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5.4.7. If the cranking voltage is normal, press eNTeR to begin charging system test.
5.4.8. Press the eNTeR key, you will view the following screen.
5.4.9. Press the eNTeR key, one of the three following results will be displayed along with the actual reading
measured.
LOW CHARGING VOLTS WHEN TESTED AT IDLE: The alternator is not providing sufficient current to
the battery. Check the belt to ensure the alternator is rotating with engine running. If the belt is slipping or
broken, replace 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 belt and connections are in good
condition, replace the alternator.
CHARGING SYSTEM NORMAL WHEN TESTED AT IDLE: The system is showing normal output from
the alternator. No problem is detected.
HIGH CHARGING VOLTS WHEN TESTED AT IDLE: The voltage output from the alternator to the battery
exceeds the normal limits of a functioning regulator. Check to ensure there are no loose connections and
the ground connection is good. If there are no connection problems, replace the regulator. Since most
alternators have the regulator built-in, this will require you to replace the alternator. The normal limit of a
typical automotive regulator is 14.6 volts. Check manufacturer's specifications for the correct limit, as it will
vary by vehicle type and manufacturer.
5.4.10. Following the charging system at idle, press eNTeR for the charging system with accessory loads. Turn
on the blower to high (heat), high beam headlights, and rear defogger. DO NOT use cyclical loads such as
air conditioning or windshield wipers.
5.4.11. When testing older model diesel engines, run the engine to 2500 rpm for 15 seconds.
5.4.12. Press eNTeR to look for the amount of ripple from the charging system to the battery. one of two testing
results will be displayed along with the actual testing measured.
5.4.13. RIPPLE DETECTED NORMAL: Diodes function well in the alternator/stator.
5.4.14. EXCESS RIPPLE DETECTED: one or more diodes in the alternator are not functioning or there is stator
damage. Check to ensure the alternator mounting is sturdy and that the belt is in good shape and
functioning properly. If the mounting and belt are good, replace the alternator.
5.4.15. Press the "eNTeR" key to continue the charging system test with accessory loads. one of the following
three results will be displayed along with the actual test measured.
CHARGING SYSTEM HIGH WHEN TESTED WITH ACCESSORY LOADS: The voltage output from the
alternator to the battery exceeds the normal limits of a functioning regulator. Check to ensure there are no
loose connections and that the ground connection is normal. If there are no connection issues, replace the
regulator. Since most alternators have the regulator built-in, this will require you to replace the alternator.
CHARGING SYSTEM LOW WHEN TESTED WITH ACCESSORY LOADS: The alternator is not providing
sufficient current for the system's electrical loads and the charging current for the battery. Check the belt to
ensure the alternator is rotating with the engine running. If the belt is slipping or broken, replace 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.
CHARGING SYSTEM NORMAL WHEN TESTED WITH ACCESSORY LOADS: The system is showing
normal output from the alternator. No problem detected.
5.4.16. Press eNTeR when charging system test is completed. Turn all accessory loads and engine off. Press
eNTeR to return to step 1 or remove the test clamps from the battery posts after completion of testing to
end test.
NOTE! A 24V SYSTEM TEST result can be printed when connected to a 12V battery. Refer to the
following-:
24V SYSTEM TEST PRINTING: The printer will not function on a 24 Volt battery system. The test results on
a 24V system will be recorded until you connect to a 12 Volt battery and correct screen displays. Select
"YeS" and press the 'eNTeR' key to print the result; then disconnect the crocodile clips. The screen will
appear again after you reconnect the crocodile clips.
Select "No" and press the 'eNTeR' key to go back to the main menu.
© Jack Sealey Limited
Original Language Version
PRINT 24V SYSTeM
ReSuLT? YeS
BT2003.V5 Issue: 1 - 28/11/14
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