Front View Camera Module Malfunction
Front View Camera Module Malfunction
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.
Circuit/System Description
The lane departure warning is enabled and disabled through a switch located in the instrument panel. When the switch is pressed once, the frontview camera module disables or enables the lane departure warning. When the lane departure warning system is enabled the frontview camera module will illuminate the indicator in the switch.
When the system is operating and can detect the lane markings, the frontview camera module will request via serial data communications that the instrument cluster illuminate. If the frontview 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 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 indicator will not appear when the system is having difficulty seeing the lines on the road or if the view of the frontview 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 Frontview Camera Disable History can give useful hints about what affected the operation of the lane departure warning system. For the Vehicle Direction Camera Disable History, 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 Front
Description and Operation
Object Detection Description and Operation (UD7) Object Detection (UD7)Object Detection Description and Operation (Front View Camera with UEU) Object Detection Description and Operation (Front View Camera with UEU)Object Detection Description and Operation (Front View Camera with UFL) Object Detection Description and Operation (Front View Camera with UFL)Object Detection Description and Operation (UVC) Object Detection (UVC)
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
1. Ignition ON.
2. Verify 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 On and Off
Refer to Lane Departure Warning Switch Malfunction in Circuit/System Testing.
• If the parameter changes between On and Off
3. Verify the area of the K74 Vehicle Direction Camera Control Module for contamination.
• If it needs to be cleaned
Clean the windshield.
• If it does not need to be cleaned
4. All OK.
Circuit/System Testing
1. Remove the ignition key, open the driver door and disconnect the scan tool, all vehicle systems OFF, this may take up to 2 min. Disconnect the harness connector at the K74 Vehicle Direction Camera Control Module.
2. Test for less than 10 ohms between the ground circuit terminal 1 and ground.
• If 10 ohms or greater
1. Test for less than 2 ohms in the ground circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, repair the open/high resistance in the ground connection.
• If less than 10 ohms
3. Verify a test lamp illuminates between the B+ circuit terminal 3 and ground.
• If the test lamp does not illuminate and the circuit fuse is good
1. Ignition OFF.
2. Test for less than 2 ohms in the B+ circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, verify the fuse is not open and there is voltage at the fuse.
• If the test lamp does not illuminate and the circuit fuse is open
1. Ignition OFF, disconnect the harness connector X2 at the X50A Fuse Block Underhood.
2. Test for infinite resistance between the B+ circuit and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance, replace the K74 Vehicle Direction Camera Control Module.
• If the test lamp illuminates
4. Disconnect the harness connector at the S48D Multifunction Switch 2 - Instrument Panel.
5. Test for less than 10 ohms between the ground circuit terminal 1 and ground.
• If 10 ohms or greater
1. Test for less than 2 ohms in the ground circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, repair the open/high resistance in the ground connection.
• If less than 10 ohms
6. Connect the harness connector at the S48D Multifunction Switch 2 - Instrument Panel and at the K74 Vehicle Direction Camera Control Module.
7. Verify the scan tool Lane Departure Warning Switch Status parameter is Off.
• If not Off
1. Ignition OFF, disconnect the harness connector at the S48D Multifunction Switch 2 - Instrument Panel.
2. Test for infinite resistance between the signal circuit terminal 4 and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance, replace the K74 Vehicle Direction Camera Control Module.
• If Off
8. Install a 3 A fused jumper wire between the signal circuit terminal 4 and ground circuit terminal 1.
9. Verify within 10 s the scan tool Lane Departure Warning Switch Status parameter is On.
• If not On
1. Ignition OFF. Disconnect the harness connector at the K74 Vehicle Direction Camera Module, ignition ON.
2. Test for less than 1 V between the signal circuit terminal 4 at the S48D Multifunction Switch 2 - Instrument Panel and ground.
• If greater than 1 V, repair the short to voltage in the circuit.
• If less than 1 V.
3. Ignition OFF.
4. Test for less than 2 ohms in the signal circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, replace the K74 Vehicle Direction Camera Module.
• If On
10. All OK.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
Control Module References Control Module References for Frontview Camera Module replacement, programming and setup.