Inspecting Regulated Voltage; Inspecting Output - Mitsubishi L Series Service Manual

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.
Regulated voltage (at 20°C)
[68°F]
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.
Output characteristics
(when hot)
Item
A007TA0171B
A 007TA8271A
Item
A007TA0171B
A007TA8271A
Alternator
Lamp
E
L
R
B
V
Checking regulated voltage
Standard
14.7±0.3 V
28.5±0.5 V
Alternator
Lamp
E
L
V
R
B
Inspecting regulated voltage
Standard
Terminal voltage/current
13.5 V/21 A or higher
13.5 V/37 A or higher
27.0 V/18 A or higher
27.0 V/22 A or higher
ELECTRICAL SYSTEM
Ammeter
A
Switch
Battery
Voltmeter
V-A
12-40
24-25
Ammeter
A
Switch
Battery
Alternator rotation speed
-1
2500 min
-1
5000 min
-1
2500 min
-1
5000 min
12-5