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CHARGING SYSTEM TSB Revision ENGINE ELECTRICAL 16-9 5. Connect a voltmeter with a range of 0 − 20 V between the generator "B" terminal and the WARNING Battery posts, terminals and related 6. Connect the negative battery cable. 7. Connect a tachometer or scan tool MB991502. 8. Leave the hood open. 9. Check to be sure that the reading on the voltmeter is equal to the battery positive voltage. NOTE: If the voltage is 0 V, the cause is probably 10.After turning the light switch on and turning on the headlights, start the engine. NOTE: Because the current from the battery will 11.Immediately after setting the headlights to high beam and turning the heater blower switch to the Limit value: 70% of nominal current output NOTE: For the nominal current output, refer to the NOTE: The current output value will depend on NOTE: If the electrical load is small while testing, NOTE: The specified level of current also may not 12.The reading on the ammeter should be above the limit value. If the reading is below the limit value 13.Run the engine at idle speed after the test. 14.Turn the ignition switch to the "LOCK" (OFF) position. 15.Disconnect the tachometer or scan tool MB991502. WARNING Battery posts, terminals and related 16.Disconnect the negative battery cable. 17.Disconnect the ammeter and voltmeter and tachometer. 18.Connect the generator output wire to the generator "B" terminal. WARNING Battery posts, terminals and related 19.Connect the negative battery cable.Before the test, always be sure to check the following. |