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Home >> GMC >> 2018 >> Terrain SL >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Cellular System, Entertainment System, And Navigation System - Diagnostic Information And Procedures >> Diagnostic Information And Procedures >> Radio Information Display Malfunction (IOR) >> Circuit/System Description

Circuit/System Description

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

Circuit Description
Signal circuit terminal 6 The control module input circuit has an internal resistance connected to ground.
Control circuit terminal 9 The input voltage varies depending on the switch position.
12 V Reference circuit terminal 1 Regulated voltage supplied by the control module.
Low-Voltage Differential Signaling Cable Audio and Video Module Cable
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.