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Home >> Lincoln >> 2011 >> MKS EcoBoost >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Warning Systems >> Parking Aid System >> Diagnosis And Testing >> Parking Aid >> Pinpoint Tests >> Pinpoint Test H: The Audio Output Does Not Reduce When The Parking Aid Tone Sounds >> Normal Operation

Normal Operation

A variable rate warning tone is generated by the parking aid sounder. A volume cutback request message is sent to the Instrument Panel Cluster (IPC) from the Parking Aid Module (PAM) over the High Speed Controller Area Network (HS-CAN), then gatewayed to the Audio Control Module (ACM) to decrease the volume of the audio system. The volume cutback makes sure that the parking aid sounder can be clearly heard.

This pinpoint test is intended to diagnose the following: 

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