Load Test
- With the engine running, turn the air conditioner on, if equipped, the blower motor (18527) on high speed and the headlamps on high beam.
- Increase the engine speed to approximately 2000 rpm. The voltage should increase a minimum of 0.5 volts above the base voltage. If the voltage does not increase as specified, refer to Generator On-Vehicle Tests and Generator Bench Tests in the Diagnosis and Testing portion of this section. If the voltage increased as specified, the charging system is operating normally. Proceed to the following battery tests.