Rear Vision Camera System Operation
The rear vision camera system consists of:
- Rearview camera
- Body control module
- Human machine interface control module
- Info display module
When the transmission is placed into REVERSE, a 12 volt signal is sent to the rearview camera by the body control module. This signal indicates to the camera that the vehicle is in reverse and image display is requested. The rearview camera receives ignition voltage and a constant ground to power the camera. Video signal + and video signal - circuits carry the video image from the rearview camera to the human machine interface control module. The video signal is then transmitted to the info display module. 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:
- Ice, snow, or mud has built up on the rear vision camera
- Dark conditions
- Extreme light conditions, such as glare from the sun or the headlights of another vehicle
- Damage to the rear of the vehicle
- Extreme high temperatures or extreme temperature changes
- Defective video signal shielding
If a malfunction is detected in the system, Service Rear Vision Camera may be displayed on the infotainment display as an indicator to the customer that a problem exists that requires service.