Lighting And Signaling Systems

• Technical data
  • Specifications for Tightening Fasteners
  • Fastener Tightening Specifications
• Technical description
  • Horns System Description and Operation
    • System Description
    • System Operation
    • Circuit Operation
  • Exterior Lighting System, Description and Operation
    • Exterior lighting
    • Dipped beam (standard) RPO TT4
    • Dipped beam headlamp with high-intensity discharge (HID) (upgraded) RPO TT2/TT6
      • Notes
      • Inrush current to the lamp
      • When to replace the HID lamp
      • Light colour
    • Adaptive headlamp
      • Notes
      • Dynamic bend light
      • Bend light
      • Town light
      • Motorway light
      • Country light
      • Tourist mode
      • Adverse weather lighting
    • Automatic headlamp control
    • Main-beam flash (standard) RPO TT4
    • Main beam flash (level Up) RPO TT2
    • Main beam flash (level Up) RPO TT6
    • Automatic headlamp levelling
    • Daytime running lights (DRL) without HID RPO TT4
    • Daytime running lights (DRL) with HID RPO TT2/TT6
    • Front fog light
    • Rear fog light
    • Parking lamp, tail lamp, number plate lighting and marker lamp
    • Direction indicators
    • Hazard warning lights
    • Brake light
    • Reversing light
    • Battery discharge protection/auxiliary consumer
  • Interior Lighting Systems Description and Operation
    • Interior Lamps
    • Courtesy/Illuminated Entry Lamps
    • Keyless Entry Interior Illumination
    • Interior Lamps Dimming
    • Inadvertent Power
• Fault diagnosis, fault codes
  • Lighting and Signalling System DTC Index
  • DTC B2750: Horn Relay Secondary Circuit
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B0655: Brake Lamp Switch Circuit Not Plausible
    • Diagnostic Instructions
    • DTC Descriptor
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Repair Instructions
  • DTC B096F: Power Mode Switch Assembly Backlight Circuit
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B0984: Left Headlamp Light Distribution Shutter Control Circuit Malfunction or B0985:Right Headlamp Light Distribution Shutter Control Circuit Malfunction
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B1461: Left Headlamp Horizontal Motor Circuit Malfunction or B1462: Right Headlamp Horizontal Motor Circuit Malfunction
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Testing
    • Repair Instructions
  • DTC B1480: Battery Rundown Protection Circuit Short to Ground
    • Diagnostic Instructions
    • DTC Descriptor
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Repair Instructions
  • DTC B2530: Front Fog Lamps Control Circuit Short to Battery
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B2540: Rear Fog Lamps Control Circuit
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B2545: Backup Lamps Circuit Short to Ground
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B255D: Passenger Compartment Lamp Control 2 Circuit Short to Ground
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B2570: Trunk Lamp Control Circuit Short to Ground
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B2575: Left Headlamp Control Circuit or B2699: Right Headlamp Control Circuit
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B257A: Headlamp Switch Input Signals Correlation Malfunction
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
      • Static Test
    • Repair Instructions
  • DTC B257B: Lighting Control Switch Signal
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B257C: Left Headlamp Assembly Malfunction or B257D: Right Headlamp Assembly Malfunction
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
      • Relay Test
    • Repair Instructions
  • DTC B2580: High Beam Control Circuit Short to Battery
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B2585: Left Park Lamps Control Circuit Short to Ground or B3867: Right Park Lamp Control Circuit Short to Ground
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B258A: Low Beam Control Circuit Short to Battery
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B2590: Left Cornering Lamp Circuit or B2595: Right Cornering Lamp Circuit
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B260A: Backlight and Display Dimming Request Circuit Malfunction
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B260D: Left Daytime Running Lamp and Front Park Lamp Control Circuit Short to Ground or B260E: Right Daytime Running Lamp and Front Park Lamp Control Circuit Short to Ground
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B2610: Passenger Compartment Dimming 1 Circuit Short to Ground
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B2615: Passenger Compartment Dimming 2 Circuit Short to Ground
