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Object Detection System - Park Assist System Chevrolet Captiva I рестайлинг

Collision/avoidance 2 illustrations ~1454 words

Scheme 1

Scheme 1: Rear Vision Camera (UVC)
Scheme 1: Rear Vision Camera (UVC)

Symptoms - Object Detection

Note. Review the system operation in order to familiarize yourself with the system functions. Refer to Object Detection Description and Operation .

Visual/Physical Inspection

  1. Inspect for aftermarket devices which could affect the operation of the system. Refer to «Checking Aftermarket Accessories»(/chevrolet/captiva/i-2011-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__checking-aftermarket-accessories)
  2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
  3. Make sure the rear vision camera is clear. Remove any snow, mud or ice that is blocking the rear vision camera.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

Symptom List

Refer to Rear Vision Camera System Malfunction in order to diagnose the symptom.

Diagnostic Instructions

  1. Perform the «Diagnostic System Check - Vehicle»(/chevrolet/captiva/i-2011-2013/remont/oem-general-information/#vehicle-diagnostic-information) prior to using this diagnostic procedure.
  2. Review «Strategy Based Diagnosis»(/chevrolet/captiva/i-2011-2013/remont/oem-general-information/#vehicle-diagnostic-information__strategy-based-diagnosis) for an overview of the diagnostic approach.
  3. «Diagnostic Procedure Instructions»(/chevrolet/captiva/i-2011-2013/remont/oem-general-information/#vehicle-diagnostic-information__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Circuit/System Description

When the transmission is placed into REVERSE, a 12 volt 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

Connector End View Reference

Description and Operation

Electrical Information Reference

  1. «Circuit Testing»(/chevrolet/captiva/i-2011-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
  2. «Connector Repairs»(/chevrolet/captiva/i-2011-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
  3. «Testing for Intermittent Conditions and Poor Connections»(/chevrolet/captiva/i-2011-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
  4. «Wiring Repairs»(/chevrolet/captiva/i-2011-2013/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__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»(/chevrolet/captiva/i-2011-2013/remont/exterior-lights/#lighting-system) .
  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 after completing the diagnostic procedure.

  1. «Rearview Camera Replacement»(/chevrolet/captiva/i-2011-2013/remont/collisionavoidance/#object-detection-system-park-assist-system)
  2. «Control Module References»(/chevrolet/captiva/i-2011-2013/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for inside rearview mirror replacement, setup, and programming

Removal Procedure

  1. Remove rear bumper fascia. Refer to «Rear Bumper Fascia Replacement»(/chevrolet/captiva/i-2011-2013/remont/exterior-body-panels/#bumpers-and-fascias) .
  2. Disconnect electrical from the rear object sensor.
  3. Lift the locking tabs on the housing and remove the rear object sensor.

Installation Procedure

  1. Paint the rear object sensor. Refer to «Basecoat/Clearcoat Paint Systems»(/chevrolet/captiva/i-2011-2013/remont/paintcoatings/#paint-and-coatings__basecoatclearcoat-paint-systems) .
  2. Ensure the paint does not exceed 6 mils. Use a paint thickness gauge suitable for non-ferrous metals. Refer to «Paint Gauges»(/chevrolet/captiva/i-2011-2013/remont/paintcoatings/#paint-and-coatings__paint-gauges) .
  3. Insert the sensor into the housing.
  4. Connect the electrical connector to the rear object sensor.
  5. Install the rear bumper fascia. Refer to «Rear Bumper Fascia Replacement»(/chevrolet/captiva/i-2011-2013/remont/exterior-body-panels/#bumpers-and-fascias) .

Rear Object Sensor Housing Replacement

  1. Remove the rear fascia. Refer to «Rear Bumper Fascia Replacement»(/chevrolet/captiva/i-2011-2013/remont/exterior-body-panels/#bumpers-and-fascias) .
  2. Disconnect the sensor harness.
  3. Remove the sensor from the sensor housing.
  4. Paint the new sensor. Refer to «Basecoat/Clearcoat Paint Systems»(/chevrolet/captiva/i-2011-2013/remont/paintcoatings/#paint-and-coatings__basecoatclearcoat-paint-systems) .
  5. Inspect the paint thickness to ensure it does not exceed 6 mm using a paint thickness gauge suitable for non-ferrous metals. Refer to «Paint Gauges»(/chevrolet/captiva/i-2011-2013/remont/paintcoatings/#paint-and-coatings__paint-gauges)
  6. Sand/grind sonic weld plastic residue from the fascia.
  7. Apply structural adhesive epoxy, Lord Fusor™ 127EZ or equivalent, to fascia at mating surface.
  8. Using the alignment tabs, install the sensor housing to the fascia.
  9. Allow adhesive to cure according to manufacturer's directions.
  10. Install the sensor to the sensor housing.
  11. Connect the electrical harness.
  12. Install the rear fascia. Refer to «Rear Bumper Fascia Replacement»(/chevrolet/captiva/i-2011-2013/remont/exterior-body-panels/#bumpers-and-fascias) .

Scheme 2

Scheme 2: Rearview Camera Replacement
Scheme 2: Rearview Camera Replacement
CalloutComponent Name
Preliminary Procedure Remove the liftgate center applique. Refer to Liftgate Center Applique Replacement .
1Rearview Camera Cover Screw (Qty: 4) CAUTION: Refer to Fastener Caution . Tighten 2 N.m (18 lb in)
2Rearview Camera Cover
3Rearview Camera Procedure Disconnect the electrical connector. Depress the clip fingers and push outward to remove the rearview camera from the applique.
CAUTION
Refer to Fastener Caution .

Rearview Camera Replacement

Rear Vision Camera System Operation

The rear vision camera system consists of a video camera located at the rear of the vehicle and a 3.5 inch LCD display integral to the inside rearview mirror (ISRVM).

When the transmission is placed into REVERSE, a 12 volt signal is sent to the rear vision camera by the body control module (BCM). This signal indicates to the camera that the vehicle is in reverse and image display is requested. The rear vision camera receives ignition voltage and a constant ground to power the camera. Video signal + and video signal - circuits carry the video image from the rear vision camera to the LCD display in the inside rearview mirror. Additionally, the video signal circuits are shielded to prevent any interference which may lead to a loss of video signal resolution and a degraded video image. The shield is provided a ground path by the rear vision camera.

The following conditions may cause a degraded rear vision camera image

  1. Ice, snow, or mud has built up on the rear vision camera
  2. Dark conditions
  3. Extreme light conditions, such as glare from the sun or the headlights of another vehicle
  4. Damage to the rear of the vehicle
  5. Extreme high temperatures or extreme temperature changes