Charging System Test Procedure

Press ENTER to begin charging system test.

Fig 1: Displaying PRESS ENTER FOR CHARGING TEST
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If ENTER button is pressed, the tester displays the actual voltage of alternator.
Press ENTER to test the charging system.

Fig 2: Displaying ALT VOLTS : 13.94V ENTER TO CONT...
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Turn off all electrical load and rev engine for 5 seconds with pressing the accelerator pedal.

Fig 3: Displaying LOADS OFF REV ENGINE 5 SEC
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Press ENTER.

Fig 4: Displaying LOADS OFF REV ENGINE 5 SEC
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The MICRO 570 analyzer charging system output at idle for comparison to other readings.

Fig 5: Displaying ***TESTING*** ENGINE AT IDLE
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Take relevant action according to the test results by referring to the table below after shutting off the engine and disconnect the tester clamps from the battery.

Fig 6: Displaying DIODE RIPPLE NORMAL
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CHARGING SYSTEM TEST RESULTS

CHARGING SYSTEM TEST RESULTS CHART

RESULT ON PRINTER	REMEDY
Charging system normal/Diode ripple normal	Charging system is normal
No charging voltage	Generator does not supply charging current to battery Check belts, connection between generator and battery Replace belts or cable or generator as necessary
Low charging voltage	Generator does not supply charging current to battery and electrical load to system fully Check belts and generator and replace as necessary
High charging voltage	The voltage from generator to battery is higher than normal limit during voltage regulating. Check connection and ground and replace regulator as necessary Check electrolyte level in the battery
Excess ripple detected	One or more diodes in the generator is not functioning properly Check generator mounting and belts and replace as necessary