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Home >> Ford >> 2009 >> Flex Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 2022 (Parking Aid System) >> Diagnosis And Testing >> Parking Aid >> Pinpoint Tests >> Pinpoint Test I: The Audio Does Not Reduce When The Parking Aid Tone Sounds >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

A volume cutback request message is sent to the Audio Control Module (ACM) from the Parking Aid Module (PAM) over the Medium Speed Controller Area Network (MS-CAN) to decrease the volume of the ACM  while the parking aid warning tone is sounded. The sounder increases its warning tone rate as the vehicle gets closer to an obstacle. When an object is detected within 30 cm (12 in) of the vehicle, the warning tone becomes continuous.

This pinpoint test is intended to diagnose the following: 

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