DHC BT400, Owner'S Manual, Page: 11 / 90

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CHARGING SYSTEM LOW WHEN TEST
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 belts
to ensure the alternator is rotating with the
engine running. If the belts are slipping or
broken, replace the belts and retest.
ALT. LOAD VOLTS
xx.xx V LOW
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 TEST
WITH ACCESSORY LOADS
The system is showing normal output from the
alternator. No problem detected.
ALT. LOAD VOLTS
xx.xx V NORMAL
10. Press «ENTER» when charging system test is
completed. Turn all accessory loads and
engine off. Press «ENTER» to read the system
test results.
TEST OVER. TURN
OFF LOADS &
ENGINE
ALT. LOAD VOLTS
xx.xx V NORMAL
RIPPLE VOLTAGE
xx.xx V NORMAL
CRANKING VOLTAGE
xx.xx V NORMAL
ALT. IDLE VOLTS
xx.xx V NORMAL
IN-VEHIVLE TEST
This is a combination test of both battery test & system test. Please refer to
above testing procedures or follow the instructions on the display of the tester.
11
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