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B2625: Display Dimming Pulse Width Modulation Output Circuit Short to Ground
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B2645: Ambient Light Sensor Circuit
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
      • Dynamic Test
    • Repair Instructions
  • DTC B2652: Passenger Compartment Dimming 3 Circuit Short to Ground
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B2740: Front Fog Lamp Switch Circuit Malfunction
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B3410: Automatic Headlamp Leveling Control Module Front Axle Sensor Signal Circuit or B3420: Automatic Headlamp Leveling Control Module Rear Axle Sensor Signal Circuit
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B3415: Automatic Headlamp Leveling Control Module Axle Sensor Supply Circuit
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Testing
    • Repair Instructions
  • DTC B3588: Rear Fog Lamp Switch Circuit Malfunction
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
      • Static Test
    • Repair Instructions
  • DTC B3596: Hazard Lamps Request Circuit Malfunction
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
      • Static Test
    • Repair Instructions
  • DTC B3650: High Beam Request Signal Circuit Performance
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
      • Static Test
    • Repair Instructions
  • DTC B3806: High Beam and Headlamp Flash Select Circuit Malfunction
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
      • Static Test
    • Repair Instructions
  • DTC B3881: Tail Lamp Circuit Short to Ground or B3882: Right Tail Lamp Circuit Short to Ground
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B3883: License Plate Lamp Circuit
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B3884: High-Level, Centre Brake Light Circuit
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B3885: Trailer Left Tail Lamp Circuit or B3886: Trailer Right Tail Lamp Circuit
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Conditions for Clearing the DTC
    • Action Taken When the DTC Sets
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B3887: Trailer Left Turn Signal Circuit or B3888: Trailer Right Turn Signal Circuit
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B3889: Trailer Brake Lamps Circuit
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Conditions for Clearing the DTC
    • Action Taken When the DTC Sets
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B388B: Secondary Left Tail and Brake Lamp Circuit or B388C: Secondary Right Tail and Brake Lamp Circuit
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Conditions for Clearing the DTC
    • Action Taken When the DTC Sets
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B3890: Trailer Backup Lamps Circuit
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Conditions for Clearing the DTC
    • Action Taken When the DTC Sets
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B3891: Trailer Fog Lamps Circuit
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Conditions for Clearing the DTC
    • Action Taken When the DTC Sets
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B3948: Left Front Turn Signal Circuit or B3949: Right Front Turn Signal Circuit
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC B3950: Left Rear Turn Signal Circuit or B3951: Right Rear Turn Signal Circuit
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC C0010: Reverse Gear Signal Circuit Not Plausible
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
      • Static Test
    • Repair Instructions
  • DTC C0166: Traction Control System Brake Switch Circuit Malfunction
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • DTC C0277: Brake Pedal Position Sensor Circuit or C0890: Control Module Voltage Reference Output 3 Circuit
    • Diagnostic Instructions
    • DTC Descriptors
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Diagnostic Aids
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
      • Static Test
      • Dynamic Test
    • Repair Instructions
  • DTC C0297: Brake Applied Output Circuit Short to Ground
    • Diagnostic Instructions
    • DTC Descriptor
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
• Fault diagnosis, symptoms
  • Symptoms - Horns
    • Notes
    • Visual/Physical Inspection
    • Intermittent
    • Symptom List
  • Horns Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
      • Horns or Horn Command Malfunction
      • Horn - Poor Tone
      • Horn Switch Malfunction
    • Component Testing
      • Horn Test
    • Repair Instructions
  • Symptoms - Lighting
    • Notes
    • Visual/Physical Inspection
    • Intermittent
    • Symptom List
