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Home >> GMC >> 2019 >> Terrain SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 137 (Cellular System, Entertainment System, And Navigation System - Diagnostic Information And Procedures) >> Diagnostic Information And Procedures >> Radio Controls Malfunction (IOR) >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2018 GMC Terrain and 2018 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.

For an overview of the component/system, refer to: Radio/Audio System Description and Operation (IOR)

Circuit Description
Signal circuit The control module input circuit has an internal resistance connected to ground.
Low Reference Grounded through the control module.
Component Description
A11 Radio The radio is used for entertainment and may contain other functions like navigation.
P17 Info Display Module The info display is the big screen in the center console.
A22 Radio Controls This device is the user interface to control the HVAC and infotainment systems.
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