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You have to take bumper cover off .
Remove rear bumper fascia. Refer to Rear Bumper Fascia Replacement . Disconnect electrical from the rear object sensor. Lift the locking tabs on the housing and remove the rear object sensor.
Preliminary Procedure
1
Rear Fascia Push Pin Retainers (Qty: 2)
2
Rear Fascia Nuts (Qty: 4)
Tighten
10 N?·m (89 lb in)
3
Rear Fascia Bolts (Qty: 2)
4
Rear Fascia Bolts (Qty: 6)
5
Rear Fascia
Tip
?€¢
Energy absorber and fascia are removed together. Cannot be separate on vehicle.
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Aug 16, 2019 - The Parking Assist Control Module (PAM) monitors the Left Rear Inner Parking Aid Sensor. A continuous memory and on-demand Diagnostic Trouble ..
Try to clean rear parking sensors. Check also electric cables and connections, clean if necessary. Commons faults are sensors out of order. If one or more sensors faults you hear only a continous constant noise when you put in "R" gear. You need a VAS, VAG-COM, Bosch KTS, ... diagnosis scantool. The factory parking system will be scaned from errors with this instrument, and you will find exactly which sensors are out of order (for example: rear left center sensor, rear right side sensor break off, short to ground or short to plus).
First you need to read the code's to find out what the problem is , you don't just guess and replace part's . You really should take it to a qualified repair shop if you don't know that .
Parking Aid
The parking aid system consists of the:
parking aid sensors
parking aid speaker
parking aid module
The parking aid system is activated when the parking aid module receives a network messages from the instrument cluster indicating that the vehicle is in reverse. The parking aid system sounds a warning to alert the driver of stationary objects near the rear bumper when REVERSE is selected. The parking aid system assists the driver in detecting certain objects while the vehicle moves in reverse at speeds less than 4.8 km/h (3 mph). The parking aid system may not detect angular or moving objects.
Inspection and Verification
Verify the customer concern.
Visually inspect the following for obvious signs of electrical damage.
Visual Inspection Chart
Electrical
Smart junction box (SJB) fuse 18 (10A)
Circuitry
Connector(s)
Parking aid sensors
Parking aid speaker
Parking aid module
If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
If the cause is not visually evident, connect the diagnostic tool to the data link connector (DLC) and select the vehicle to be tested from the diagnostic tool menu. If the diagnostic tool does not communicate with the vehicle:
check that the program card is correctly installed.
check the connections to the vehicle.
check the switch position.
If the diagnostic tool still does not communicate with the vehicle, refer to the diagnostic tool operating manual.
Carry out the diagnostic tool data link test. If the diagnostic tool responds with:
CAN circuit fault; all electronic control units no response/not equipped, refer to Section 418-00 .
No response/not equipped for parking aid module, Go To Pinpoint Test A .
System passed, retrieve and record the continuous diagnostic trouble codes (DTCs), erase the continuous DTCs and carry out self-test diagnostics for the parking aid module.
If the DTCs retrieved are related to the concern, go to the Instrument Cluster Diagnostic Trouble Code (DTC) Index or the Parking Aid Module Diagnostic Trouble Code (DTC) Index.
If no DTCs related to the concern are retrieved, GO to Symptom Chart .
Instrument Cluster Diagnostic Trouble Code (DTC) Index
DTC
Description
Source
Action
U0159
Lost Communication With Parking Aid Module
Instrument Cluster
REPAIR all other DTCs first. If the DTC is still present Go To Pinpoint Test A .
All Other DTCs
-
Instrument Cluster
REFER to Section 413-01 .
Parking Aid Module Diagnostic Trouble Code (DTC) Index
DTC
Description
Source
Action
B1299
Power Supply Sensor Circuit Short to Ground
Parking Aid Module
Go To Pinpoint Test C .
B1342
ECU is Faulted
Parking Aid Module
CLEAR the DTCs. REPEAT the parking aid module self-test. If DTC B1342 is retrieved again, INSTALL a new parking aid module. REFER to Parking Aid Module in this section. CLEAR all DTCs. REPEAT the self-test.
