Horn Testing; Alternator Rotor Testing; Alternator Regulator Testing - Gauss BT010 Manual Del Usuario

ATTENTION: Remember to NEVER hold the halo-
gen light by its glass lamp. This could expose you to
serious burns when testing and damage the lamp.
Preferably, wear safety gloves and protective gog-
gles to prevent accidents.

3.2.2 Horn Testing

Select the voltage at the Tester power supply (12
Volts or 24 Volts) corresponding to the horn specification,
then connect the connection cables according to the ins-
tructions below.
NOTE: Electronic horn models have defined polarity at the
terminals and the correct connection to the power supply
must be followed for proper functioning. Horn sold in bass
and treble pairs should be tested separately to prevent
overloading and damage to the power supply.

3.2.3 Alternator Rotor Testing

To measure rotor consumption, select the "AMPS"
option on the power supply testing module and set the vol-
tage to the value for the rotor specification (12 Volts or
24 Volts). Connect the connection cables to the collector
rings on the rotor as indicated in the image below. Watch
the current consumption of the rotor on the digital display.
If the values are not close to 4.0 Amperes for 12-Volt al-
ternator rotors or 2.0 Amperes for 24-Volt alternator rotors,
the rotor is defective.
To check the condition of the rotor winding, firmly
connect the connection cables to the collector rings and,
with the power supply connected, remove one of the ca-
bles quickly, noting the spark that forms between the rotor
ring and the tip of the testing cable. The spark should be
Electronic Auto Parts Tester Manual BT010
bright and white. If the spark is very weak and accompa-
nied by yellow sparks, the rotor may have a defective win-
ding with shorted turns and should be replaced.
NOTE: If at any time you notice that the digital display has
a voltage other than 12 or 24 Volts, contact technical su-
pport and ask for a technical review of the Tester to check
the condition of the power supply, and do not use it. Re-
member that powering a component with voltage higher
than those designed can cause damage to the component.

3.3 Alternator Regulator Testing

First, find the technical information for the model
to be tested on the website www.gauss.com.br/bt010:
• Press the "ALTERNATOR REGULATOR" button
• Select the rated voltage of the regulator (12 Volts or 24
Volts)
• Select the type of regulator: TYPE A or TYPE B. TYPE A
is when one of the alternator rotor power supply brushes is
permanently connected to the POSITIVE battery terminal
and TYPE B is when one of the alternator rotor brushes
is permanently connected to ground (NEGATIVE battery
terminal)
• Connect the testing harness (RM01) as indicated in the
instructions for each regulator, abiding by the colors cor-
responding to each function
• In regulators with a "LAMP" pin, the PILOT LAMP and
the YELLOW LED on the Tester's "SET POINT" indicator
should light up
• Press and hold the "TEST" button during the regulator
test. Watch the digital screen to check the adjusted voltage
and compare it to the value informed for the model. Check
the "SET POINT" LEDs:
adjusted voltage is within the NORMAL range (between
13.8 and 14.9 Volts), but there are exceptions duly shown
on the website. In regulators with lamp pin, the PILOT
LAMP should go out, indicating that the lamp control is
working properly. The "FIELD" lamp should light up and, in
some regulator models, a slight oscillation may be obser-
ved, demonstrating the field current control
NOTE: Wait approximately 5 seconds for the reading to
stabilize. Some regulators have "LAMP" and "IGNITION"
pins and reversing the connection can cause damage to
the regulator being tested.
Regulators with "AUX" terminal - regulator signal
output terminal to control an auxiliary relay in addition to
the lamp. To observe this control, connect the auxiliary
lamp (LA01) supplied with the Tester between the orange
and black tips of the cable harness (RM01). Before perfor-
ming the test, the Tester's pilot lamp will light up and the
auxiliary lamp (LA01) will remain off. During the test, the
pilot lamp should turn off and the auxiliary lamp (LA01)
should light up.
Regulators with "DFM", "FR", "LI" terminal - re-
gulator pulse output terminal to the vehicle's Electronic
Control Unit to inform about the regulator's functioning. To
GREEN LED indicates that the
EN
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