BOMBARDIER SEA-DOO GTX RFI 5666 1998 Manual page 37

CHARGING SYSTEM
GENERAL
Magneto
The purpose of the charging system is to keep the
battery at a full state of charge.
The magneto is the primary source of electrical
energy. It transforms magnetic field into electric
current (AC).
The magneto has a 3 phase, delta wound stator
on 18 poles. Capacity is 270 watts.
Rectifier/Regulator
The unit used is a 3 phase in series rectifier/regulator.
It transforms the alternating current (AC) from the
magneto into direct current (DC) to allow battery
charging.
Included in the same unit, a regulator keeps volt-
age at a steady level of 14.2 volts to prevent any
damage to components.
1
F07H08A
1. Rectifier/regulator
Battery
The battery is the DC source for the electric start-
er, the Multi-Purpose Electronic Module (MPEM),
the Electronic Control Unit (ECU) and all accesso-
ries.
Fuse
The charging system is protected by 2 fuses.
A 15 A fuse is mounted on the MPEM and a 20 A
fuse is located in the rear electrical box.
Section 05 ELECTRICAL SYSTEM
Subsection 03 (CHARGING SYSTEM)
TESTING PROCEDURE
NOTE: First, ensure that battery is in good condi-
tion prior to performing the following tests.
Rectifier/Regulator
STATIC TEST: CONTINUITY
1. Due to internal circuitry, there is no static test
available.
DYNAMIC TEST
Voltage Test
Proceed as follows:
– Start engine.
– Connect a multimeter to battery posts. Set mul-
timeter to Vdc scale.
– Bring engine to approximately 5500 RPM.
If multimeter reads over 15 volts, regulator is de-
fective. Replace it.
NOTE: If it is continually necessary to add distilled
water to the battery, this indicates an over voltage
situation, requiring replacement of the rectifier/
regulator. If, on the other hand, the battery will not
stay charged, the problem can be any of the
charging circuit components. If these all check
good, you would be accurate in assuming the
problem to be in the rectifier/regulator.
If there is no charging at the battery with the pre-
ceding voltage test, check the output of the mag-
neto.
Magneto
STATIC TEST: CONTINUITY
1. Disconnect the magneto wiring harness con-
nector.
2. Install the 4-pin magneto harness adapter (P/N
295 000 131).
3. Check resistance between the YELLOW/BLACK
and the BLACK wires of the 4-pin magneto har-
ness adpater. The resistance should be between
0.1 to 1.0 ohm.
4. Place either meter lead into the RED/BLACK
wire and note the resistance (same as step no. 3).
If the readings are out of specification, the stator
will need to be replaced.
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05-03-1