Ford Taurus Service Manual: Parking Aid - Audible

SPECIFICATIONS

General Specifications

Ford Taurus. Instrumentation and Warning Systems

DESCRIPTION AND OPERATION

Parking Aid

Component Location

Ford Taurus. Instrumentation and Warning Systems

  1. Parking aid speaker
  2. PAM
  3. Parking aid sensors

Overview

The parking aid system sounds a warning to alert the driver of stationary objects near the rear bumper when REVERSE is selected. The rear sensors are activated when REVERSE is selected. The parking aid system assists the driver in detecting certain objects while the vehicle moves slowly in REVERSE at speeds of less than 4.8 kmh (3 mph). The parking aid system may not detect moving objects.

The parking aid system is active when the ignition switch is in the RUN position and the transmission in REVERSE. The parking aid system is disabled if a fault is detected in 1 of the 4 sensors, the parking aid speaker, or the PAM. This is indicated by a parking aid disabled warning message in the message center.

The parking aid system is enabled and disabled through the message center, located in the IPC.

If a MyKey restricted key is in use, the parking aid menu is not available in the message center and cannot be deactivated.

System Operation

System Diagram

Ford Taurus. Instrumentation and Warning Systems

Network Message Chart

 Module Network Input Messages - PAM

Ford Taurus. Instrumentation and Warning Systems

 Module Network Input Messages - IPC

Ford Taurus. Instrumentation and Warning Systems

 Module Network Input Messages - ACM

Ford Taurus. Instrumentation and Warning Systems

 Module Network Input Messages - Audio DSP Module with Sony Sound

Ford Taurus. Instrumentation and Warning Systems

Parking Aid System Operation

The parking aid system calculates the distance to an object around the rear of the vehicle using 4 ultrasonic sensors. The parking aid sensors detect objects approximately 1,524 mm (60 in) from the rear of the vehicle, 508 mm (20 in) from the rear side of the vehicle, and 304.8 mm (12 in) above the ground.

The PAM calculates the distance to an object within the 170 degree semicircular (azimuth) area around the rear of the vehicle. A variable-rate warning tone is generated from a speaker attached to the PAM.

The PAM can be diagnosed with a scan tool.

Parking Aid Audible Alert

The speaker increases its warning tone rate as the vehicle gets closer to an obstacle. When an object is detected within 304.8 mm (12 in) of the sensors, the warning tone becomes continuous.

When the PAM sounds the parking aid tone, it sends an audio volume cutback message to the IPC which sends a message over the to the ACM. When the ACM receives the message, it reduces the speaker output so the parking aid tone can be heard. If the vehicle is equipped with Sony sound the audio DSP module reduces the speaker output.

Component Description

Parking Aid Sensors

The parking aid sensors are 3-wire type ultrasonic distance detecting sensors.

Parking Aid Module (PAM)

The PAM calculates and reports via audible output the distance between the rear of the vehicle and an object. The PAM requires PMI when replaced.

Parking Aid Speaker

The parking aid speaker is a variable-rate warning tone and is commanded by the PAM.

DIAGNOSIS AND TESTING

Parking Aid

DTC Charts

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Parking Aid Module (PAM) DTC Chart

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Symptom Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Ford Taurus. Instrumentation and Warning Systems

Pinpoint Tests

Pinpoint Test A: The Parking Aid Is Inoperative/Does Not Operate Correctly

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Refer to Wiring Diagrams Cell 131, Parking Aid for schematic and connector information.

Normal Operation and Fault Conditions

REFER to Parking Aid System Operation in Parking Aid.

If a MyKey restricted key is in use, the parking aid menu is not available in the message center and cannot be deactivated.

    Possible Sources
  • Wiring, terminals or connectors
  • Parking aid sensor alignment
  • Bumper cover
  • PAM

PINPOINT TEST A: THE PARKING AID IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Pinpoint Test B: DTC B1B44:14, B1B46:14, B1B48:14 Or B1B50:14

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Refer to Wiring Diagrams Cell 131, Parking Aid for schematic and connector information.

DTC Fault Trigger Conditions

Ford Taurus. Instrumentation and Warning Systems

    Possible Sources
  • Wiring, terminals or connectors
  • Parking aid sensor
  • PAM

Visual Inspection and Diagnostic Pre-checks

Before disconnecting the PAM or the sensors, verify that the connectors are properly seated and latched.

PINPOINT TEST B: DTC B1B44:14, B1B46:14, B1B48:14 OR B1B50:14

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Pinpoint Test C: DTC B1B44:12, B1B46:12, B1B48:12 Or B1B50:12

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Refer to Wiring Diagrams Cell 131, Parking Aid for schematic and connector information.

Normal Operation and Fault Conditions

The PAM supplies a reference voltage and signal return to rear parking aid sensors. A fault condition occurs when the PAM detects a short to voltage on the parking aid sensor signal circuit.

DTC Fault Trigger Conditions

Ford Taurus. Instrumentation and Warning Systems

    Possible Sources
  • Wiring, terminals or connectors
  • Parking aid sensor
  • PAM

Visual Inspection and Diagnostic Pre-checks

Before disconnecting the PAM or the sensors, verify that the connectors are properly seated and latched.

PINPOINT TEST C: DTC B1B44:12, B1B46:12, B1B48:12 OR B1B50:12

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Pinpoint Test D: DTC B1B44:96, B1B46:96, B1B48:96 Or B1B50:96

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Refer to Wiring Diagrams Cell 131, Parking Aid for schematic and connector information.

Normal Operation and Fault Conditions

REFER to Parking Aid System Operation in Parking Aid.

