Generator On-Vehicle Tests - No Load Test
- Switch the battery tester to the voltmeter function.
- Connect the voltmeter positive lead to the generator B+ output terminal, circuit (B/O) for 2.3L or circuit (Y/W) for 3.0L, and the negative lead to ground.
- Turn all electrical accessories off.
- With the engine running at 2,000 rpm, check the generator output voltage. The voltage should be between 13.0 and 15.0 volts. If not, see the Symptom Chart.