Generator On-Vehicle Tests - Load Test
WARNING: This page is about a different car, the 2005 Ford Pickup, 2005 Ford F550 Super Duty, 2005 Ford F450 Super Duty, and 2005 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
- Switch the tester to the ammeter function.
- Connect the positive and negative leads of the battery tester to the corresponding battery terminals.
- Connect the current probe to the generator B+ output terminal, circuit 36 (YE/WH).
- With the engine running at 2,000 rpm, adjust the tester load bank to determine the output of the generator. The generator output should be at least 87 amps.
- With the engine running, turn the A/C on, 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.
- If 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.