Alternator Test - Matco Tools MBT2415 Instruction Manual

From the main MENU (Fig.42), select
Press key to continue and the display will show (Fig.43):
Note: In event that you did not crank the engine while on this screen; the starter test will be
terminated after 30 seconds and will return to the main menu.
3. Now switch the ignition key to ON and start cranking the engine until it starts. As soon as the engine starts, the
results will automatically display as shown in examples below (Fig.44 or Fig.45):
10.36V
Fig.44
Note: 9.6 Volt is the voltage drop limit for 12V system whereas 19.2 Volt is for 24V system. Voltage drop
more than the limits mentioned are considered bad.
4. To print out the results, just press
5. Pressing the

Alternator Test:

This test is only available in
Alternator at 2,500 –3000 RPM without load and 1,500 – 2,000 RPM with all loads ON. As Normal and Smart Alternators
on a 12V and 24V systems have its own set of parameters, it can determine the alternator's charging conditions and
with the test results, you can check its condition in reference to the vehicle's Service Manual.
No load testing at 2,500 – 3,000 RPM
1. With engine OFF, place the vehicle transmission in NEUTRAL for Manual or PARK for Automatic and apply
the parking brake.
Fig.42
Fig.43
OR
Normal voltage
drop
key on the Analyzer, the printer will start printing.
key will exit and return to the main menu screen (Fig.42).
test. It checks the MAX and MIN charging voltages output of Normal or Smart
by scrolling left using  key.
Starter Test
State of charge
voltage (depends
whether 12V or
24V battery)
before cranking
High voltage drop
9.36V
Less than 9.6V
Fig.45
18
1812411-11