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CHARGING SYSTEM TEST
The charging system consists of 1. the battery or battery bank, 2. the
cables from the battery to the alternator and 3. the alternator. The
proper sequence for testing the charging system is to begin with the
battery or battery bank and then once the battery or battery bank is
confirmed to be good and charged then the cables should be tested and
finally after the cables have been confirmed to be good the alternator
should be tested. If this sequence is not followed or if the alternator is
tested with batteries that are low or bad or if the cables are weak the
alternator could be misdiagnosed.
The previous sections explain the battery and battery bank tests and
the next couple of sections explain the charging cable test and the
alternator test.
.
--MAIN MENU--
BATTERY BANK TEST
VDROP MENU
ALTERNATOR TEST
STARTER DRAW TEST
REVIEW/PRINT
MULTIMETERS
>J1708 DATA
--J1708 DATA--
>ATTACH J1708 DATA
CABLE.
'N' TO CANCEL
--J1708 DATA--
>TURN IGNITION KEY
TO RUN.
'N' TO CANCEL
Attach the Optional J1708 Data Cable.
If the cable is not correctly attached
the test will not continue. Check
the connection at the tester and the
vehicle.
--J1708 DATA--
VIN: 123456789A
BATTERY 12.65V.
OIL TEMP 68F
--J1708 DATA--
ERROR:
J1708 NOT READING.
Turn on ignition key to run transfer
of data.
The vehicles data will appear. Much
of the information accessed, such as
the oil temperature will be used in the
calculation of the test results. Press
(Y Enter).
J1708 DATA
Select J1708 Data from
the main menu. You will need
to press (-Down) to scroll to the
selection. The arrows to the right
indicate directions they can be
scrolled. Press (Y Enter) to make
the selection.
If ERROR appears the connections
has not been established.
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