ELECTRIC SYSTEM
F
4
CHECKING THE VOLTAGE REGULATOR
A defective voltage regulator (1) can have the following
effect:
– No voltage in the circuit In this case, disconnect the
voltage regulator with the engine at idle speed. If the
consumers run, the voltage regulator is defective.
If there is still no voltage, the error must be in the
switch, the wiring harness or in the ignition system.
– Excessive voltage in the circuit
Bulbs burn out. In this case the voltage regulator
needs to be replaced.
DYNAMIC GENERATOR VALUES - KOKUSAN
4K-3B
Measuring conditions:
–All plugs and the ground connection are in a non-
corroding condition, plugs are tightly connected
– The battery is in a startable condition, not fully
charged (start several times if the battery is fully
charged)
–Start the engine; the measurement must be taken right
after starting
Controller output – measure the voltage with the
measuring tips of the peak voltage adapter directly on
the poles of the vehicle battery:
– Unstressed (no electric consumer switched on), engine
running at idle speed (1400 +/- 50 rpm)
Multimeter reading: 13 volts +/- 0.5 volt
– Stressed (light switched on, horn and brake actuated),
engine running at idle speed
Multimeter reading: 13 volts +/- 0.5 volt
– Stressed (light switched on, horn and brake actuated),
engine running at increasing speed (- 8000 rpm)
Multimeter reading: 13 volts +/- 0.5 volt
NOTE: the black measuring tip on the peak
voltage adapter should be applied to the
ground (negative pole).
Check the charge current – remove the main fuse, apply
the multimeter measuring tips (without the peak voltage
adapter) to both plugs on the fuse carrier (2) and
measure the current (set the multimeter DCA to 10
amperes):
– Unstressed (no electric consumer switched on), engine
running at idle speed
Multimeter reading: 1.5 amperes +/- 0.2 ampere
– Stressed (horn actuated), engine running at idle speed
Multimeter reading: -1.0 ampere +/- 0.2 ampere
– Stressed (horn actuated), engine running at increasing
speed
Multimeter reading: 0.8 ampere +/- 0.2 ampere
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