Lighting And Signaling Systems
- Technical data
- Technical description
- Horns System Description and Operation
- Exterior Lighting Systems Description and Operation
- Exterior lamps
- Low Beam Headlamps (Standard) RPO TT4
- High Intensity Discharge (HID) Low Beam Headlamps (up level) RPO TT6
- Adaptive Forward Lighting (AFL)
- Automatic Lamp Control
- Flash to Pass (Standard) RPO TT4
- Flash to Pass (up level) RPO TT6
- Automatic Headlamp Leveling
- Daytime Running Lamps (DRL) without HID RPO TT4
- Daytime Running Lamps (DRL) with HID RPO TT6
- Front Fog Lamps
- Rear Fog Lamps
- Park, Tail, License and Marker Lamps
- Turn Signal Lamps
- Repeater Lamps
- Hazard Flasher Lamps
- Stop lamps
- Backup Lamps
- Battery Run Down Protection/Inadvertent Power
- Interior Lighting Systems Description and Operation
- Fault diagnosis, fault codes
- Lighting And Signalling Systems DTC Index
- DTC B2750: Horn Relay Secondary Circuit Short
- 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
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B0655: Brake Lamp Switch 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
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B096A: Hazard Lamps Switch Backlight 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
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B1480: Battery Rundown Protection Circuit Short to Ground
- DTC B2530: Front Fog Lamps Control Circuit Short to Ground
- DTC B2540: Rear Fog Lamps 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
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B2545: Backup Lamps 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
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B256A: Liftgate 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
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B2575: Left Headlamp Control Circuit; DTC B2699: Right Headlamp Control Circuit
- 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
- 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
- Circuit/System Verification
- Circuit/System Testing
- 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
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B257C: Left Headlamp Assembly Malfunction; DTC 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
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC B2580: High Beam Control Circuit Short to Ground
- DTC B2585: Park Lamps Control Circuit Short to Ground; DTC 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
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B258A: Low Beam Control Circuit
- 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
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC B2600: Left Daytime Running Lamps Control Circuit; DTC B2605: Right Daytime Running Lamps Control Circuit
- 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
- 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
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B260B: Left Daytime Running Lamp Relay Control Circuit; DTC B260C: Right Daytime Running Lamp Relay Control Circuit
- 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
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC B260D: Left Daytime Running Lamp and Front Park Lamp Control Circuit; DTC B260E: Right Daytime Running Lamp and Front Park Lamp Control Circuit
- 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
- 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
- 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
- Actions Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- 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
- Circuit/System Verification
- Circuit/System Testing
- 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
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B2657: Ignition Switch Halo Lamp 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
- 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
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B3410: Automatic Headlamp Leveling Control Module Front Axle Sensor Signal Circuit; DTC B3420: Automatic Headlamp Leveling Control Module Rear Axle Sensor Signal Circuit
- DTC B3415: Automatic Headlamp Leveling Control Module Axle Sensor Supply Circuit
- 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
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B3596: Hazard Lamps Request Circuit
- 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
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B364A: Surveillance Mode Switch Circuit Malfunction
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Action Taken When the DTC Sets
- Conditions for Setting the DTC
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC B3650: High Beam Request Signal Circuit Performance - Signal Invalid
- 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
