Rear Vision Camera System Malfunction
Rear Vision Camera System 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
When the transmission is placed into REVERSE, a 12 V signal is sent to the inside rearview mirror and rearview camera indicating that camera operation is requested. Ignition voltage and ground are supplied to the rearview camera. The inside rearview mirror is supplied a common ignition voltage and ground source that is shared with other mirror operations. The rearview camera sends video information to the inside rearview mirror through a video signal + and a video signal - circuit. A grounded shielding also wraps the video signal circuits to reduce electronic interference which may degrade the video signal and cause a distorted or otherwise degraded image.
Diagnostic Aids
If the vehicle is remote started in low ambient light conditions and the unlock button on the transmitter is activated, the rearview camera display will activate in the rearview mirror. This is considered normal operation and no attempt should be made at correction.
A poor video image can be caused by ice, snow, and mud buildup on the lens of the rearview camera. Also, extreme lighting conditions can affect performance, such as operating in the dark or with bright sunlight shining on the camera. Extreme high or low temperatures can also affect the image quality. An open in the shield of the video signal circuit can also cause a distorted screen.
Reference Information
Schematic Reference
Object Detection Schematics [1][2]Collision Avoidance and Parking Assist Systems
Connector End View Reference
Component Connector End Views Fuel Pump and Level Sensor Assembly - Primary
Description and Operation
Object Detection Description and Operation (without UVC) Object Detection Description and Operation (without UVC)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. Inspect the B87 Rearview Camera and verify there are no debris on the lens and that the bezel or bezel seal is not damaged.
• If debris are found on the lens, clean the lens. If the lens, bezel, or bezel seal are damaged, replace as necessary.
2. Ignition ON, vehicle in PARK, verify the backup lamps are off.
• If the backup lamps are illuminated, refer to Backup Lamps Malfunction (Automatic Transmission) Backup Lamps Malfunction (Automatic Transmission)Backup Lamps Malfunction (Manual Transmission) Backup Lamps Malfunction (Manual Transmission).
3. Transmission in REVERSE, verify the backup lamps are on.
• If the backup lamps are not illuminated, refer to Backup Lamps Malfunction (Automatic Transmission) Backup Lamps Malfunction (Automatic Transmission)Backup Lamps Malfunction (Manual Transmission) Backup Lamps Malfunction (Manual Transmission).
4. Engine running, transmission in REVERSE, verify a clear rear vision image is displayed on the inside rearview mirror.
• If a clear image is not displayed, refer to Circuit/System Testing.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the B87 Rearview Camera.
2. Test for less than 5 ohms between the ground circuit terminal 5 and ground.
• If greater than the specified value, test the ground circuit for an open/high resistance.
3. Ignition ON, verify a test lamp illuminates between the ignition circuit terminal 6 and ground.
• If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
4. Engine running, park brake applied, transmission in REVERSE, test for greater than 11 V between the control circuit terminal 3 and ground.
• If less than the specified value, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K9 Body Control Module.
5. Ignition OFF, disconnect the harness connector at the A10 Inside Rearview Mirror.
6. Test for less than 5 ohms between the ground circuit terminal 5 and ground.
• If greater than the specified value, test the ground circuit for an open/high resistance.
7. Ignition ON, verify a test lamp illuminates between the ignition circuit terminal 10 and ground.
• If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
8. Test for less than 0.3 V between the following signal circuit terminals at the B87 Rearview Camera harness connector and ground:
* Signal (+) circuit terminal 1
* Signal (-) circuit terminal 4
• If greater than the specified value, test the signal circuit for a short to voltage.
9. Ignition OFF, test for infinite resistance between the following circuit terminals at the B87 Rearview Camera harness connector and ground:
* Signal (+) circuit terminal 1
* Signal (-) circuit terminal 4
• If not the specified value, test the circuit for a short to ground.
10. Test for infinite resistance between the shield ground circuit terminal 2 and ground.
• If less than the specified value, test the shield ground circuit for an short to ground.
11. Test for less than 5 ohms between the signal (+) circuit terminal 1 at the B87 Rearview Camera harness connector and the signal (+) circuit terminal 6 at the A10 Inside Rearview Mirror harness connector.
• If greater than the specified value, test the signal circuit for an open/high resistance.
12. Test for less than 5 ohms between the signal (-) circuit terminal 4 at the B87 Rearview Camera harness connector and the signal (-) circuit terminal 7 at the A10 Inside Rearview Mirror harness connector.
• If greater than the specified value, test the signal circuit for an open/high resistance.
13. If all circuits test normal, connect the harness connector to the A10 Inside Rearview Mirror and replace the B87 Rearview Camera.
14. Ignition ON, transmission in REVERSE, verify a clear rear vision image is displayed on the inside rearview mirror.
• If a clear rear vision image is not displayed, replace the A10 Inside Rearview Mirror.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
* Rearview Camera Image Display Module Replacement Service and Repair
* Control Module References Control Module References for body control module replacement, programming and setup