9.4 Alternator results summary
1. After analysis results will be displayed
Results can now be printed (see section 7.1)
The tables below show the acceptable Voltage ranges for each type of vehicle and
alternator. Any values outside of these ranges will be highlighted in the results.
Normal alternators
12V vehicles
24V vehicles
MIN
Voltage
MAX
Voltage
MIN
Voltage
MAX
Voltage
Unloaded (Upper Voltage)
Test
> 13.3V
< 15.0V
> 26.6V
< 30.0V
Loaded (Lower Voltage) Test
> 12.6V
> 13.8V
> 25.2V
> 27.6V
Smart alternators
12V vehicles
24V vehicles
MIN
Voltage
MAX
Voltage
MIN
Voltage
MAX
Voltage
Unloaded (Upper Voltage)
Test
> 12.4V
< 16.2V
> 24.8V
< 33.0V
Loaded (Lower Voltage) Test
> 12.0V
> 12.4V
> 24.0V
> 24.8V
10. Earth Test
This test checks that the earth connections between battery, engine and vehicle chassis are
in good condition. A high resistance caused by loose or corroded connections can lead to
poor starting.
10.1 Test procedure
First select Earth Test then press ENTER
Move the GYT250 black clamp from the battery negative terminal (-) to a suitable
position on the vehicle chassis and press ENTER
for analysis to take place
Содержание GYT250
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