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Home >> Saab >> 2010 >> 9-5 >> Repair and Diagnosis >> Electrical >> Charging Systems >> Charging And Starting System >> Fault diagnosis, symptoms >> Charging System Test >> Circuit/System Testing

Circuit/System Testing

  1. Ignition ON, verify that no G13 generator or B18 battery current sensor DTCs are set that would cause a charging system concern.
  2. If DTCs are set, refer to Charging And Starting System DTC Index .
  3. Ignition OFF, measure the voltage across the battery terminals. The voltage should read 12.0 V or greater at room temperature.
  4. If not within the specified range, refer to BATTERY INSPECTION/TEST .
  5. NOTE: Ensure vehicle accessories are OFF for the next step.

    Engine ON, increase engine speed to 2 500 RPM. Verify that the battery voltage is 12.6-15.0 V.

  6. If not within specified range, replace the G13 generator.
  7. Engine ON, increase engine speed to 2 500 RPM. Switch ON all accessories in the vehicle. Verify the battery voltage is between 12.6-15.0 V.
  8. If not within specified range, replace the G13 generator.
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