Instrument Cluster Illumination And Panel Illumination

• Description and Operation
  • Instrument Panel Cluster (IPC) and Panel Illumination - Overview
    • Overview
      • Dimmable Backlighting
      • Non-dimmable Backlighting
  • Instrument Panel Cluster (IPC) and Panel Illumination - System Operation and Component Description
    • System Operation
      • System Diagram
      • Network Message Chart
        • IPC Network Input Messages
        • APIM, FCIM and FCDIM Network Input Messages
        • HVAC Module (EATC) Network Input Messages
        • Dimmable Backlighting
        • Non-Dimmable Backlighting
        • Field-Effect Transistor (FET) Protection
    • Component Description
      • Dimmer Switch
• Diagnosis and Testing
  • Instrument Panel Cluster (IPC) and Panel Illumination
    • DTC Chart: Body Control Module (BCM)
      • Notes
      • BCM DTC Chart
      • DTC Chart: Front Control/Display Interface Module (FCDIM)
      • FCDIM DTC Chart
    • Symptom Chart(s)
      • Symptom Chart: Instrument Cluster and Panel Illumination
    • Symptom Chart
    • Pinpoint Tests
      • All Dimmable Illumination (Networked And Non-Networked Sources) Does Not Dim Or Increase Brightness
        • Notes
        • Normal Operation and Fault Conditions
        • Possible Sources
        • Pinpoint Test A: All DIMMABLE Illumination (Networked And Non-Networked Sources) Does Not Dim Or Increase Brightness
      • All Dimmable Non-Networked Illumination Is Inoperative (Networked Illumination Functions Correctly)
        • Notes
        • Normal Operation and Fault Conditions
        • Possible Sources
        • Pinpoint Test B: All DIMMABLE Non-Networked Illumination Is Inoperative (Networked Illumination Functions Correctly)
      • All Dimmable Non-Networked Illumination Is Always On (Networked Illumination Functions Correctly)
        • Notes
        • Normal Operation and Fault Conditions
        • Possible Sources
        • Pinpoint Test C: All DIMMABLE Non-Networked Illumination Is Always On (Networked Illumination Functions Correctly)
      • The Steering Wheel Switch(es) Illumination Is Inoperative
        • Diagnostic Overview
        • Normal Operation and Fault Conditions
        • Possible Sources
        • Pinpoint Test D: The Steering Wheel Switch(Es) Illumination Is Inoperative
      • One Or More Switch Or Component Illumination Is Inoperative
        • Notes
        • Normal Operation and Fault Conditions
        • Possible Sources
        • Pinpoint Test E: One Or More Switch Or Component Illumination Is Inoperative
      • The Start-Stop Switch Illumination Is Inoperative or Always On (vehicles with push button start)
        • Notes
        • Normal Operation and Fault Conditions
        • Possible Sources
        • Pinpoint Test F: The Start-Stop Switch Illumination Is Inoperative Or Always On (Vehicles With Push Button Start)
      • The FCIM Illumination Is Inoperative/Does Not Dim (Without Touchscreen Display)
        • Diagnostic Overview
        • Normal Operation and Fault Conditions
        • Possible Sources
        • Pinpoint Test G: The FCIM (Front Controls Interface Module) Illumination Is Inoperative/Does Not Dim (Without Touchscreen Display)