ELECTRICAL SYSTEM
12-3
1.2.3 Inspecting regulated voltage
(1) Disconnect the battery (+) terminal, and connect an
ammeter.
(2) Connect a volt meter to terminal L ground line.
(3) Make sure that the volt meter indicates 0 when the
starter switch is OFF position.
Make sure that the volt meter indicates much lower
voltage than battery voltage when the starter switch is
ON position.
(4) Disconnect the terminal of ammeter, and start the
engine.
(5) Measure the adjusting voltage with volt meter.
Inspecting regulated voltage
1.2.4 Inspecting output
(1) Disconnect the battery ground cable.
(2) Connect B terminal of the alternator to the ammeter,
then connect the voltmeter between B terminal and
ground.
(3) Connect the battery ground cable.
(4) Start the engine.
(5) Immediately apply all loads such as lamps.
(6) Increase the engine speed and measure the maximum
output current at the specified alternator rotation speed
with the voltmeter indicated the specified value.
(7) If the measured value meets the standard, the output is
normal.
Inspecting output
12V
L
R
A
V
Switch
Ammeter
Voltmeter
Battery
Item Spec Standard Condition
Regulated voltage (at 20°C [68°F]) 12 V - 50 A 14.4 to 15.0 V
5000 min
-1
, 5A or lower, 20°C [68°F]
L
R
B
A
V
Charge
lamp
Switch
Ammeter
Battery
Voltmeter
Item Spec
Standard
Terminal voltage/current Alternator rotation speed
Output characteristics
(when hot)
12V - 50A
13.5V / 33A or higher
2500 min
-1
13.5V / 47A or higher
5000 min
-1
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