Rear Vision Camera System Malfunction (with navigation radio UYS)

Rear Vision Camera System Malfunction (with navigation radio UYS)

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 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.

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

Object Detection Schematics [1][2]Collision Avoidance and Parking Assist Systems

Connector End View Reference

Component Connector End Views 1-2 Shift Solenoid (SS) Valve (M30)

Description and Operation

Object Detection Description and Operation (UD7) Object Detection Description and Operation (UD7)Object Detection Description and Operation (with rear camera UVC) Object Detection Description and Operation (with rear camera 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 that DTC B2545 is not set.

• If the DTC is set
Refer to DTC B2545 B2545.

• If the DTC is not set

3. Verify the rearview camera has 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.

• If no debris on the lens

4. Ignition ON, transmission in REVERSE.

5. Verify the backup lamps are On.

• If the backup lamps are not ON
Refer to Backup Lamps Malfunction Backup Lamps Malfunction.

• If the backup lamps are ON

6. Engine running, transmission in REVERSE.

7. Verify a clear rear vision image is displayed on the radio.

• If a clear image is not displayed
Refer to Circuit/System Testing.

• If a clear image is displayed

8. All OK.

Circuit/System Testing

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

1. Ignition OFF, disconnect the harness connector at the Rearview Camera.

2. Test for less than 10 ohms between the ground circuit terminal 5 and ground.

• If 10 ohms or greater
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. Ignition ON.

4. Verify a test lamp illuminates between the ignition circuit terminal 6 and ground.

• If the test lamp does not illuminate

1. Ignition OFF.

2. Test for less than 2 ohms in the ignition 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 OK and there is voltage at the fuse.

3. If the circuit tests normal, test or replace the RUN/CRNK Relay.

• If the test lamp illuminates

5. Engine running, park brake applied, transmission in REVERSE.

6. Verify a test lamp illuminates between the control circuit terminal 3 and ground.

• If the test lamp does not illuminate

1. Ignition OFF, disconnect the X5 harness connector at the Body Control Module.

2. Test for infinite resistance between the control circuit and ground.

• If less than infinite resistance, repair the short to ground on the circuit.

• If infinite resistance

3. Test for less than 2 ohms in the control circuit end to end.

• If 2 ohms or greater, repair the open/high resistance in the circuit.

• If less than 2 ohms, replace the Body Control Module.

• If the test lamp illuminates

7. Ignition OFF, disconnect the X4 harness connector at the Radio, ignition ON.

8. Test for less than 1 V between the signal circuit terminal listed below and ground:

* Signal (+) circuit terminal 1 at the Rearview Camera.

* Signal (-) circuit terminal 4 at the Rearview Camera.

• If 1 V or greater
Repair the short to voltage on the circuit.

• If less than 1 V

9. Test for infinite resistance between the signal circuit terminal listed below and ground:

* Signal (+) circuit terminal 1 at the Rearview Camera.

* Signal (-) circuit terminal 4 at the Rearview Camera.

• If less than infinite resistance
Repair the short to ground on the circuit.

• If infinite resistance

10. 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

11. Test for less than 2 ohms in the signal (-) circuit end to end.

• If 2 ohms or greater
Test the signal circuit for an open/high resistance.

• If less than 2 ohms

12. Replace the Rearview Camera.

13. Engine running, transmission in REVERSE, verify a clear rear vision image is displayed on the Radio.

• If a clear rear vision image is not displayed on the Radio
Replace the Radio.

• If a clear rear vision image displayed on the Radio

14. All Ok.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair.

* Rearview Camera Image Display Module Replacement Rearview Camera Image Display Module Replacement

* Control Module References Control Module References for body control module or radio replacement, programming and setup