Generator On-Vehicle Tests - Load Test
- Switch the tester to the ammeter function.
- Connect the positive and negative leads of the tester to the corresponding battery terminals.
- Connect the current probe to the generator B+ output terminal, circuit 38 (BK/OG).
- With the engine running at approximately 2,000 rpm, adjust the tester load bank to determine the output of the generator. Generator output should be at least 76 amps.
120 Amp Generator
- With the engine running, turn the A/C on (if equipped), the blower motor on high speed and the headlamps on high beam.
- Increase the engine speed to approximately 2,000 rpm. The voltage should increase a minimum of 0.5 volt above the base voltage.
- the voltage does not increase as specified, carry out the GENERATOR ON-VEHICLE TESTS - NO LOAD TEST .
- If the voltage increases as specified, the charging system is operating normally.