Examples
Screen display
Analysis
Voltage lower than 9.6 Volt
LO
The starting voltage is not correct. The battery must be
replaced.
Voltage above 9.6 Volt
OK
The starting voltage is normal.
No waving
----
"The starting voltage is not detected. Check the connec
-
tions, cables and alternator.
Repeat the test."
1. If the starting voltage is normal, press to continue the test. The display shows «ALT. & XX.XX V»
2. Run the engine between 1200 and 1500 rpm.
3. One of the 3 results is displayed:
Result of the start voltage test
Examples
Results displayed
Analysis
High starting voltage when the test is
performed with the engine at idle
HI (= High)
Check that the connections are good. If every
-
thing is properly connected, replace the alterna
-
tor.
Normal starting voltage when the test
is performed with the engine at idle
OK
No problem detected. Normal operation of the
alternator.
Low starting voltage when the test is
performed with the engine at idle
LO (= LOW)
The alternator does not provide enough power to
the battery. Check the alternator belts, and make
sure the alternator is running when the engine is
running. 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.
•
Result of the load system test with consumables running
1. Turn on the heater to maximum (heat), headlights and taillights. Do not switch on cyclic loads such as air conditioning or
windshield wipers.
Examples
Results displayed
Analysis
High starting voltage whenthe test is
performed with the consumers running
HI (= High)
"The output voltage of the alternator 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 running"
OK
No problem detected. Normal operation of the
alternator.
"Low starting voltage when
the test is performed with the consu
-
mers running"
LO (= LOW)
The alternator does not provide enough current
for charging the electrical system and the battery.
Check the alternator belts, and make sure the alter
-
nator 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.
2. Press
to display the ripple intensity of the charging circuit. The display shows « RIPPLE & XX.XX V ».
Results found
Screen display
Analysis
Normal wave intensity
OK
The diodes work well in the alternator/starter
High wave intensity
HI
"One or more diodes do not
do not work or are
damaged. Make sure that the alternator
support is properly positioned and that the
belts are working properly. If so, replace the
alternator."
8
DBT 300
EN
Translation of the original instructions
