DHC BT2410 Manual Del Propietário página 13

Since most alternators have the regulator built-in, this will require you to
replace the alternator.
CHARGING SYSTEM LOW WHEN LOAD ON TESTING
The alternator is not providing sufficient current for the system's electrical
loads and the charging current for the battery. Check the belts to ensure the
alternator is rotating with the engine running. If the belts are slipping or broken,
replace the belts and retest.
Check the connections from the alternator to the battery. If the connection is
loose or heavily corroded, clean or replace the cable and retest. If the belts
and connections are in good working condition, replace the alternator.
IR TEST (Internal Resistance Test)
1. Select IR TEST from the main menu.
2. Use the clamps to connect with the battery directly.
3. Measure the battery temperature by aiming the temperature sensor at the
battery.
4. Once the IR test is completed, the tester will display the voltage & internal
resistance value on the result page.
5. Select DONE to return to main menu or select PRINT to print out the IR test
result.
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