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After the Load Test is completed one of the following sample results will
appear.
Ready for service.
If the battery is marginal, it should
be replaced under adverse driving
conditions.
Replace Battery
Charge and place into service.
Battery did not have a sufficient
charge for a complete Load Test.
Charge and retest.
5
ALTERNATOR OVERVIEW
This test measures the output of the alternator under load conditions.
This information provides the basis for further charging system tests. It
also detects the presence of an open or shorted diode that causes an
output loss of several amps and can cause the failure of other diodes.
Symptomatic Check before Proceeding:
Battery should be in good condition and charged before testing the
Alternator.
Check warning light indications.
Check belt condition and tension.
Check all cables and connections.
Check the battery for corrosion and dirty terminals.
Does the battery have a low state of charge? (See section 2 and 3)
Make sure all electrical items are off.
Check for Alternator noise.
ALTERNATOR TEST
Use the (+Up and -Down) keys
to move cursor to the desired
test.
Start engine.
Allow the voltage to stabilize
until it stops rising. Press
(Y Enter)
Note:
Battery should be in good condition and charged before proceeding
with this test. Press (N Esc.) to return to main menu. Select
Alternator
Test
then press (Y Enter).
BATTERY TEST
STARTER TEST
>ALTERNATOR TEST
OTHER
>ALLOW VOLTAGE
TO STABILIZE
14.43V
‘Y’ TO CONTINUE.
START ENGINE.
‘N’ TO CANCEL
#32 12V BATTERY
GOOD BATTERY.
12.84V CHG 100%
EST CCA 600
#33 12V BATTERY
BAD BATTERY
12.45V CHG 75%
EST CCA 120
#34 12V BATTERY
GOOD NEEDS CHRG..
12.24V CHG 50%
EST CCA 600
#35 12V BATTERY
CHARGE AND RETEST
12.06V CHG 25%
EST CCA 320
#32 12V BATTERY
MARGINAL BATTERY.
12.84V CHG 100%
EST CCA 600