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Home >> Buick >> 2012 >> Regal Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 229 (Secondary And Configurable Customer Control System) >> Diagnostic Information and Procedures >> Radio Control Multi-Function Switch Malfunction >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2011 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, cellular, entertainment and navigation (radio) ON.
  2. Press and/or scroll each of the buttons on the radio control switch.
  3. The cellular, entertainment and navigation (radio) should respond to desired function of the radio switch.
  4. Ignition ON, observe the DTC information with a scan tool. Verify no DTCs are set.