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Home >> Chevrolet >> 2012 >> Impala Police, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 659 (Lighting Systems) >> Diagnostic Information and Procedures >> DTC B2530 >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2007 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
  1. Clear the DTC. Park lamp switch OFF, fog lamp switch OFF. Disconnect the fog lamp relay. Using a test lamp connected to ground, probe the fog lamp control circuit. Verify the test lamp illuminates.
    • If the test lamp does not illuminate, replace the fog lamp relay.
  2. Test for a short to voltage in the fog lamp control circuit.
    • If all circuits/connections test normal, replace the BCM.
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