GYS 024175, Manual

Page: 8 / 32

Translation of the original instructions
Low starting vol -
tage when the test
is performed with
the engine at idle
LO (= LOW)
The alternator does not provi -
de enough power to the battery.
Check the alternator belts, and
make sure the alternator is run -
ning when the engine is running.
If the belts slip or are broken, re -
place 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 condi -
tion, 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 dis-
played
Analysis
High starting voltage
whenthe test is perfor -
med with the consu -
mers running
HI (= High)
"The output voltage of the alterna -
tor is abnormally high. Check that
there are no connection problems.
If not, replace the alternator."
"Normal starting vol -
tage 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 per -
formed 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 alternator is running
when the engine is running. If the
timing belts slip or are broken, re -
place 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 condi -
tion, 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 alter -
nator/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 proper -
ly. If so, replace the alternator."
8
DBT 300
EN