Operation Manual

16. Electrical Equipment
16-9
Voltage Regulator Inspection
Remove the front fender. (4 screws)
Disconnect the 4P coupler on the diode, and
check the continuity between main wire terminals
according to following method.
Main wire circuit inspection
Item (wire color) Judgment
Check voltage between battery
terminal (red) and ground.
Battery voltage
Check continuity between
ground (green) and frame.
Continuity
Check illumination wire
(yellow) to ground.
(Disconnect the coupler of the
resistor’s pin and automatic
by-starter pin. Illumination
switch is in OFF)
Continuity &
resistance
Check charging coil (white) to
(ground)
Continuity &
resistance
If the measured value is abnormal, check the
abnormal wire circuit. If components are good, it
could be a poor wire circuit.
If all items are in good condition, then replace the
voltage regulator.
If main wire circuit check is in normal and there is
no loose in the pins of voltage regulator coupler,
then measure the resistance between the coupler
of voltage regulator.
Voltage Regulator Check Unit: KΩ
Multi-meter
(
+)
Multi-
meter (-)
White
(W)
Yellow
(Y)
Red
(R)
Green
(G)
White (W)
∞
4~7
∞
Yellow (Y)
∞
2.4~48
Red (R)
∞ ∞ ∞
Green (G)
∞
2.4~48
∞
If the resistance values are abnormal among the
pins, replace the voltage regulator.
Caution
● Do not touch the probe of multi-meter by
fingers, then the resistance values will be
incorrect because there is some resistance
existence in human body.
● To use the multi-meter recommended by
SYM. Otherwise, the measured resistance
might be different.
Green
Red
White
Yellow
REG. REC.
To this chapter contents