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Home >> Hummer >> 2009 >> H3 Base, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Collision/Avoidance >> Object Detection System >> Diagnostic Information and Procedures >> Rear Vision Camera System Malfunction (H3) >> Circuit/System Description

Circuit/System Description

When the transmission is placed into REVERSE, a 12 volt signal is sent to the rearview camera image display module indicating that camera operation is requested. The rearview camera image display module then supplies ignition voltage and ground to the rearview camera. The rearview camera sends video information through the rearview camera image display module to the inside rearview mirror 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.