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Home >> Buick >> 2012 >> Regal Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 378 (Secondary And Configurable Customer Control System) >> Diagnostic Information and Procedures >> DTC B1405 >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2013 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
  1. Engine running, accessories OFF, measure and record the battery voltage at the battery terminals.
  2. Verify the voltage measured at the battery terminals is between 12.6-15.0 V.
    • If between 12.6-15.0 V 
  3. Refer to Circuit/System Testing .