- 11 -
English
- GB.11-V1 -
Check the belts to ensure the alternator is rotating with
engine running. If the belts are slipping or broken,
replace the belts and retest. Check the connections
from the alternator to the battery. If the connection is
loose or heavily corroded, clean or replace the cable
and retest. If the belts and connections are in good
condition, replace the alternator.
CHARGING SYSTEM NORMAL WHEN TEST AT IDLE
The system is showing normal
output from the alternator. No
problem is detected.
HIGH CHARGING VOLTS WHEN TEST AT IDLE
The voltage output from the
alternator to the battery
exceeds the normal limits of a
functioning regulator. Check to ensure there is no loose
connection and the ground connection is normal. If
there is no connection issue, replace the regulator.
Since most alternators have the regulator built-in, this
will require you to replace the alternator. The normal
high limit of a typical automotive regulator is 14.7 volts
+/- 0.05. Check manufacturer specifications for the
correct limit, as it will vary by vehicle type and
manufacturer.
7.
Following the charging system
at idle, press «ENTER» for the
charging system with
accessory loads. Turn on the blower to high (heat), high
beam headlights, and rear defogger. Do not use cyclical
loads such as air conditioning or windshield wipers.
8.
When testing older model
diesel engines, the users need
to run up the engine to 2500
rpm for 15 seconds. You will view the screen as follows:
9.
Press «ENTER» to look for the amount of ripple from
ALT. IDLE VOLTS
××.××V NORMAL
ALT. IDLE VOLTS
××.××V HIGH
TURN ON LOADS
AND PRESS ENTER
RUN ENGINE UP TO
2500 RPM 15 SEC.