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- 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
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- DTC B3881: Tail Lamp Circuit; DTC B3882: Right Tail 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
- 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
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B3884: Center High Mounted Brake 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
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B3885: Trailer Left Tail Lamp Circuit; DTC 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
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B3887: Trailer Left Turn Signal Circuit; DTC B3888: Trailer Right Turn Signal Circuit (With U4G)
- 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
- 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
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B388A: Trailer Park Lamps Circuit
- 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
- Circuit/System Verification
- Circuit/System Testing
- Component 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
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- 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
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B3948: Left Front Turn Signal Circuit Short to Ground; DTC B3949: Right Front Turn Signal 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
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B3948: Left Front Turn Signal Circuit Short to Ground; DTC B3949: Right Front Turn Signal Circuit Short to Ground; DTC B3950: Left Rear Turn Signal Circuit Short to Ground; DTC B3951: Right Rear Turn Signal 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
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC C0277: Brake Pedal Position Sensor Circuit; DTC C0890: Control Module Voltage Reference Output
- DTC C0297: Brake Applied Output Circuit Short to Ground
- Fault diagnosis, symptoms
- Symptoms - Horns
- Horns Malfunction
- Symptoms - Lighting
- Adaptive Forward Lighting Malfunction
- Backup Lamps Malfunction
- Courtesy Lamps Malfunction
- Daytime Running Lamps Malfunction
- Front Fog Lamps Malfunction
- Rear Fog Lamps Malfunction
- Hazard Lamps Malfunction
- High Intensity Discharge Lamp Malfunction
- Headlamps Malfunction
- Headlamp Leveling Malfunction (RPO T84 or T85)
- Headlamp Leveling Malfunction (RPO TT6, TT7 or TT8)
- Interior Accent Lighting Malfunction
- Interior Backlighting Malfunction
- Park, License, and/or Tail Lamps Malfunction
- Stop Lamps Malfunction
- Trailer Lamps Malfunction (With U4G)
- Turn Signal Lamps and/or Indicators Malfunction
- Adjustment Replacement
- Time studies - Lighting
- Horn Replacement
- Steering Wheel Horn Contact Replacement
- Brake Pedal Position Sensor Calibration
- Brake Pedal Position Sensor Replacement
- Sun Load Temperature and Daytime Running Lamp Ambient Light Sensor Replacement
- Headlamp Switch Replacement
- Door Lock and Hazard Warning Switch Replacement
- Dimmer Switch Replacement
- Reading Lamp Switch Pushbutton Replacement
- Dome and Reading Lamp Switch Replacement
- Dome Lamp Lens Replacement
- Front Floor Console Flood Lamp Replacement
- Instrument Panel Compartment Lamp Replacement
- Instrument Panel Compartment Lamp Bulb Replacement
- Roof Rail Courtesy and Reading Lamp Replacement
- Transmission Control Position Indicator Lamp Replacement
- Headlamp Replacement (T84 T85)
- Headlamp Replacement (TT6 HID)
- Headlamp Bulb Replacement - Left Side (T84 T85 High Beam)
- Headlamp Bulb Replacement - Left Side (T84 T85 Low Beam)
- Headlamp Bulb Replacement - Right Side (High Beam T84 T85)
- Headlamp Bulb Replacement - Right Side (Low Beam T84 T85)
- Headlamp Ballast Replacement
- Headlamp Ignitor Replacement (TT6 Left Hand)
- Headlamp Capsule Replacement
- Headlamp Aiming
- Headlamp Leveling Front Suspension Height Sensor Replacement
- Headlamp Leveling Rear Suspension Height Sensor Replacement
- Headlamp Control Module Replacement
- Front Fog Lamp Replacement
- Fog Lamp Aiming
- Daytime Running Lamp Bulb Replacement (TT6 Left Side)
- Front Side Turn Signal Lamp Replacement
- Front Turn Signal Lamp Bulb Replacement (TT6 Right Hand Bulb)
- Front Turn Signal Lamp Bulb Replacement (TT6 Left Hand Bulb)
- Auxiliary Side Front Turn Signal Lamp Bulb Replacement (T84 T85 Right Hand Bulb)
- Auxiliary Side Front Turn Signal Lamp Bulb Replacement (T84 T85 Left Hand Bulb)
- High Mount Stop Lamp Replacement
- Backup Lamp Bulb Replacement
- Backup and Rear Fog Lamp Replacement
- Rear License Plate Lamp Replacement
- Tail Lamp Replacement
- Stop and Tail Lamp Bulb Replacement
- Rear Turn Signal Lamp Bulb Replacement
- Rear Compartment Courtesy Lamp Replacement - Liftgate
- Rear Compartment Courtesy Lamp Replacement - Quarter Upper Trim
- Wiring diagram