2002-2003 Bombardier Baja DS650 Service Manual, Page 133Get this manual
Section 05 ELECTRICAL Subsection 03 (CHARGING SYSTEM)
CHARGING SYSTEM
TESTING PROCEDURE
NOTE: First, ensure that battery is in good condition prior to performing the following test using current inductive ammeter such as Snap-on MT 110If the battery is regularly discharged, check main (25 amp) fuse conditionThe voltage regulatorrectifier could be the culprit of blown fuseTo check, simply disconnect the voltage regulatorrectifier from the circuitIf the fuse still burns, check for defective wireCAUTION: Do not use higher rated fuse as this can cause severe damageIf multimeter reads over 15 volts, voltage regulator rectifier is defectiveReplace itNOTE: Whatever the voltmeter type used (peak voltage or RMS), the voltage must not exceed 15 VA faulty voltage regulatorrectifier will allow voltage to exceed 15 as engine speed is increasedNOTE: If the battery will not stay charged, the problem can be any of the charging circuit componentsIf these all check good, you would be accurate in assuming the problem to be in the voltage regulatorrectifierIf there is no charging at the battery with the preceding voltage test, the following test can also be performedNOTE: If the voltage regulatorrectifier is within the specification, the wiring harness between the voltage regulatorrectifier and battery is defectiveIf the voltage regulatorrectifier is out of specification and the stator test good, the voltage regulator rectifier is defective