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Home >> Buick >> 2012 >> Regal Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Battery, Charging System And Starting System - Hybrid) >> Diagnostic Information and Procedures >> Charging System Test >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different variant/trim than selected.
  1. Ignition ON, verify that no G13 Generator or B18 battery current sensor DTCs are set that would cause a charging system concern.
  2. Ignition OFF, measure the voltage across the battery terminals. The voltage should read 12.0 V or greater at room temperature.
    3. NOTE:

    Ensure vehicle accessories are OFF for the next step.

  3. Engine ON, increase engine speed to 2, 500 RPM. Verify the battery voltage is between 12.6-15.0 V.
    • If not within specified range, replace the K59 Starter/Generator Control Module.
  4. Engine ON, increase engine speed to 2, 500 RPM. Turn ON all vehicle accessories. Verify the battery voltage is between 12.6-15.0 V.
    • If not within specified range, replace the K59 Starter/Generator Control Module.
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