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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 64 (Object Detection) >> Diagnostic Information and Procedures >> Rear Parking Assist Malfunction >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

The inside rear view mirror (ISRVM) has only one voltage source for operation of all mirror functions. With the ignition in RUN all functions of the ISRVM will default to ON. The dual temperature display and rear vision indicators will be illuminated. The ISRVM receives a 12-volt signal from the body control module (BCM) indicating that the vehicle is in reverse gear. The rear vision display will then be deployed from the ISRVM providing a view to the rear of the vehicle. When the display is extended the ISRVM will supply the camera with a 12-volt power source. If a problem exists with the object detection display not deploying or if a proper video signal is not detected, the rear vision ON/OFF indicator located on the ISRVM will flash.

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