B2477
Module Configuration Failure
Parking Aid Module
REFER to Section 418-01 .
C1699
Left Rear Sensor Circuit Short to Battery
Parking Aid Module
Go To Pinpoint Test D .
C1700
Left Rear Sensor Circuit Failure or Blockage
Parking Aid Module
Go To Pinpoint Test C .
C1701
Left Rear Sensor Circuit Fault
Parking Aid Module
Go To Pinpoint Test E .
C1702
Right Rear Sensor Circuit Short to Battery
Parking Aid Module
Go To Pinpoint Test D .
C1703
Right Rear Sensor Circuit Failure or Blockage
Parking Aid Module
Go To Pinpoint Test C .
C1704
Right Rear Sensor Circuit Fault
Parking Aid Module
Go To Pinpoint Test E .
C1705
Left Rear Center Sensor Circuit Short to Battery
Parking Aid Module
Go To Pinpoint Test D .
C1706
Left Rear Center Sensor Circuit Failure
Parking Aid Module
Go To Pinpoint Test D .
C1707
Left Rear Center Sensor Circuit Fault
Parking Aid Module
Go To Pinpoint Test E .
C1708
Right Rear Center Sensor Circuit Short to Battery
Parking Aid Module
Go To Pinpoint Test D .
C1709
Right Rear Center Sensor Circuit Failure
Parking Aid Module
Go To Pinpoint Test C .
C1710
Right Rear Center Sensor Circuit Fault
Parking Aid Module
Go To Pinpoint Test E .
C1742
Rear Sounder Circuit Failure
Parking Aid Module
Go To Pinpoint Test F .
C1743
Rear Sounder Circuit Short to Battery
Parking Aid Module
Go To Pinpoint Test F .
U1900
CAN Malfunction - Missing Message
Parking Aid Module
REPAIR all other DTCs first. REPEAT the self-test. If DTC U1900 is still present, DIAGNOSE the system for a missing transmission range signal. REFER to Section 418-00 .
U2051
One or More Calibration Files Missing/Corrupt
Parking Aid Module
REFLASH the parking aid module. If the DTC occurs after a software reflash, REFLASH the parking aid module again. If the DTC reappears after each attempt to reflash, INSTALL a new parking aid module. REFER to Parking Aid Module in this section. CLEAR all DTCs. REPEAT the self-test.
Take your vehicle to a qualified repair shop before you cause more problems .
Most Citro?n models require the bumper to removed to access the parking sensors, this sometimes incurs the removal of the rear lights and inner wheel arch trims to reach screws to remove.
Place parking brake lever in -full released- position.
Raise and support vehicle.
Remove plug in parking brake shoe support to access adjuster star-wheel.
Through the access hole, rotate the adjuster star wheel in the following direction to expand the shoes outward against the drum:
Left brake - Rotate star-wheel toward rear of vehicle.
Right brake - Rotate star-wheel toward front of vehicle.
Using an appropriate tool, turn adjuster star wheel until wheel will not rotate (dead lock).
Back off adjuster six detents (teeth).
Rotate wheel, checking for light drag. If drag is too heavy, continue to back off adjuster one detent at a time until light drag is present. Do not back off star-wheel more than 17 detents from wheel lock.
Install access plug.
Adjust opposite wheel parking brake shoes using same method.
Lower vehicle.
Apply and release parking brake lever once to ensure proper operation of parking brakes.
Removal & Installation
NOTE
The following procedure may be used to remove shoes on either side of the vehicle.
Lock out automatic adjuster in parking brake lever.
Raise and support vehicle.
Access and remove rear hub and bearing.
Remove parking brake cable bolt at knuckle.
Completely back off parking brake shoe adjustment.
Remove parking brake shoe adjuster spring.
Remove shoe adjuster.
Remove upper brake shoe hold-down clip and pin.
Remove lower brake shoe hold-down clip and pin.
Remove upper and lower shoes with return spring from shoe actuator.
Remove return spring from shoes.
