections on charged battery
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Correct connections on alternator and starter motor
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Good ground connection between engine and body
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Tightened drive belt
Connect DIS Tester.
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Measurement
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Checking alternator
If charge indicator lamp is permanently lit:
Remove voltage regulator and check carbon brushes, replace if
necessary.
Replace alternator regulator switch.
Note:
Minimum length of carbon brushes "A" = 5 mm.
If charge indicator lamp goes out while engine is running:
Check control voltage.
Regulator switch must be replaced if control voltage is not
achieved.
Replace alternator regulator switch.
RA Checking alternator and regulator switch
BMW AG - TIS
17.02.2013 14:25
Issue status (12/2007) Valid only until next DVD is issued
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