Generators & Regulators: Diagnosis — Generators & Regulators — Charging System

Generators & Regulators: Diagnosis Honda Passport II

Charging System 1 illustration ~296 words

TROUBLE SHOOTING

Note. See TROUBLE SHOOTING article in GENERAL INFORMATION.

Visually check generator belt and wiring. Turn ignition switch to ON position and observe battery indicator light. If indicator light does not come on, go to next step. If indicator light comes on, go to step 3 .
Disconnect generator connector. Connect a fused jumper between ground and generator connector terminal "L" (White/Blue wire). See «WIRING DIAGRAMS»(ref-4243-S38033623822000061600000) . If battery indicator light comes on, replace generator. If battery indicator light does not come on, check for burned out bulb, poor connection or faulty circuit.
Start engine and observe battery indicator light. If indicator light goes out, system is operating normally. If indicator light does not go out, check charging system. See «CHARGING SYSTEM TEST»(ref-4243-S08944486622000061600000) .

WARNING

To avoid a battery explosion, ensure carbon pile tester is OFF before connecting it to battery.

WARNING

To avoid a battery explosion, ensure carbon pile tester is off before connecting it to battery.

Mount generator on test stand. Ensure ground polarity of generator and battery are the same. Connect generator to a fully charged 12-volt battery. Connect voltmeter, ammeter, carbon pile (in OFF position) and 30-500 ohm resistor between battery and generator terminal "L". (Scheme 5)
Slowly increase generator speed and observe voltmeter reading. If voltage is less than 16 volts, go to next step. If voltage is uncontrolled and increases to more than 16 volts, rotor field is shorted and/or voltage regulator is defective. A shorted rotor field can cause voltage regulator to become defective. Repair as required.
If voltage is less than 16 volts, increase generator speed and adjust carbon pile to obtain maximum current output. Maintain voltage at 13 volts. If maximum current output is within 15 amps of generator rated output, generator is okay. See «GENERATOR SPECIFICATIONS»(ref-4243-S08869321942000061600000) table. If maximum current output is not within 15 amps of rated output, repair or replace generator.