Midtronics JDT-1 WM, Руководство пользователя

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Midtronics Inc. 7000 Monroe Street Willowbrook, IL 60527 www.midtronics.com
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Appendix B:Test Results Decision Tables JDT-1
Starter Test Results
Decision Action
Cranking
Normal
The starter voltage is normal and the battery is fully charged.
Low Voltage
The starter voltage is low and the battery is fully charged.
Charge Battery
The starter voltage is low and the battery is discharged. Fully
charge the battery and repeat the starter system test.
Replace Battery
(If the battery test result was (REPLACE or BAD CELL.) The
battery must be replaced before testing the starter.
Low Current
The starter voltage is high but the cranking amps are low.
No Start
The engine didn’t start and the test was aborted or the
vehicle’s starting profile was not detected and the Starter
Test was skipped.
Alternator Test Results
Decision Action
CHARGING
NORMAL
The output from the alternator is normal.
NO OUTPUT
No output detected. Check belts to ensure alternator is
rotating when engine is running.
√ Check all alternator connections including to the
battery. Clean or replace if necessary and retest.
√ If the belts and connections are in good working
condition, replace alternator or external voltage
regulator.
LOW OUTPUT
Alternator not providing enough current to power electrical
loads and charge the battery.
√ Check belts to ensure the alternator is rotating with the
engine running.
√ Check alternator connections to and from the battery.
If loose or heavily corroded, clean or replace the cable
and retest.
HIGH OUTPUT
Alternator voltage to the battery exceeds normal limits of a
functioning regulator.
√ Check for loose and normal ground connections. If no
connection problems are found, replace the regulator.
The normal high limit of a typical automotive regulator is 14.5
volts +/–0.5. Refer to the manufacturer specifications for the
correct limit, which may vary by vehicle type.
Diode Test Results
Decision Action
EXCESSIVE
RIPPLE
One or more diodes in the alternator are not functioning or
there is stator damage, which is shown by an excessive
amount of AC ripple current supplied to the battery.
√ Make sure the alternator mounting is sturdy and that
the belts are in good shape and functioning properly.
If the mounting and belts are good, replace the
alternator.
OPEN PHASE
Replace the alternator.
OPEN DIODE
SHORTED
DIODE