Normal Operation
WARNING: This page is about a different car, the 2010 Mercury Milan, 2010 Lincoln MKZ, and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
The Parking Aid Module (PAM) supplies a reference voltage and signal return to the parking aid sensors. Each of the parking aid sensors has an individual input signal to the PAM . When an object is present behind the vehicle, the PAM receives an input signal from the sensors and determines the distance of the object to the vehicle. A fault condition occurs when the PAM detects an open in the parking aid sensor circuits or the parking aid sensor input signal is shorted to ground.
The attenuation time for the rear parking aid sensors is the time required for a sensor to detect the distance to an object expressed in milliseconds (ms).
- DTC C1701 (Left Rear Sensor Circuit Fault) - a continuous and on-demand DTC that sets when the left rear parking aid sensor has internally failed or has an incorrect attenuation time.
- DTC C1704 (Right Rear Sensor Circuit Fault) - a continuous and on-demand DTC that sets when the right rear parking aid sensor has internally failed or has an incorrect attenuation time.
- DTC C1707 (Rear Center Sensor Circuit Fault) - a continuous and on-demand DTC that sets when the left rear center parking aid sensor has internally failed or has an incorrect attenuation time.
This pinpoint test is intended to diagnose the following:
- Dirty or obstructed parking aid sensor
- Parking aid sensor
- Parking aid bumper harness
- PAM