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1. Disconnect the wire from terminal B of the generator, then connect it to the negative (-) lead of an ammeter. 2. Connect the positive (+) lead of the ammeter to terminal B of the generator. 3. Connect the positive (+) lead of a voltmeter to the positive (+) terminal of the battery. 4. Ground the negative (-) lead of the voltmeter. Fig. 7: Inspecting Charging Circuit Without Load b. Check the charging circuit. 1. Keep the engine speed at 2000 rpm and check the reading on the ammeter and voltmeter. Standard current: 10 A or less Standard voltage: 13.2 to 14.8 V If the voltmeter reading is more than the standard voltage, replace the voltage regulator. HINT: If the battery is not fully charged, the ammeter reading will sometimes be more than the 8. INSPECT CHARGING CIRCUIT WITH LOAD a. With the engine running at 2000 rpm, turn the high beam headlights ON and turn the heater blower switch to the "HI" position. b. Check the reading on the ammeter. Standard current: 30 A or more If the ammeter reading is less than the standard amperage, repair the generator.
2009 Toyota Tundra 2009 ELECTRICAL Charging (1GR-FE) - Tundra
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