Mazda 626 1989 Workshop Manual page 367

N um ber: 0 0 2 /9 3
D a te Issued: 9 /1 6 /9 3 Revised:
Section 4 - CHARGING SYSTEM DIAGNOSTICS CONTD.
4. Start the vehicle and raise the RPM to 2500.
5. Connect a battery load tester (VAT 40/70 or equivalent)
6. Apply a load equal to the alternator rating. The generated voltage should be 14.1V to 14.7V.
LOAD TEST RESULTS
Over 14.7V - Replace Alternator
Under 14.1 V - Check tor resistance between the battery and terminals "B" and "S". If resistance is present,
repair the damaged harness and retest. If the voltage is still below 14.1V, replace the alternator.
14.1V to 14.7V - No trouble with the alternator or battery.
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