  • Adaptive Forward Lighting Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Testing
    • Repair Instructions
  • Automatic Light Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
      • Static Test
    • Repair Instructions
  • Backup Lamps Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
      • Static Test
    • Repair Instructions
  • Courtesy Lamps Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
      • Courtesy Lamp Circuit Malfunction
      • Sunroof Console Dome Lamp Switch Malfunction
    • Repair Instructions
  • Daytime Running Lamps Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
      • Dynamic Test
    • Repair Instructions
  • Dome Lamps Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
      • Dome Lamp Switch Malfunction
    • Repair Instructions
  • Front Fog Lamps Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
      • Front Fog Lamps Malfunction
      • Front Fog Lamp Switch Malfunction
      • Front Fog Indicator Malfunction
    • Repair Instructions
  • Rear Fog Lamps Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
      • Rear Fog Lamp Switch Malfunction
      • Rear Fog Indicator Malfunction
      • Rear Fog Lamps Malfunction
    • Repair Instructions
  • Glove Box Illumination Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
      • Instrument Panel Compartment Lamp Circuit Malfunction
    • Repair Instructions
  • Hazard Lamps Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Testing
      • Hazard Lamps Malfunction
      • Hazard Switch Indicator Malfunction
      • Hazard Lamp Indicators Malfunction
    • Repair Instructions
  • High Intensity Discharge Lamp Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Testing
    • Repair Instructions
  • High Mount Stop Lamp Inoperative
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
      • Brake Pedal Position Sensor Malfunction
      • Centre High Mounted Brake Lamp Malfunction
    • Repair Instructions
  • Headlamps Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
      • Notes
      • With High Intensity Discharge (HID) Headlamps RPO TT2
      • With High Intensity Discharge (HID) Headlamps RPO TT6
      • Without High Intensity Discharge (HID) Headlamps RPO TT4
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
      • Headlamp Switch Malfunction
      • Turn Signal/Multifunction Switch Malfunction
      • Low Beam Headlamp Malfunction - with HID Headlamps RPO TT2/TT6
      • Low Beam Headlamp Malfunction - without HID Headlamps RPO TT4
      • High Beam Headlamp Malfunction - without HID Headlamps RPO TT4
      • High Beam Headlamp Malfunction - with HID Headlamps RPO TT6
    • Component Testing
      • Headlamp Switch - Static Test
      • Turn Signal/Multifunction Switch
    • Repair Instructions
  • Headlamp Leveling Malfunction (TR6)
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Component Testing
      • Static Test
    • Repair Instructions
  • Headlamp Leveling Malfunction (TT6 TT2)
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Testing
    • Repair Instructions
  • Interior Accent Lighting Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Conditions for Running the DTC
    • Conditions for Setting the DTC
    • Action Taken When the DTC Sets
    • Conditions for Clearing the DTC
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
    • Repair Instructions
  • Interior Backlighting Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
      • Dimmer Switch Circuit Test
      • Interior Backlighting Circuit Test
    • Repair Instructions
  • Lights On Indicator Malfunction
    • Diagnostic Instructions
    • Circuit/System Description
    • Diagnostic Aids
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Testing
      • Lights On Indicator Malfunction
      • High Beam Indicator Malfunction
    • Repair Instructions
  • Park, License, and/or Tail Lamps Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
      • Park Lamp Switch Malfunction
      • Park Lamps Inoperative
      • License Plate Lights Inoperative
    • Repair Instructions
  • Reading Lamps Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
      • Reading Lamps Circuit Malfunction
    • Repair Instructions
  • Stop Lamps Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
      • Brake Pedal Position Sensor Malfunction
      • Brake Lamp Malfunction
    • Repair Instructions
  • Sunshade Illumination Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
      • Sunshade Light Circuit Malfunction
    • Repair Instructions
  • Turn Signal Lamps and/or Indicators Malfunction
    • Diagnostic Instructions
    • Diagnostic Fault Information
    • Circuit/System Description
    • Reference Information
      • Schematic Reference
      • Connector End View Reference
      • Description and Operation
