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Home >> Chevrolet >> 2009 >> Traverse LS, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 49 (Object Detection System) >> Diagnostic Information and Procedures >> DTC B138A >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2010 Saturn Outlook, 2010 GMC Acadia, 2010 Chevrolet Traverse, and 2010 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.

The object alarm sensors are 3-wire sensors that are used to determine the distance between the vehicle and an object of interest. The object alarm module supplies an 8 V reference and ground reference to each of the object alarm sensors. The object alarm module triggers the sensors in a sequential loop. After each sensor transmits, the object alarm module uses the sensor echo received through the signal circuit to calculate the distance and position of an object.

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