Charging System Test Procedure

Press ENTER to begin charging system test.

Fig 1: Micro 570 Analyzer Screen Display - 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: Micro 570 Analyzer Screen Display - Actual Voltage Of Alternator
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Turn off all electrical load and rev engine for 5 seconds with pressing the accelerator pedal.

Fig 3: Micro 570 Analyzer Screen Display - Loads Off / Rev Engine 5 Sec
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Press ENTER.

Fig 4: Micro 570 Analyzer Screen Display - 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: Micro 570 Analyzer Screen Display - Testing / Engine At Idle
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Take a 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: Micro 570 Analyzer Screen Display - 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	Alternator does not supply charging current to battery Check belts, connection between alternator and battery Replace belts or cable or alternator as necessary
Low charging voltage	Alternator does not supply charging current to battery and electrical load to system fully Check belts and alternator and replace as necessary
High charging voltage	The voltage from alternator 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 alternator is not functioning properly Check alternator mounting and belts and replace as necessary