Inspection and verification
1. Check the customer complaint.
2. Visually inspect for obvious signs of electrical damage.
Visual inspection table
Electrical factors:
- Fuse Box(s)
- Relay
- Wiring harness
- Electrical connector(s)
- Parking assistance sensor(s)
- Parking assistance display and speaker
- Reverse light switch
- Parking assistance module
- Parking assistance module fuse insert
3. If an obvious cause for the problem you have identified or the problem described by the customer is found, correct it (if possible) before proceeding with further actions.
4. If the cause is not visually obvious, refer to the parking assist module reset procedure.
Parking Assist Module Reinstallation Procedure
1. Turn the ignition key to position 0.
2. Disconnect the parking aid module fuse.
3. Turn the ignition key to position II.
4. Select reverse gear, then deselect reverse gear.
5. Turn the ignition key to position 0.
6. Connect the parking aid module fuse link.
7. Check if the system is working properly. If the problem persists, refer to the self-diagnosis mode.
Self-diagnostic mode
1. To enter the parking assist module self-diagnosis mode, turn the ignition key to position 0, remove the parking assist module fuse, and make sure that the gear is in neutral.
2. Make sure there are no obstacles within 2 meters from the rear of the vehicle.
3. Turn the ignition key to position II and select reverse gear.
4. The self-diagnosis mode is indicated by a sound signal from the parking assistance module speaker, which sounds for three seconds with a one-second pause.
5. If a fault is detected in the parking assistance sensor, the parking assistance module indicates this by a sequence of beeps from the parking assistance speaker.
6. If a fault is detected in several parking assistance system sensors, the second sequence is output after the first sequence.
7. To exit the self-diagnosis mode, select neutral position, turn the ignition key to position 0 and install the parking assist module fuse.
Sequence of sound signals
|
Sequence of sound signals |
Description |
Actions |
|
Three second signal, one second pause |
Initial sequence for troubleshooting |
- |
|
Single on/off signal, one second pause |
Right outer sensor malfunction |
REFER to the "Checking Elements" section in the description of this procedure. |
|
Twice on and off signal, one second pause |
Right internal sensor malfunction |
REFER to the "Checking Elements" section in the description of this procedure. |
|
Three times the signal is turned on and off, a second pause |
Left internal sensor malfunction |
REFER to the "Checking Elements" section in the description of this procedure. |
|
Four times the signal is turned on and off, a second pause |
Left outer sensor malfunction |
REFER to the "Checking Elements" section in the description of this procedure. |
|
Signal for 75 ms, pause for 75 ms |
Module malfunction. Low battery voltage. Short circuit in the parking assistance module fuse link circuit. |
Proceed to PINPOINT TEST B. |
8. If the complaint is not resolved after passing the Self-Diagnostic Mode, refer to the Table of Malfunction Signs.
Table of signs of malfunctions
|
State |
Possible Causes |
Action |
|
•A continuous sound signal is emitted |
•Parking assistance system sensor(s). •Parking assistance module. •Fuse insert for parking assistance module. |
•REFER to self-diagnosis mode. |
|
•Continuous or intermittent signal from the parking assistance speaker when reverse gear is selected. |
•The parking assist sensor(s) are covered with dirt or ice. •The parking assist sensor(s) are not installed correctly. |
•CLEAN the rear parking aid sensor(s). •INSTALL the rear parking assist sensor(s) correctly. |
|
•Parking assistance system does not work/works incorrectly |
•Parking assistance module. •Reverse light switch •Electrical circuit(s) •Parking assistance system speaker. •Fuse insert for parking assistance module. |
• Proceed to PINPOINT TEST B. |
[The article was taken in its entirety from the specified website: FORDBOOK.RU]