Rear Vision Camera System Malfunction (UVB without UV2)

Rear Vision Camera System Malfunction (UVB without UV2) Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach Diagnostic Procedure Instructions provides an overview of each diagnostic category Circuit/System Description When the transmission is placed into REVERSE, a signal is sent to the Info Display Module indicating that camera operation is requested. The rearview camera sends video information to the Radio through a coax cable. The coax cable also provides power from the Radio to the rearview camera. The Radio then sends the video information to the Radio Control through another coax cable. Diagnostic Aids 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 Image Display Camera Schematics Connector End View Reference Master Electrical Component List Description and Operation Rear Vision Camera Description and Operation Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References for scan tool information Circuit/System Verification

1. Verify A22 Radio Control displays infotainment system information properly. ⇒ If infotainment system information does not display properly Refer to Symptoms - Entertainment. ⇓ If infotainment system information displays properly
2. Verify there is no debris on the B87 Rearview Camera lens and that the bezel and bezel seal are not damaged. ⇒ If debris is found on the lens Clean the lens using water and a soft cloth. If the lens, bezel, or bezel seal are damaged, replace as necessary. ⇓ If there is no debris on the lens
3. Engine running, parking brake applied, transmission in REVERSE.
4. Verify the backup lamps are illuminated. ⇒ If the backup lamps are not illuminated Refer to Backup Lamps Malfunction. ⇓ If the backup lamps are illuminated
5. Engine running, parking brake applied, transmission in REVERSE.

Note

A poor quality image is an image that has flickering, blinking, excessively blue/yellow hue, and/or fog/haze such that it obstructs the driver’s view out the rear of the vehicle.

6. Verify a clear rear vision image is displayed on the A22 Radio Control . ⇒ If a clear image is not displayed Refer to Circuit/System Testing. ⇓ If a clear image is displayed
7. All OK. Circuit/System Testing
8. Ignition/Vehicle & All vehicle systems » Off
9. Disconnect the electrical connector: X5 @ A11 Radio
10. Wait for greater than 5 s.
11. Connect appropriate EL-52552 pinout tool to A11 Radio
12. Ignition » On / Vehicle » In Service Mode
13. Test for 7 to 11 V between the test points: Signal circuit terminal OG @ A11 Radio & Ground (component side) ⇒ If not between 7 and 11 V Replace the component: A11 Radio ⇓ If between 7 and 11 V
14. Ignition/Vehicle & All vehicle systems » Off

Note

Before testing the coax cable, check the cable’s exterior for being pinched, cut, damaged, or having loose connections at the components, all of which can cause reception issues.

8. Disconnect the electrical connector: B87 Rearview Driver Information Camera
9. Locate the appropriate pinout adapter and load test loop adapter from EL-52552 COAX FAKRA Cable Adaptor Kit.
10. Connect the 2 adapters together, measure and record the resistance between the terminals at the pinout adapter.
11. Disconnect the 2 adapters and connect each one to the appropriate end of the coax cable.
12. At the pinout adapter test terminals, measure the total resistance of the coax cable loop including the connected load test adapter. ⇒ If not within 5 Ω of the reading from step 10. Replace the coax cable ⇓ If within 5 Ω of the reading from step 10.
13. Replace the component: B87 Rearview Driver Information Camera
14. Apply the parking brake.
15. Engine Running Transmission in Reverse
16. Verify the DTC does not set. ⇒ If the DTC is set Replace the component: A11 Radio ⇓ If the DTC is not set
17. All OK. Repair Instructions Perform the Diagnostic Repair Verification after completing the repair procedure. Rearview Driver Information Camera Replacement Control Module References for control module replacement, programming, and setup.