WEICHAI WD10 Service Manual - page 134
of
163
Service Manual for WD10 Diesel Engine
124
Turn on the machine power switch and connect test
lamp to generator B+ terminal and E (negative)
terminal.
Is the test lamp on?
It means there is no
voltage in B+ terminal,
the wire to battery
positive is in failure.
NO
Connect one end of test lamp to
generator D+ terminal instead of E
terminal.
YES
Start the engine
YES
Is the test lamp on?
Is the test lamp on?
Generator is fine
NO
Generator failure
YES
Circuit in generator D+
terminal is in failure
NO
Fig. 4-85 Generator fault diagnosis flow chart