MSG MS013 COM, User Manual

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• Check the alternator operation under average rotation frequency of the crankshaft when battery
charge is full. Increase load on the alternator by turning on the headlights and other lighting
devices. FR value should change as well. If voltage is within the norm, the voltage regulator is
faultless. If voltage is above or below the norm, check the voltage regulator and replace it if
necessary. If voltage is out of the norm, the alternator should be dismounted from the car for
repair.
• Connect the control terminal of the alternator back to the car.
• Check the adapter’s indication. If the alternator output voltage value exceeds the norm, check
the signal in data transmission line ("LIN", "CAN", "K-LINE") in the mode of oscillograph.
• Stop the engine.
• Disconnect the adapter terminals from the car.
WARNING! Testing must be carried out in the premises with combined extract and input
ventilation or fume offtake system. Otherwise, testing must be conducted outdoors.
6.2 Testing of the voltage regulator separately
from the alternator
Testing of the voltage regulator separately from the alternator is conducted with the help of
nine-wire cable
(Fig. 3) . The device is connected to the voltage regulator according to the color
marking described in the point 3.2 and Appendix 2. The testing is conducted in the following
sequence:
• Connect the adapter to power supply through USB connector.
• Select the needed option in the menu with the buttons "⇧", "⇩".
• Connect all the needed voltage regulator outputs. Tips with the most common types of
connectors will appear on the screen.
• Enter the testing mode with the button "⏎".
• Follow the display indication and adjust voltage with the buttons "⇧", "⇩". If the voltage regulator
is faultless, the measured voltage should change for "B+" when changing the set voltage; and
there should be no errors in COM voltage regulators.
• Exit the testing mode with the button "⏎".
User Manual - Adapter MSG MS013 COM