TecMate TestMATE Manual Del Usario página 5

ALT. IDLE VOLTS
xx,xx V
7. Following the charging system at idle, press
«ENTER» for the charging system with accessory
loads. Turn on the blower to high (heat), highbeam
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 the charging system to the battery.
One of two testing results will be displayed along with the actual testing measured.
RIPPLE DETECTED
xx,xx V
NO RIPPLE DETECTED
RIPPLE DETECTED
xx,xx V
10. Press the «ENTER» key to continue the charging system with accessory loads. One of
the three results will be displayed along with the actual testing measured.
ALT. LOAD VOLTS
xx,xx V
HIGH
NORMAL
HIGH
HIGH
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 specifi cations
for the correct limit, as it will vary by vehicle type
and manufacturer.
Ripple detected normal
Diodes function well in the alternator / stator.
No ripple detected
Excess ripple detected
One or more diodes in the alternator are not
functioning or there is stator damage. Check
to ensure the alternator mounting is sturdy and
that the belts are in good shape and functioning
properly. If the mounting and belts are good,
replace the alternator.
Charging system high when test with accessory
loads
The voltage output from the alternator to the battery
exceeds the normal limits of a functioning regulator.
Check to ensure there are no loose connections
and that the ground connection is normal. If there
are no connection issues, replace the regulator.
Since most alternators have the regulator built-in,
this will require you to replace the alternator.
TURN ON LOADS
AND PRESS ENTER
RUN ENGINE UP TO
2500 RPM 15 SEC
Or
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