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Home >> Chevrolet >> 2011 >> Impala Police >> Repair and Diagnosis >> External Pages >> Different car >> Section 659 (Lighting Systems) >> Diagnostic Information and Procedures >> DTC B2590 >> Circuit/System Testing

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, disconnect the BCM. Using a test lamp connected to ground, probe the left cornering lamp control circuit. Verify the test lamp illuminates.
    • If the test lamp does not illuminate, replace the BCM.
  2. Test for a short to voltage in the left cornering lamp control circuit.
    • If all circuits/connections test normal, replace the underhood electrical center.
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