• Result of the start voltage test
Result Results displayed Analysis
High starting voltage when the test is
performed with the engine at idle
ALT. IDLE VOLTS
xx.xx V HIGH
Check that the connections are good. If every-
thing is properly connected, replace the regulator.
Normal starting voltage when the test
is performed with the engine at idle
ALT. IDLE VOLTS
xx.xx V NORMAL
No problem detected. Normal operation of the
alternator.
Low starting voltage when the test is
performed with the engine at idle
ALT. IDLE VOLTS
xx.xx V LOW
The alternator does not provide enough power
to the battery. Check the belts, and ensure that
the alternator is running when the engine is
on. If the belts slip or are broken, replace them
and re-test. Check the connection between the
alternator and the battery. If the connection is
bad, clean or replace the cable and re-test. If
the alternator belts and connection are in good
condition, replace the alternator.
5. The tester will prompt to «TURN ON CONSUMERS AND PRESS ENTER». Turn on the heater to maximum (heat), full
beam lights and rear headlights. Do not switch on cyclic loads such as air conditioning or windscreen wipers.
6. When the test is done, run the engine at 2500 rpm for 15 seconds.
7. Press «ENTER», the undulation of the charging system is visible. One of the three test results is displayed:
Result
Results displayed
Analysis
Normal undulation detected
RIPPLE DETECTED
xx.xx V NORMAL
The diodes are working in the alternator/starter
No undulation detected
NO RIPPLE DETECT
PRESSEZ ENTER
No undulation detected Alternator malfunction.
Replace it.
High undulation intensity
RIPPLE DETECTED
xx.xx V HIGH
One or more diodes are not working or are da-
maged. Make sure that the alternator support is
properly positioned and that the timing belts are
working properly. If so, replace the alternator.
8. Press «ENTER» to continue the charging system test with the consumers running (lights, heating ...).
• Charging system test result with consumers running
Examples Results displayed Analysis
High starting voltage when the test is
carried out with consumers in operation
ALT. LOAD VOLTS
xx.xx V HIGH
The alternator output voltage is abnormally high.
Check that there are no connection problems. If
not, replace the alternator.
Normal starting voltage when the test
is performed with the consumers in
operation
ALT. LOAD VOLTS
xx.xx V NORMAL
The alternator output voltage is normal. No
problems are detected.
Low starting voltage when the test
is performed with the consumers in
operation
ALT. LOAD VOLTS
xx.xx V LOW
The alternator does not provide enough current
for charging the electrical system and the battery.
Check the alternator belts, and make sure the
alternator is running when the engine is running.
If the timing belts slip or are broken, replace the
timing belts and re-test. Check the connection
between the alternator and the battery. If the
connection is bad, clean or replace the cable and
re-test. If the belts and connection are in good
condition, replace the alternator.
9. Press «ENTER» when the system test is complete. Turn o all consumers (heating, lights, etc.). Press «ENTER» to
obtain the test results. Use the buttons to read the complete results.
10
BATTERY TESTER DBT 350
EN
Translation of the original instructions
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