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.
Diagnostic Fault Information
Circuit/System Description
The ISRVM and rearview camera image display module requires a B+ signal to enable the rear vision system. This signal is provided by the park/neutral position (PNP) switch (automatic transmission) or backup lamp switch (manual transmission) when placing the transmission in reverse. When the transmission is in the reverse, the rearview camera image display module will supply the camera with a regulated 12-volt power source and ground. The LCD display will deploy and remain deployed until the transmission is moved out of the reverse position. Once the transmission is moved out of the reverse position the display will retract. Anything preventing the display from fully extending will cause the display to retract. A shielded video signal circuit will transfer the video signal through the rearview camera image display module to the ISRVM display.
Diagnostic Aids
A poor video image can be caused by debris 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.
Reference Information
Schematic Reference
Object Detection Schematics ([1][2]Collision Avoidance and Parking Assist Systems)
Connector End View Reference
Component Connector End Views (Component Connector End Views)
Description and Operation
Object Detection Description and Operation (Rear Vision Camera) (Object Detection Description and Operation (Rear Vision Camera))Object Detection Description and Operation (Front Vision Camera) (Object Detection Description and Operation (Front Vision Camera))
Electrical Information Reference
* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)
Circuit/System Verification
1. Verify there are no debris on the lens and that the a bezel and bezel seal are not damaged.
• If debris are found on the lens, clean any debris from 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 (Backup Lamps Malfunction) .
3. Vehicle in REVERSE, verify the backup lamps are illuminated.
• If the backup lamps are not illuminated, refer to Backup Lamps Malfunction (Backup Lamps Malfunction) .
4. Vehicle in PARK, verify that the LCD is not deployed from the ISRVM.
• If the LCD is deployed, refer to LCD Deployed At All Times With No Image.
5. Vehicle in REVERSE, the LCD should deploy from the ISRVM and a clear rearview image should be displayed.
• If a clear image is not displayed, refer to Rear Vision System Does Not Display.
• If the LCD does not deploy, refer to LCD Does Not Deploy.
Circuit/System Testing
LCD Deployed At All Times
1. Ignition OFF, disconnect the harness connector at the ISRVM.
2. Ignition ON, vehicle in PARK, verify a test lamp does not illuminate between the control circuit terminal 1 and ground.
• If the test lamp illuminates, test the control circuit for a short to voltage.
3. If all circuits test normal, replace the ISRVM.
LCD Does Not Deploy
1. Ignition OFF, disconnect the harness connector at the ISRVM.
2. Ignition ON, vehicle in REVERSE, verify a test lamp illuminates between the control circuit terminal 1 and ground.
• If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance.
3. If all circuits test normal, replace the ISRVM.
Rear Vision System Does Not Display
1. Ignition OFF, disconnect the harness connector at the rearview camera image display module.
2. Test for less than 10 ohms between the ground circuit terminal 3 and ground.
• If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify a test lamp illuminates between the ignition circuit terminal 2 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 in REVERSE, verify a test lamp illuminates between the control circuit terminal 1 and ground.
• If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance.
5. Ignition OFF, connect the harness connector at the rearview camera image display module. Disconnect the harness connector at the rearview camera.
6. Ignition OFF, test for less than 1.0 ohm between the low reference circuit terminal B and ground.
• If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the rearview camera image display module.
7. Test for less than 3.0 ohms along the signal circuit terminal C to terminal 9.
• If greater than the specified range, test the signal circuit for an open/high resistance.
8. Ignition ON, vehicle in REVERSE, test for 5.8-6.2 volts between the 6-volt reference circuit terminal A and ground.
• If less than the specified range, test the 6-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the rearview camera image display module.
• If greater than the specified range, test the 6-volt reference circuit for a short to voltage. If the circuit tests normal, replace the rearview camera image display module.
9. Ignition OFF, disconnect the harness connector at the ISRVM.
10. Test for infinite resistance between the signal circuit terminals listed below C and ground:
* Terminal 1
* Terminal 2
• If not the specified value, test the signal circuit for a short to ground. If the circuit tests normal, replace the rearview camera image display module.
11. Ignition ON, verify that a test lamp does not illuminate test for less than 1 volt between the camera video signal circuit terminals listed below C and ground:
* Terminal 1
* Terminal 2
• If greater than the specified range the test lamp illuminates, test the signal circuit for a short to voltage. If the circuit tests normal, replace the rearview camera image display module.
12. Test for less than 3.0 ohms between along the signal circuit terminals listed below C to terminal 9.
* Terminal 1 at the ISRVM and terminal C at the rearview camera
* Terminal 2 at the ISRVM and terminal D at the rearview camera
• If greater than the specified range, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the rearview camera image display module.
13. Ignition OFF, test for less than 10 ohms between the shield low reference circuit terminal 2 and ground.
• If greater than the specified range, test the shield low reference circuit for an open/high resistance. If the circuit tests normal, replace the rearview camera image display module.
14. If all circuits test normal, replace the rearview camera.
15. Ignition ON, vehicle in REVERSE, verify a clear rearview image should is displayed on the LCD.
• If a clear image is not displayed, replace the ISRVM.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Inside Rearview Mirror Replacement (Inside Rearview Mirror Replacement)
* Rearview Camera Replacement (Rearview Camera Replacement)
* Control Module References (Programming and Relearning) for rearview camera image display module replacement, setup, and programming