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Home >> Hummer >> 2008 >> H3 Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 88 (Lighting Systems) >> Diagnostic Information and Procedures >> DTC B3949 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2008 Chevrolet Malibu Classic. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, turn signals OFF.
  2. Observe the right front turn signal. The turn signal should not be illuminated.
    • If the turn signal is illuminated, test the right turn signal lamps supply voltage circuit for a short to voltage.
  3. Test the right turn signal lamps supply voltage circuit for a short to ground or an open/high resistance.
  4. If all circuits test normal, replace the BCM.
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