Fig. View of the actuator (1), support (2), adjuster spring (3), return spring (4), caliper adapter (5), shoes (6), hold-down clips and pins (7) and adjuster (8)
To install:
Install return spring between upper and lower shoes.
NOTE
Before installing shoes on actuator, make sure actuator hooked to rear cable is positioned with word -UP- facing outward.
Install upper and lower shoes with return spring on shoe actuator located on parking brake cable.
Install lower brake shoe hold-down pin through rear of support and lower shoe, then install hold-down clip.
Install upper brake shoe hold-down pin through rear of support and upper shoe, then install hold-down clip.
Install shoe adjuster. Place end of adjuster with star wheel upward.
Install parking brake shoe adjuster spring.
Install bolt securing parking brake cable to knuckle and tighten bolt to 21 ft. lbs. (28 Nm).
Using Brake Shoe Gauge, Special Tool C-3919, or equivalent, measure inside diameter of parking brake drum portion of rotor.
Place Gauge over parking brake shoes at widest point.
Using adjuster star wheel, adjust parking brake shoes until linings on both park brake shoes just touch jaws on gauge. This will give a good preliminary adjustment of parking brake shoes, before a final adjustment is made at end of this procedure.
Install hub and bearing with wheel speed sensor as well as all components necessary to access it.
Lower vehicle.
Unlock automatic adjuster in parking brake lever.
Perform final adjustment of parking brake shoes
Adjustment
This vehicle is equipped with permanently sealed rear wheel bearings. There is no periodic lubrication or maintenance recommended for these units.
Removal & Installation
Raise and support vehicle.
Remove wheel mounting nuts, then tire and wheel assembly.
If equipped with AWD:
Remove cotter pin, nut lock and spring washer from half shaft.
While a helper applies brakes to keep hub from turning, remove hub nut and washer.
Remove brake caliper and rotor from hub and bearing assembly.
Fig. Hub assembly
Disconnect vehicle wiring harness connector at wheel speed sensor connector.
Unclip wheel speed sensor connector from spare tire mounting support.
Disconnect two sensor cable routing clips on rear suspension crossmember.
Disconnect two sensor cable routing clips along toe link.
Disconnect sensor cable from bracket on brake support.
Completely loosen, but do not remove four bolts fastening hub and bearing in place. Once loosened from threads in hub and bearing, push bolts up against rear of hub and bearing to keep brake support plate in place when hub and bearing is removed.
Fig. Rear hub and bearing mounting bolts
Pull hub and bearing off knuckle and half shaft (if equipped with AWD), then thread wheel speed sensor cable through hole in brake support plate as it is removed with hub and bearing.
To install:
Position hub and bearing bolts though rear of knuckle and parking brake support just enough to hold support in place as hub and bearing is installed.
Install hub and bearing by first feeding end of wheel speed sensor cable through hole in bottom of parking brake support. As this is being done, if equipped with AWD, slide hub and bearing onto half shaft. Place hub and bearing through brake support, onto knuckle, lining up mounting bolt holes with bolts and placing wheel speed sensor head at bottom.
Install four bolts fastening hub and bearing in place. Tighten mounting bolts to 60 ft. lbs. (81 Nm).
Place wheel speed sensor cable routing grommet into bracket on parking brake support.
Route wheel speed sensor cable along toe link and rear suspension crossmember connecting routing clips where shown.
Connect vehicle wiring harness to wheel speed sensor connector.
Install brake rotor and caliper.
If equipped with AWD:
Install washer and hub nut on end of half shaft.
While a helper applies brakes to keep hub from turning, tighten hub nut to 180 ft. lbs. (244 Nm).
Install spring washer, nut lock and cotter pin on end of half shaft.
Install tire and wheel assembly. Install and tighten wheel mounting nuts to 100 ft. lbs. (135 Nm).
