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 rearview camera and rearview mirror indicating that the vehicle is in reverse and image display is requested. Ignition voltage and ground are supplied to the rearview camera. The rearview mirror is supplied ignition voltage and a common ground. The rearview camera sends video information to the LCD display located in the rearview mirror. The video signal is shielded to reduce electronic interference which may degrade the video signal and cause a distorted or degraded image.

Diagnostic Aids

A poor video image can be caused by mud or dirt buildup on the lens of the rearview camera. Extreme lighting conditions can also affect performance, such as operating in the dark or with bright sunlight shining on the camera. Extreme high temperatures can also affect the image quality.

Reference Information
Schematic Reference

Object Detection Schematics ([1][2]Collision Avoidance and Parking Assist Systems)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Object Detection Description and Operation (Description and Operation)
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)

Circuit/System Verification

1. Inspect the 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. Engine running, vehicle in PARK, verify the backup lamps are off.

• If the backup lamps are illuminated, refer to Rearview Camera System Always On.

3. Vehicle in REVERSE, verify a clear rear vision image is displayed on the inside rearview mirror.

• If a clear image is not displayed, refer to Rearview Camera System Does Not Display.

Circuit/System Testing

Rearview Camera System Always On
1. Ignition OFF, disconnect the harness connector at the rearview camera.
2. Engine running, transmission in PARK, verify a test lamp does not illuminate between the control circuit terminal 3 and ground.

• If the test lamp illuminates, test the control circuit for a short to voltage. If the circuit tests normal, refer to Backup Lamps Malfunction (Automatic Transmission) (Backup Lamps Malfunction (Automatic Transmission))Backup Lamps Malfunction (Manual Transmission) (Backup Lamps Malfunction (Manual Transmission)).

3. If all circuits test normal, test or replace the rearview camera.

Rearview Camera System Does Not Display
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 greater than the specified range, test the ground circuit for an open/high resistance.

3. Engine running, 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. Park brake applied, transmission in REVERSE, test for B+ between the B+ circuit terminal 3 and ground.

• If less than the specified value, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.

5. Test for less than 1 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 range, test the signal circuit for a short to voltage.

6. 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.

7. Test for less than 10 Ohms between the shield ground circuit terminal 2 and ground.

• If greater than the specified range, test the shield ground circuit for an open/high resistance.

8. Ignition OFF, disconnect the harness connector at the inside rearview mirror.
9. Test for less than 2 Ohms between the signal (+) circuit terminal 1 at the rearview camera harness connector and the signal (+) circuit terminal 6 at the inside rearview mirror harness connector.

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

10. Test for less than 2 Ohms between the signal (-) circuit terminal 4 at the rearview camera harness connector and the signal (-) circuit terminal 7 at the inside rearview mirror harness connector.

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

11. If all circuits test normal, test or replace the rearview camera.
12. Engine running, 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 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)
* Programming and Relearning (Programming and Relearning)for inside rearview mirror replacement, setup, and programming