Mitsubishi L3E Service Manual page 136

ALTERNATOR AND DYNAMO
Figure 147 Lead outlet coupler
136 / 155
Blue lead
Red lead
Yellow lead
Green lead
Black lead
Blue lead
2. Inspecting the regulator alone
To judge if the regulator itself is acceptable or not,
check the regulator for normal continuity by
connecting the circuit tester to the lead wires as
follows:
Item
Tester (+)
Red
Red
Blue 1
Blue 2
Blue 1
Blue 2
Black
Black
Table 52 Inspection of the regulator
NOTE
For testing, use an ohmmeter as the circuit tester.
33.10.3 Installation
Heat tremendously affects the regulator and the
rectifier. Therefore it is necessary to install them in a
well-ventilated area. reassemble the regulator in the
proper direction by positioning the head of the outlet
leads downward.
ENGLISH
ELECTRICAL SYSTEM
Normal
measure
Tester (–) -ment
Blue 1
Blue 2
Continuity
Black
Black
Red
Red
Non-
continuity
Blue 1
Blue 2
Service Manual Mitsubishi L-Series diesel engines
If abnormal
– possible
cause of
regulator
trouble
Broken diode
Shorted diode
Shorted diode
or thyristor
Version 08/2004