Forch BT-D 6-12 V Manual Del Usuario página 20

24V SYSTEM PRINTING
To print 24V system test result, user must save the test result first. The test result will be
recorded until you connect to 12V battery. The message to check printout will be displayed
after you reconnect to battery.
SYSTEM TEST
■ Press «ENTER» button, you will view the following screen:
■ Turn off all vehicle accessory loads such as light, air conditioning, radio, etc. before start-
ing the engine.
■ When the engine is started, one of the three results will be displayed along with the
actual reading measured.
CRANKING VOLTS NORMAL
The system is showing normal draw. Press «ENTER» to perform the charging system test.
CRANKING VOLTS LOW
The cranking voltage is below normal limits, troubleshoot the starter with manufacturers
recommended procedure.
CRANKING VOLTS NO DETECTED
The cranking voltage is not detected.
■
If the cranking voltage is normal, press «ENTER» to begin charging system test.
■
Press the «ENTER» key, you will view the following screen.
■
Press the «ENTER» key, one of the three results will be displayed along with the actual
reading measured.
LOW CHARGING VOLTS WHEN TEST AT IDLE
The alternator is not providing sufficient current to the battery.
Check the belts to ensure the alternator is rotating with engine running. If the belts are slip-
ping 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 condition, replace the alternator.
CHARGING SYSTEM NORMAL WHEN TEST AT IDLE
The system is showing normal output from the alternator. No problem is detected.
HIGH CHARGING VOLTS WHEN TEST AT IDLE
The voltage output from the alternator to the battery exceeds the normal limits of
a functioning regulator. Check to ensure there is no loose connection and the ground
connection is normal. If there is no connection issue, replace the regulator. Since most
alternators have the regulator built-in, this will require you to replace the alternator. The nor-
mal high limit of a typical automotive regulator is 14.7 volts +/- 0.05. Check manufacturer
specifications for the correct limit, as it will vary by vehicle type and manufacturer.
■
Following the charging system at idle, press «ENTER» for the charging system with ac-
cessory loads. Turn on the blower to high (heat), high beam headlights, and rear defog-
ger (If equipped). Do not use cyclical loads such as air conditioning or windshield wipers.