15-34 ELECTRICAL SYSTEM
Start the engine, and note the voltage readings at vari-
ous engine speeds with the headlight turned on and then
turned off. (To turn off the headlight of United States and
Canada models disconnect the headlight connector). The
readings should show nearly battery voltage when the en-
gine speed is low, and, as the engine speed rises, the
readings should also rise. But they must be kept under
the specified voltage.
Regulator/Rectifier Output Voltage
Tester (+) to
25 V DC
Turn off the ignition switch to stop the engine, and discon-
nect the hand tester.
If the regulator/rectifier output voltage is kept between the
values given in the table, the charging system is consid-
ered to be working normally.
If the output voltage is much higher than the values spec-
ified in the table, the regulator/rectifier is defective or the
regulator/rectifier leads are loose or open.
If the battery voltage does not rise as the engine speed
increases, the regulator/rectifier is defective or the alter-
nator output is insufficient for the loads. Check the al-
ternator and regulator/rectifier to determine which part is
Tester (−) to
14 ∼ 15 V