3. Upon completion of the test, set the engine speed at idle. Turn off the head lamps, blower motor and the ignition switch.
1. Prior to the test, check the following items and correct as necessary.
Check the battery installed in the vehicle to ensure that it is in good condition. The battery checking method is described in
2. Turn off the ignition switch.
3. Disconnect the battery ground cable.
4. Disconnect the generator output wire from the generator "B" terminal.
5. Connect a DC ammeter (0 to 150A) 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.
Tighten each connection securely, as a heavy current will flow. Do not rely on clips.
6. 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.
7. Attach an engine tachometer and connect the battery ground cable.
8. Leave the engine hood open.
1. Check to see that the voltmeter reads as the same value as the battery voltage. If the voltmeter reads 0V, and the open
circuit in the wire between the generator "B" terminal and battery (-) terminal, a blown fusible link or poor grounding is
2. Start the engine and turn on the headlights.
3. Set the headlights to high beam and the heater blower switch to HIGH, quickly increase the engine speed to 2,500 rpm and
read the maximum output current value indicated by the ammeter.
After the engine starts up, the charging current quickly drops. Therefore, the above operation must be done quickly to
1. The ammeter reading must be higher than the limit value. If it is lower but the generator output wire is in good condition,
remove the generator from the vehicle and test it.