Voltage Drop Test
VOLTAGE DROP TEST OF GENERATOR OUTPUT WIREThis test determines whether or not the wiring between the generator "B" terminal and the battery (+) terminal good by the voltage drop method.
PREPARATION
1. Turn the ignition switch to "OFF."
NOTE: To find abnormal conditions of the connection, actions should not be taken on the two terminals and each connections during the test.
2. Connect a digital voltmeter between the generator "B" terminal and battery (+) terminal. Connect the (+) lead wire of the voltmeter to the "B" terminal and the (-) lead wire to the battery (+) terminal.
CONDITIONS FOR THE TEST
1. Start the engine.
2. Turn on the headlamps, blower motor and so on. And then, read the voltmeter under this condition.
RESULT
1. It is okay if the voltmeter indicates the standard value.
Standard value 0.2 V max.
2. If the value of the voltmeter is higher than expected (above 0.2 V max.), poor wiring is suspected. In this case check the wiring from the generator "B" terminal to the fusible link to the battery (+) terminal. Check for loose connections, color change due to an overheated harness, etc. Correct them before testing again.
3. Upon completion of the test, set the engine speed at idle Turn off the head lamps, blower motor and the ignition switch.