      • Electrical Information Reference
      • Scan Tool Reference
    • Circuit/System Verification
    • Circuit/System Testing
      • Turn Signal Switch Malfunction
      • Turn Signal Lamps Malfunction
      • Turn Signal Indicators Malfunction
    • Component Testing
      • Turn Signal Switch
    • Repair Instructions
• Adjustment Replacement
  • Time studies - Lighting
    • Notes
    • Correction
    • Location (pos)
  • Horn Replacement
  • Steering Wheel Horn Switch Replacement
  • Brake Pedal Position Sensor Calibration
    • Calibration Criteria
    • Calibration Procedure
  • Brake Pedal Position Sensor Replacement
  • Headlamp Switch Replacement
  • Trailer Lamp Control Module Replacement
  • Hazard Warning Switch Replacement
  • Instrument Panel Lamp Dimmer Switch Replacement
  • Windshield Outside Moisture and Headlamp Automatic Control Ambient Light Sensor Replacement
  • Reading Lamp Bulb Replacement
  • Reading Lamp Replacement
  • Dome and Reading Lamp Replacement
  • Dome and Reading Lamp Lens Replacement
  • Front Side Door Courtesy Lamp Lens Replacement
  • Front Floor Flood Lamp Replacement
  • Instrument Panel Compartment Lamp Replacement
  • Sunshade Illuminated Mirror Lamp Bulb Replacement
  • Dome Lamp Bulb Replacement
  • Front Side Door Sill Courtesy Lamp Replacement
  • Outside Rearview Mirror Turn Signal Lamp Replacement
  • Headlamp Replacement
  • Headlamp Ballast Replacement
  • Headlamp Bulb Replacement (Xenon - Left Side)
  • Headlamp Bulb Replacement (Xenon - Right Side)
  • Headlamp Bulb Replacement (High Beam)
  • Headlamp Bulb Replacement (Low Beam)
  • Headlamp Levelling Actuator Replacement (Halogen)
    • Removal
    • Assemble
  • Headlamp Bracket Replacement
  • Headlamp Aiming (Base)
    • Visual Aiming Preparation Procedure
    • Headlamp Aiming Procedure
  • Headlamp Aiming (Check and Adjust)
  • Headlamp Leveling Front Suspension Height Sensor Replacement
  • Headlamp Leveling Front Suspension Height Sensor Exciter Plate Replacement
  • Headlamp Leveling Rear Suspension Height Sensor Replacement
  • Headlamp Control Module Replacement
  • Front Fog Lamp Replacement
  • Front Fog Lamp Bulb Replacement
  • Rear Fog Lamp Replacement
  • Rear Fog Lamp Bulb Replacement
  • Front Position Lamp Bulb Replacement
  • Front Side Marker Lamp Bulb Replacement
  • Front Side Turn Signal Lamp Replacement
  • Front Turn Signal Lamp Bulb Replacement
  • High-Level Brake Light, Replacement 4D
  • Rear License Plate Lamp, Replacement 4D
  • Rear License Plate Bulb, Replacement 4D
  • Tail Lamp, Replacement 4D
  • Bulb, Replacement 4D
  • Luggage Compartment Courtesy Lamp, Replacement 4D
• Component location
  • Master Electrical Component List
• Wiring diagram
  • Horn, diagram
  • Trailer connection
  • Headlamps/Daytime Running Lights (DRL), schematics
  • Fog lights, diagram
  • Exterior Lights, Schematics
  • Interior Lights, Schematics
  • Interior Lights Dimming, Schematics
  • Horn
    • Notes
    • List of components
  • Power supply, ground and serial data - with electrical center
    • Notes
    • List of components
  • Trailer connection - with electrical center
    • Notes
    • List of components
  • Power supply, ground and serial data - without electrical center
    • Notes
    • List of components
  • Trailer connection - without electrical center
    • Notes
    • List of components
  • Headlamps, controls
    • Notes
    • List of components
  • Position Lamps, High Beam and Low Beam Headlamps (TT4)
    • Notes
    • List of components
  • High Intensity Discharge Headlamps (TT2 or TT6)
    • Notes
    • List of components
  • Manual Headlamp Levelling (TR6)
    • Notes
    • List of components
  • Adaptive Forward Lighting (TT2 or TT6)
    • Notes
    • List of components
  • Fog Lamps
    • Notes
    • List of components
  • Exterior Lights, Controls
    • Notes
    • List of components
  • Position lights, side marker lights, brake lights, license plate lighting, direction indicators - left (TT2, TT6)
    • Notes
    • List of components
  • Position lights, side marker lights, brake lights, high-level brake lights, direction indicators - right (TT2, TT6)
    • Notes
    • List of components
  • Reversing light courtesy lamps
    • Notes
    • List of components
  • Interior lighting (1 of 2)
    • Notes
    • List of components
  • Interior lighting (2 of 2)
    • Notes
    • List of components
  • Accent Lamps
    • Notes
    • List of components
  • Control and Dimming (1 of 2)
    • Notes
    • List of components
  • Control and Dimming (2 of 2)
    • Notes
    • List of components
  • Indicators
    • Notes
    • List of components
• Bulletins
  • Rear light fittings
    • Vehicles Concerned
    • Background
    • Action