2.3.2 Charging Test Result:
Charging Volt: Normal. The generator output normal, no problem detected.
Charging Volt: Low. Check drive belt of the generator whether slip or running off. Check the
connection between generator and battery is normal or not. If both of the drive belt and the
connection are in good condition, follow the manufacturer's suggestion to eliminate generator
fault.
Charging Volt: High. Since most of the vehicle generators are using internal regulator, the
generator assembly has to be replaced.(Some old style cars are using external regulator, then
directly replace the regulator.) The normal high volt of the voltage regulator is maximum
14.7±0.5V.If charging volt is too high, it will overcharge the battery. Therefore, the battery life will
be shortened and troubles will be caused.
No Volt Output. No generator volt output is detected. Check the generator connection cable, the
drive belt of generator and engine whether normal or not.
Diode Test: Through the test of charging current ripple, tester will find out whether the diode is
normal or not. When ripple volt is too high, it proves at least one diode is damaged. Check and
replace the diode.
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3 FAQ
3.1 Screen Not Light
Check whether the Power is turned on.
Check connection with the battery whether it's well connected.
Battery voltage is too low to drive the tester (< 1.0V). Fully charge the battery and retest.
Internal 9V battery may need to be replaced. Replace the 9V battery and retest.
3.2 Current Clamp Common Fault
"Low Voltage" indicator flashes, replace the internal 9V battery of the current clamp.
Displayed current value is 0A/1A/2A, or over 900A, or messy code, no Reset before the test or the
actual current exceeds the measure range.
4 Packing List
5 Warranty
This warranty is expressly limited to persons who purchase Udiag products for purposes of resale or
use in the ordinary course of the buyer’s business. Udiag electronic product is warranted against
defects in materials and workmanship for
one year
from date of delivery to the user. This warranty
does not cover any part that has been abused, altered, used for a purpose other than for which it was
intended, or used in a manner inconsistent with instructions regarding use. The exclusive remedy for
any automotive part found to be defective is repair or replacement, and Udiag shall not be liable for
any consequential or incidental damages.
●1X BST300 battery tester main unit
●1X User Manual
NOTE: Carefully check the device parts list
before using. Any doubt, contact us
immediately.
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