Volt

Rear Vision Camera System Malfunction

When the transmission is placed into REVERSE, a 12 V signal is sent to the rearview camera indicating that camera operation is requested. Ignition voltage and ground are supplied to the rearview camera. The rearview camera sends video information to the radio 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.

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.

Schematic Reference

Object Detection Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Object Detection Description and Operation : UVC → UD5

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

1. Verify that DTC B2545 is not present.

⇒	If DTC is present, refer to DTC B2545 .

2. Inspect the rearview camera and verify there is no debris on the lens and that the bezel or bezel seal is not damaged.

⇒	If debris is found on the lens, clean the lens. If the lens, bezel, or bezel seal are damaged, replace as necessary.

3. Vehicle ON and in PARK, verify the reversing lamps are off.

⇒	If the reversing lamps are illuminated, refer to Reverse Lamps Malfunction .

4. Vehicle ON, transmission in REVERSE, verify the reversing lamps are on.

⇒	If the reversing lamps are not illuminated, refer to Reverse Lamps Malfunction .

5. Vehicle ON, transmission in REVERSE, verify a clear rear vision image is displayed on the radio.

⇒	If a clear image is not displayed, refer to Circuit/System Testing.

Note: Circuit/System Verification must be performed before Circuit/System Testing.

1. Vehicle OFF, disconnect the harness connector at the rearview camera.
2. Test for less than 5 Ω between the ground circuit terminal 5 and ground.

⇒	If greater than the specified value, test the ground circuit for an open/high resistance.

3. Vehicle in Service Mode, 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. Vehicle ON, 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. Vehicle OFF, disconnect the X4 harness connector at the A11 Radio.
6. Vehicle in Service Mode, test for less than 0.3 V between the following signal circuit terminals at the 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.

7. Test for infinite resistance between the following circuit terminals at the 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.

8. Test for less than 5 Ω between the signal (+) circuit terminal 1 at the rearview camera harness connector and the signal (+) circuit terminal 5 X4 at the A11 Radio harness connector.

⇒	If greater than the specified value, test the signal circuit for an open/high resistance.

9. Test for less than 5 Ω between the signal (-) circuit terminal 4 at the rearview camera harness connector and the signal (-) circuit terminal 15 X4 at the A11 Radio harness connector.

⇒	If greater than the specified value, test the signal circuit for an open/high resistance.

10. If all circuits test normal, replace the rearview camera.
11. Vehicle ON, transmission in REVERSE, verify a clear rear vision image is displayed on the radio.

⇒	If a clear rear vision image is not displayed, replace the A11 Radio.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.