Rio5 L4-1.6L (2006)
Alternator: Testing and Inspection
Voltage Drop Test of Generator Output Wire
VOLTAGE DROP TEST OF GENERATOR OUTPUT WIRE
This test determines whether or not the wiring between the generator "B" terminal and the battery (+) terminal is good by the voltage drop method.
PREPARATION
1. Turn the ignition switch to "OFF".
2. Disconnect the output wire from the generator "B" terminal. Connect the (+) lead wire of ammeter to the "B" terminal of generator and the (-) lead
wire of ammeter to the output wire. Connect the (+) lead wire of voltmeter to the "B" terminal of generator and the (-) lead wire of voltmeter to the
(+) terminal of battery.
TEST
1. Start the engine.
2. Turn on the headlamps and blower motor, and set the engine speed until the ammeter indicates 20 A.
And then, read the voltmeter at this time.
RESULT
1. The voltmeter may indicate the standard value.
Standard value: 0.2 V max
2. If the value of the voltmeter is higher than expected (above 0. 2V max.), poor wiring is suspected. In this case check the wiring from the generator
"B" terminal to the battery (+) terminal. Check for loose connections, color change due to an over-heated harness, etc. Correct them before testing
again.
3. Upon completion of the test, set the engine speed at idle.
Turn off the headlamps, blower motor and the ignition switch.
