Output Current Test [V6]: Preparation
WARNING:
The battery that is used to test the output current should be one that has been partially discharged. With a fully charged battery, the test may not be conducted correctly due to an insufficient load.
NOTE:
Tighten each connection securely, as a heavy current will flow. Do not rely on clips.
NOTE:
After the engine start up, the charging current quickly drops. Therefore, the above operation must be done quickly to read the maximum current value correctly.
NOTE:
The nominal output current value is shown on the nameplate affixed to the generator body. The output current value changes with the electrical load and the temperature of the generator itself. Therefore, the nominal output current many not be obtained. If such is the case, keep the headlights on to cause discharge of the battery, or use the lights of another vehicle to increase the electrical load. The nominal output current may not be obtained if the temperature of the generator itself or ambient temperature is too high. In such a case, reduce the temperature before testing again.
- Check the battery installed in the vehicle to ensure that it is in good condition. See Fig 1.
- Check the tension of the generator drive belt.
- Turn off the ignition switch.
- Disconnect the battery ground cable.
- Disconnect the generator output wire from the generator "B" terminal.
- Connect a DC ammeter (0 to 100A) in series between the "B" terminal and the disconnected output wire.
- Be sure to connect the (-) lead wire of the ammeter to the disconnected output wire.
- Connect a voltmeter (0 to 20V) between the "B' terminal and ground. Connect the (+) lead wire to the generator "B" terminal and (-) lead wire to a good ground.
- Attach an engine tachometer and connect the battery ground cable.
- Leave the engine hood open.