Actron Sunpro CP7673 - Alternator;Generator Ground Test

8. ALTERNATOR/GENERATOR GROUND TEST
PRELIMINARY CONNECTIONS | M r
RED CLIP TO BATTERY (+) x = REM
A. Turn the test selector to the RPM position and put the range switch in the
HIGH position. i
B. Connect the RED test clip to the positive (+) battery terminal and the BLACK
test clip to the negative (—) battery terminal. Clip the inductive pickup over a
spark plug wire.
C. With all accessories on, start the engine, and adjust the speed to 1500 to
2000 RPM on the HIGH RPM scale.
D. Disconnect the RED test clip from the battery and connect it to the frame of
the alternator/generator.
E. Turn the test selector to the VOLTS position and put the range switch in the
LOW position.
F. Observe the LOW VOLTS scale.
RESULTS: VOLTAGE READS MORE THAN 0.2 VOLTS — Loose or poorly
grounded alternator/generator.
VOLTAGE READS LESS THAN 0.2 VOLTS — Alternator/generator
properly grounded.
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