Front View Camera Module Malfunction (UFL)
Front View Camera Module Malfunction (UFL)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.
Diagnostic Fault Information
Circuit/System Description
The lane departure warning system is controlled by the front view camera module mounted on the windshield. The lane departure warning is enabled and disabled through a switch located in the multifunction switch at the instrument panel. When enabled, the front view camera module will illuminate the indicator located in the switch.
When the system is operating and can detect the lane markings, the front view camera module will request via serial data communications that the instrument cluster illuminates the green lane departure ready-to-assist indicator. If the front view camera module detects that the vehicle unintentionally crosses a lane marking without the turn signal being used, the module will request the instrument cluster to flash the amber lane departure warning indicator. An audible warning will also sound three times when the amber lane departure warning indicator in the instrument cluster is flashing.
Diagnostic Aids
Certain factors will affect the operation of the lane departure warning system. When the system is operating properly, the green lane departure warning indicator will illuminate on the instrument cluster. This indicates that all of the required operating conditions to permit lane departure warning have been met. The green lane departure warning indicator will not appear when the system is having difficulty seeing the lines on the road or if the view of the front view camera is blocked with mud, dirt, snow, ice, or slush, if the windshield is damaged, or when weather limits visibility, such as while driving in fog, rain, or snow conditions. This is normal operation, the vehicle does not need service. Additionally, lane departure warnings may occasionally occur in a properly operating vehicle due to tar marks, shadows, cracks in the road, or other road imperfections. This is normal system operation and the vehicle does not require service. The driver information center may also display Lane Departure System Unavailable due to the temporary conditions listed above.
Additionally, the Front View Camera Disable History can give useful hints about what affected the operation of the lane departure warning system. For the Front View Camera Disable History, please refer to DTC B1011 B1011.
Reference Information
Schematic Reference
Object Detection Schematics [1][2]Collision Avoidance and Parking Assist Systems
Connector End View Reference
Component Connector End Views Sunshade - Left (DH6)
Description and Operation
Object Detection Description and Operation (UD7) Object Detection (UD7)Object Detection Description and Operation (Accessory Dealer Installed) Object Detection Description and Operation (Accessory Dealer Installed)Object Detection Description and Operation (UVC) Object Detection (UVC)Object Detection Description and Operation (UFT) Object Detection (UFT)Object Detection Description and Operation (Front View Camera with UFL) Object Detection Description and Operation (Front View Camera with UFL)
Electrical Information Reference
* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs
Scan Tool Reference
Control Module References Control Module References for scan tool information
Circuit/System Verification
Note:
Refer to Diagnostic Aids before performing Circuit/System Verification.
1. Observe the scan tool Lane Departure Warning Switch Status parameter while pressing the lane departure warning switch. The parameter should change between ON and OFF.
• If the parameter does not change between the specified values, refer to Lane Departure Warning Switch Malfunction in Circuit/System Testing.
2. Observe the switch indicator while cycling the lane departure warning switch. The indicator should turn ON and OFF when cycling between the commanded states.
• If the indicator does not turn ON and OFF, refer to Lane Departure Warning Switch Indicator Malfunction in Circuit/System Testing.
3. Inspect the area of the K109 Front View Camera Module for contamination.
• If it needs to be cleaned, clean the windshield.
Circuit/System Testing
Lane Departure Warning Switch Malfunction
1. Ignition OFF, remove the ignition key, open the driver door and disconnect the scan tool, all vehicle systems OFF, this may take up to 2 min.
2. Disconnect the harness connector at the S48D Multifunction Switch 2 - Instrument Panel.
3. Test for less than 5 ohms between the S48D Multifunction Switch 2 - Instrument Panel ground circuit terminal 2 and ground.
• If greater than the specified value, test the ground circuit for an open/high resistance.
4. Ignition ON, verify the scan tool Lane Departure Warning Switch Status parameter is OFF.
• If not the specified value, test the signal circuit terminal 5 for a short to ground. If the circuit tests normal, replace the K109 Front View Camera Module.
5. Install a 3 A fused jumper wire between the signal circuit terminal 5 and ground circuit terminal 2. Verify within 10 s the scan tool Lane Departure Warning Switch Status parameter is ON.
• If not the specified value, test the signal circuit terminal for a short to battery or an open/high resistance. If the circuit tests normal, replace the K109 Front View Camera Module.
6. If all circuits test normal, replace the S48D Multifunction Switch 2 - Instrument Panel.
Lane Departure Warning Switch Indicator Malfunction
1. Ignition OFF, remove the ignition key, open the driver door and disconnect the scan tool, all vehicle systems OFF, this may take up to 2 min.
2. Disconnect the harness connector at the S48D Multifunction Switch 2 - Instrument Panel.
3. Test for less than 5 ohms between the S48D Multifunction Switch 2 - Instrument Panel ground circuit terminal 2 and ground.
• If greater than the specified value, test the ground circuit for an open/high resistance.
4. Disconnect the harness connector at the K109 Front View Camera Module, reconnect the harness connector at the S48D Multifunction Switch 2 - Instrument Panel.
5. Ignition ON, observe the lane departure warning switch indicator. The indicator should be OFF.
• If the indicator is always ON, test the control circuit terminal 4 for a short to voltage. If the circuit tests normal, replace the S48D Multifunction Switch 2 - Instrument Panel.
6. Ignition OFF, install a 3 A fused jumper wire between the K109 Front View Camera Module harness connector indicator control circuit terminal 4 and B+. The indicator should be ON.
• If the indicator is always OFF, test the control circuit terminal 4 for an open/high resistance. If the circuit tests normal, replace the S48D Multifunction Switch 2 - Instrument Panel.
7. If all circuits test normal, replace the K109 Front View Camera Module.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
Control Module References Control Module References for front view camera replacement, programming and setup