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). A fault condition occurs when the signal or the attenuation time is out of normal range.

DTC Fault Trigger Conditions

Ford Taurus. Instrumentation and Warning Systems

    Possible Sources
  • Wiring, terminals or connectors
  • Parking aid sensor
  • PAM

PINPOINT TEST D: DTC B1B44:96, B1B46:96, B1B48:96 OR B1B50:96

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Pinpoint Test E: DTC B1B52:12 Or DTC B1B52:14

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Refer to Wiring Diagrams Cell 131, Parking Aid for schematic and connector information.

DTC Fault Trigger Conditions

Ford Taurus. Instrumentation and Warning Systems

    Possible Sources
  • Wiring, terminals or connectors
  • Rear parking aid speaker
  • PAM

Visual Inspection and Diagnostic Pre-checks

Before disconnecting the PAM or the sensors, verify that the connectors are properly seated and latched.

PINPOINT TEST E: DTC B1B52:12 OR DTC B1B52:14

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Pinpoint Test F: DTC B1B58:11

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Refer to Wiring Diagrams Cell 131, Parking Aid for schematic and connector information.

DTC Fault Trigger Conditions

Ford Taurus. Instrumentation and Warning Systems

    Possible Sources
  • Wiring, terminals or connectors
  • Parking aid sensor
  • PAM

Visual Inspection and Diagnostic Pre-checks

Before disconnecting the PAM or the sensors, verify that the connectors are properly seated and latched.

PINPOINT TEST F: DTC B1B58:11

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Pinpoint Test G: The Audio Output Does Not Reduce When The Parking Aid Tone Sounds

Diagnostic Overview

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. Refer to Diagnostic Methods in Section 100-00 for information about these practices.

Normal Operation and Fault Conditions

REFER to Parking Aid Audible Alert in Parking Aid.

    Possible Sources
  • Wiring, terminals or connectors
  • PAM
  • ACM

PINPOINT TEST G: THE AUDIO OUTPUT DOES NOT REDUCE WHEN THE PARKING AID TONE SOUNDS

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

GENERAL PROCEDURES

Azimuth System Check

Minimum Detectable Object Locations

Ford Taurus. Instrumentation and Warning Systems

  1. NOTE: The object used in this system check can be fabricated using a 9 cm diameter (3 in I.D.) pipe, 100 cm (39 in) in length (available as Polyvinyl Chloride (PVC) pipe, or similar from a hardware or plumbing supply.

    NOTE: The following system check should be carried out with the vehicle on a level surface.

    NOTE: The parking aid system defaults to on when the ignition key is cycled from the OFF position to the ON position.

    Turn the ignition switch to the ON position, engine off.
  1. Apply the parking brake.
  1. Place the gear shift in REVERSE (R).
  1. Verify that the Parking Aid Module (PAM) detects the objects when placed in the 5 specified locations (P1, P2, P3, P4 and P5).
    • The speaker should beep slowly when objects are detected on the outer edges of the detection zone, and increase as the object is moved closer to the vehicle. When the object is within 25 cm (10 in) of the rear bumper, the sounder should sound continuously.
    • If the PAM does not detect the object above, refer to Parking Aid in the Diagnosis and Testing portion of this section.

Elevation System Check

  1. Check the parking aid system to make sure the system does not see signals caused by ground reflections.

    Ford Taurus. Instrumentation and Warning Systems

  1. The following system check should be carried out with the vehicle on a 4.6 m (15 ft) wide by 3.0 m (10 ft) deep smooth concrete surface, free of all obstacles. The area should also be free of noise from fans and pneumatic tools.
  1. Turn the ignition switch to the ON position, engine off.
  1. Apply the parking brake.
  1. Place the gear shift in REVERSE (R).
  1. NOTE: No audible warning tones should be heard. If audible warning tones are heard, check to make sure the bumper is installed correctly and not tilted downward so that the sensor is pointing towards the ground.

    Verify that no audible warning tones are heard.

    • If the audible warning tone is heard, refer to Parking Aid in the Diagnosis and Testing portion of this section.

REMOVAL AND INSTALLATION

Parking Aid Module (PAM)

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Removal and Installation

  1. NOTE: Module configuration is only required if a new Parking Aid Module (PAM) is being installed.

    Upload the PAM configuration information to the scan tool. For additional information, refer to Programmable Module Installation (PMI) in Section 418-01.

  1. Remove the package tray trim panel. For additional information, refer to Section 501-05.
  1. Remove the 2 pin-type retainers.
    • Disconnect the electrical connector.
  1. Remove the PAM.
  1. To install, reverse the removal procedure.
    • Download the configuration information to the PAM. For additional information, refer to PMI in Section 418-01.

Parking Aid Speaker

Ford Taurus. Instrumentation and Warning Systems

Ford Taurus. Instrumentation and Warning Systems

Removal and Installation

  1. Remove the parcel shelf. For additional information, refer to Section 501-05.
  1. Remove the 2 push pins and the parking aid speaker.
    • Disconnect the electrical connector.
  1. To install, reverse the removal procedure.

Parking Aid Sensor

Removal

  1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Section 100-02.
  1. Remove the rear bumper cover. For additional information, refer to Section 501-19.
  1. NOTE: Gently pry the retaining tabs on the parking aid sensor bezels to release the sensor(s).

    Ford Taurus. Instrumentation and Warning Systems

Installation

  1. To install, reverse the removal procedure.
    • Carry out the azimuth and elevation system check. For additional information, refer to Azimuth System Check and Elevation System Check.
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