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Home >> Cadillac >> 2006 >> STS V >> Repair and Diagnosis >> External Pages >> Different car >> Section 663 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> Radio Controls Malfunction (With Navigation) >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2013 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify no DTCs are set as current
  2. Ignition ON, radio ON, verify the radio/HVAC controls backlighting illuminates and that all controls perform the correct function.
    • If some, but not all, controls operate normally, replace the radio/HVAC controls.
    • If all controls are inoperative, refer to Circuit/System Testing .
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