Parking Aid System: Other Ford Explorer V

Network Message Chart

PAM NETWORK INPUT MESSAGES

ACM NETWORK INPUT MESSAGES

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.

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.

Scheme 14

BCM NETWORK INPUT MESSAGES

APIM NETWORK INPUT MESSAGES

Image Display

The liftgate must remain closed for correct operation of the video camera system.

Note. The guidelines will not appear if the liftgate is ajar.

The video camera system has 5 video features that are controlled in the FDIM

1. Fixed guidelines - this feature assists the driver with backing into a parking space or aligning the vehicle with an object.
2. Active guidelines - this feature projects the intended path of the vehicle based upon steering wheel input.
3. Visual park aid alert - this feature assists the driver to visually see the object causing the parking aid system to sound.
4. Manual zoom - this feature assists the driver with connecting or towing a trailer allowing the driver to manually zoom closer to an object behind the vehicle.
5. Video camera delay - this feature allows the driver to see the image behind the vehicle after the vehicle is shifted out of REVERSE and the vehicle speed has not exceeded 8 kmh (5 mph). The image will not be displayed if the vehicle is shifted into PARK.

For each one of these system features except the camera delay feature, the APIM sends requests to the BCM. The BCM sends the commands to the video camera over a dedicated LIN. The video camera delay feature is controlled with in the APIM.

All of the video camera features are enabled and disabled within the FDIM menu screen. The video camera delay feature keeps the image displayed on the FDIM until the vehicle reaches 8 kmh (5 mph) when the vehicle is shifted out of REVERSE or if any button on the FDIM is pressed. The video camera fixed guidelines feature displays guidelines on top of the video image to assist the driver with alignment of the vehicle. A dashed line on the displayed image represents the center of the vehicle and 3 color-coded lines (red, yellow, green) identify different zones between the rear of the vehicle and objects.

The color-coded lines cannot indicate accurate or consistent distances between objects located behind the vehicle and at the rear of the vehicle. This normal condition is due to variances in vehicle ride height, including, but not limited to, vehicle loading.

The manual zoom feature is controlled by the video camera. The manual zoom feature has 3 zoom levels that are only active when the vehicle is in REVERSE. If the manual zoom feature is enabled and the vehicle is shifted out of REVERSE the manual zoom feature is disabled. The manual zoom feature must be re-enabled the next time the vehicle is shifted into REVERSE.

The BCM and the video camera communicate on a LIN which is a dedicated single wire communication network.

The messages sent from the BCM to the video camera are

1. transmission selector (PRNDL) status (REVERSE/not REVERSE only)
2. liftgate ajar status
3. camera configuration data
4. display manual zoom request
5. parking aid audible warning status
6. parking aid sensor distance to object data

The messages sent from the video camera to the BCM are

1. camera status
2. display zoom status
3. camera part number data
4. visual park aid alert status
5. fixed guideline status

Visual Park Aid

Note. The visual park aid alert feature is not an option with the police package.

The visual park aid alert feature utilizes the 4 parking aid sensor inputs from the PAM and the video camera image. When the transaxle selector is in REVERSE and an object is detected in the path of the parking aid sensor, parking aid range to object data is sent from the PAM through the BCM to the video camera.

The visual alerts are red, yellow or green and appear as highlights on top of the displayed image to indicate in which zone the object is detected. The highlighted visual alerts are still operational if the parking aid system is disabled within the IPC and the visual alert feature is enabled.

Active guidelines display the intended vehicle path based upon the steering wheel angle.

Video Camera

The rear video camera system is active with the ignition in RUN and the transaxle selector in REVERSE. The video camera receives commands and sends status over a dedicated LIN to the BCM. The video camera is programmable and is configured through the BCM using a scan tool.

B1B44:14, B1B46:14, B1B48:14, B1B50:14

Refer to OEM Wiring Diagrams - PARKING AID for schematic and connector information.

B1B44:12, B1B46:12, B1B48:12, B1B50:12

Refer to OEM Wiring Diagrams - PARKING AID for schematic and connector information.

B1B58:11

Refer to OEM Wiring Diagrams - PARKING AID for schematic and connector information.

B1B52:12, B1B52:14

Refer to OEM Wiring Diagrams - PARKING AID for schematic and connector information.

The Rear Video Is Inoperative

Refer to OEM Wiring Diagrams - PARKING AID for schematic and connector information.

Poor Image Quality

Refer to OEM Wiring Diagrams - PARKING AID for schematic and connector information.

General Procedure

Note. The following system check should be carried out with the vehicle on a 3.05 m (10 ft) wide by 4.57 m (15 ft) deep smooth concrete surface, free of all obstacles and noise from fan and pneumatic tools.

Scheme 15

1. Turn the ignition to the ON position, engine off.
2. Set the parking brake.
3. Place the gear shift in REVERSE (R).
4. Verify that no audible alerts are heard. If audible alerts are heard, check to make sure the bumper is correctly installed and is not tilted downward so that the sensor is pointing at the ground. If the audible warning tone is heard, REFER to «Symptom Chart: Parking Aid - Audible»(ref-517587-S00357022542012121200000) .

Scheme 16

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Scheme 18

Scheme 19

Scheme 20

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Scheme 22

1. NOTE: Module configuration is required when a new PAM is being installed. Upload the module configuration information from the PAM into the scan tool by following the instructions on the scan tool.
2. Position aside the liftgate weatherstrip.
3. NOTE: To avoid damage to the liftgate scuff plate trim panel, remove any retaining clips from the body and attach them to the liftgate scuff plate trim panel before installing. Remove the liftgate scuff plate trim panel. Pull upward to release the retaining clips.
4. NOTE: To avoid damage to the scuff plate trim panel, remove any retaining clips from the body and attach them to the scuff plate trim panel before installing. Remove the rear RH door scuff plate trim panel. Pull upward on the scuff plate trim panel to release the retaining clips.
5. Remove the RH quarter trim panel retaining push pin.
6. Position the RH second row seat in the flat position and then tilt the second row seat forward.
7. Position the RH third row seat in the flat position.
8. Remove the RH cargo retaining hooks.
9. NOTE: To avoid damage to the quarter trim panel, remove any retaining clips from the body and attach them to the quarter trim panel before installing. Position the RH quarter trim panel aside. Pull the RH quarter trim panel toward the inside of the vehicle to release the retaining clips
10. Remove the 2 bolts and remove the PAM. Disconnect the electrical connector. To install, tighten to 3 Nm (27 lb-in).