XJ-6 L6-4.2L (1983)
REGULATOR TEST
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Tester still attached, engine at 3000 RPM.
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Reduce load to Zero (load indicator light out).
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Allow to run until charging below 10 AMPS.
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Voltage between 13.6 - 14.4.
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If incorrect, replace regulator and retest.
CURRENT DRAIN TEST
If battery goes dead, and battery and alternator check okay, or alternator test shows low amperage:-
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Set ammeter to lowest scale and connect to battery ground cable.
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Ignition and all electrical loads off.
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Ammeter should be Zero (may be slight reading from trip computer - milliamps only).
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If incorrect, remove fuses one by one until ammeter reads Zero.
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Ignition on - all other electrical loads off.
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Ammeter should be 5-6 AMPS.
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If more, remove fuses one at a time to pinpoint trouble circuit.
