Do you have a question about the 3320 and is the answer not in the manual?
Questions and answers
Allen E Mustoe
April 4, 2025
Trying to check alternator voltage
1 comments:
Mr. Anderson
April 4, 2025
To check alternator voltage with the Innova 3320 digital multimeter:
1. Set the Selector Switch to the DC voltage (DCV) position. 2. Connect the black (COM) lead to a good ground point on the vehicle (e.g., engine block or vehicle frame). 3. Connect the red lead to the output terminal on the back of the alternator. 4. Start the engine and observe the voltage reading. 5. A healthy alternator typically shows around 13.8 to 14.5 volts. 6. If voltage is low (around 12.2 volts) or shows little increase from battery voltage, check for a bad ground connection or a faulty alternator.
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Do you have a question about the 3320 and is the answer not in the manual?
Questions and answers
Trying to check alternator voltage
To check alternator voltage with the Innova 3320 digital multimeter:
1. Set the Selector Switch to the DC voltage (DCV) position.
2. Connect the black (COM) lead to a good ground point on the vehicle (e.g., engine block or vehicle frame).
3. Connect the red lead to the output terminal on the back of the alternator.
4. Start the engine and observe the voltage reading.
5. A healthy alternator typically shows around 13.8 to 14.5 volts.
6. If voltage is low (around 12.2 volts) or shows little increase from battery voltage, check for a bad ground connection or a faulty alternator.
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