Toyota small passenger charging indicator light not be quenched

        Symptom: a Toyota passenger cars, closed switches switch, charging indicator light lights; After starting, charging indicator light reddish; increase engine speed, charging indicator light brightness actually strengthened.
        Failure Analysis and Maintenance: Toyota minibus double set of double-stage vibration obd2 scan tool regulator, a voltage regulator for the engine group, a group of charging indicator light relay. When the switch is closed switches, battery current through the charging indicator light, charging indicator light relay normally closed contact and grounding, charging indicator light, shiny; after starting, charging indicator light reddish, indicating that the relay is normally closed contacts break open, then it indicates that the generator has power, in which linear voltage-controlled charging indicator light relay coil is energized and suck the next boom contact, then the generator output current through the charging indicator light, festival and take the pressure coil iron, in charging indicator light circuit in series with the coil due to an increase of loop resistance, so the charging indicator turns reddish-like, is a normal state. When the speed increases, the generator voltage increases, broken appliances normally open contacts are closed, the generator output current through the charging indicator light, the relay is closed normally open contacts and went back to the generator output terminal ends of the same potential without voltage, so the charging indicator light should go off. The charging indicator light not only do not go out, but the brightness increases; measured with a multimeter DC voltage profile generator vcs scanner voltage, the results voltages up to 14.5V, indicating that the generator is working properly, the cause is charging indicator light relay normally open contact in the closed state under the conductive bad, or normally closed contacts connected to the output of the generator welding head off. After examination, the connection joints in good condition; check charging indicator light relay normally open contacts, found that the contact oxidation, poor conductivity.
        After sanding the contact charging light goes out, troubleshooting.
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