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4.8.4.
If the cranking voltage is normal, press «ENTER» to begin
charging system test.
4.8.5.
Press the «ENTER» key, you will view the following screen.
4.8.6.
Press the «ENTER» key, one of the three results will be
displayed along with the actual reading measured.
LOW CHARGING VOLTS WHEN TESTING AT IDLE
The alternator is not providing sufficient current to the battery.
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 TESTING AT IDLE
The system is showing normal output from the alternator.
No problem is detected.
HIGH CHARGING VOLTS WHEN TESTING 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.
4.8.7.
Following the charging system at idle, press «ENTER» for the
charging system with accessory loads. Turn on the heater to
high (heat), high beam headlights, and rear demister
(if equipped). Do not use cyclical loads such as air conditioning
or windshield wipers.
4.8.8.
When testing older model diesel engines, the users need to
run up the engine to 2500 rpm for 15 seconds.
The following screen will be displayed:
4.8.9.
Press «ENTER» to look for the amount of ripple from the
charging system to the battery. One of two testing results
will be displayed along with the actual testing measured.
RIPPLE DETECTED NORMAL
Diodes functioning well in the alternator/stator
© Jack Sealey limited
PRESS ENTER FOR
= cHARGING TEST =
mAKE SuRE All
lOADS ARE OFF
AlT. IDlE VOlTS
XX.XXV
AlT. IDlE VOlTS
XX.XXV
AlT. IDlE VOlTS
XX.XXV
TuRN ON lOADS
AND PRESS ENTER
RuN ENGINE uP TO
2500RPm 15 SEc.
RIPPlE DETEcTED
XX.XXV
NORmAl
OR
NO RIPPlE DETEcTED
Original Language Version
lOW
NORmAl
HIGH
bT2014 | Issue:1 01/06/17
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