VOLTMETER
The PBT-50 can function as a voltmeter with a range of 8 to 19.0
volts. For an accurate live voltage measurement, the battery must
be good and fully charged.
1. Connect the tester clamps to the battery: red to the po)
terminal, black to the negative (–) terminal. Rock each clamp
back and forth to make a good connection.
2. Press the
V
V
V
V
V
button to read the live voltage.
3. Start the engine.
4. Read the voltage while the engine is running.
Result
V
V
V
V
V
olts reading is between 13.5 volts and 14.8 volts
= Charging System OK
V
V
V
V
V
olts reading is greater than 14.8 volts
= Charging System Problem.
Check regulator.
V
V
V
V
V
olts reading is less than 13.5 volts
= Charging System Problem.
Check connections, wiring, and alternator.
•
3
•
