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Home >> Mazda >> 2004 >> RX-8 1.3 3 >> Repair and Diagnosis >> Electrical >> Charging Systems >> Charging System >> Generator Inspection >> Generator >> Current

Generator Inspection: Generator: Current

  1. Verify that the battery is fully charged.
  2. Verify that the drive belt deflection/tension is within the specification. (See DRIVE BELT DEFLECTION/TENSION INSPECTION .)
  3. Disconnect the negative battery cable.
  4. Connect a tester capable of reading 120 A or above  between generator terminal B and the wiring harness.
  5. Connect the negative battery cable.
  6. Turn off all electrical loads.
  7. Start the engine.
  8. Increase engine speed from 2,000-2,500 RPM. 
  9. Turn the following electrical loads on and verify that the current reading increases.
    • Headlights
    • Blower motor
    • Rear window defroster
    NOTE:
    • Current required for generating power varies with electrical loads applied.

Reference value 

Current possible for power generation (differs according to load) 

[Conditions] ambient temperature 20°C {68 °F}, voltage 13.0-15.0 V, engine warm 

Engine speed (RPM) Terminal B current (A)
1,000 0(1)-70
2,000 0(1)-97
(1) The lower limit must be more than 0 A.
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