Have the RSS module checked for DTC'S - diagnostic trouble code's . That should always be the first step . An it is
Reverse sensing system
Parking Aid
The parking aid system consists of the:
parking aid sensors
parking aid speaker
parking aid module
The parking aid system is activated when the parking aid module receives a network messages from the instrument cluster indicating that the vehicle is in reverse. The parking aid system sounds a warning to alert the driver of stationary objects near the rear bumper when REVERSE is selected. The parking aid system assists the driver in detecting certain objects while the vehicle moves in reverse at speeds less than 4.8 km/h (3 mph). The parking aid system may not detect angular or moving objects.
Visual Inspection Chart
Electrical
Smart junction box (SJB) fuse 18 (10A)
Circuitry
Connector(s)
Parking aid sensors
Parking aid speaker
Parking aid module
Do you know what DTC'S are .
Parking Aid Module Diagnostic Trouble Code (DTC) Index
DTC
Description
Source
Action
B1299
Power Supply Sensor Circuit Short to Ground
Parking Aid Module
Go To Pinpoint Test C .
B1342
ECU is Faulted
Parking Aid Module
CLEAR the DTCs. REPEAT the parking aid module self-test. If DTC B1342 is retrieved again, INSTALL a new parking aid module. REFER to Parking Aid Module in this section. CLEAR all DTCs. REPEAT the self-test.
B2477
Module Configuration Failure
Parking Aid Module
REFER to Section 418-01 .
C1699
Left Rear Sensor Circuit Short to Battery
Parking Aid Module
Go To Pinpoint Test D .
C1700
Left Rear Sensor Circuit Failure or Blockage
Parking Aid Module
Go To Pinpoint Test C .
C1701
Left Rear Sensor Circuit Fault
Parking Aid Module
Go To Pinpoint Test E .
C1702
Right Rear Sensor Circuit Short to Battery
Parking Aid Module
Go To Pinpoint Test D .
C1703
Right Rear Sensor Circuit Failure or Blockage
Parking Aid Module
Go To Pinpoint Test C .
C1704
Right Rear Sensor Circuit Fault
Parking Aid Module
Go To Pinpoint Test E .
C1705
Left Rear Center Sensor Circuit Short to Battery
Parking Aid Module
Go To Pinpoint Test D .
C1706
Left Rear Center Sensor Circuit Failure
Parking Aid Module
Go To Pinpoint Test D .
C1707
Left Rear Center Sensor Circuit Fault
Parking Aid Module
Go To Pinpoint Test E .
C1708
Right Rear Center Sensor Circuit Short to Battery
Parking Aid Module
Go To Pinpoint Test D .
C1709
Right Rear Center Sensor Circuit Failure
Parking Aid Module
Go To Pinpoint Test C .
C1710
Right Rear Center Sensor Circuit Fault
Parking Aid Module
Go To Pinpoint Test E .
C1742
Rear Sounder Circuit Failure
Parking Aid Module
Go To Pinpoint Test F .
C1743
Rear Sounder Circuit Short to Battery
Parking Aid Module
Go To Pinpoint Test F .
Your best bet , take it to a qualified repair shop . Ford
How do you know it's a sensor problem ? DTC - diagnostic trouble code ? Take's professional type scanner to read these DTC'S
DTC B0958 01: Parking Aid Rear Sensor 1 Left Corner Circuit Short to Battery
DTC B0958 06: Parking Aid Rear Sensor 1 Left Corner Circuit Short to Ground or Open
DTC B0958 08: Parking Aid Rear Sensor 1 Left Corner Circuit Signal Invalid
DTC B0958 21: Parking Aid Rear Sensor 1 Left Corner Circuit Incorrect Period
DTC B0959 01: Parking Aid Rear Sensor 1 Left Middle Circuit Short to Battery
DTC B0959 06: Parking Aid Rear Sensor 1 Left Middle Circuit Short to Ground or Open
DTC B0959 08: Parking Aid Rear Sensor 1 Left Middle Circuit Signal Invalid
DTC B0959 21: Parking Aid Rear Sensor 1 Left Middle Circuit Incorrect Period
Could have other codes
DTC B0967 02: Parking Aid Switch Circuit Short to Ground
DTC B1008 42: Calibration Data Not Programmed
DTC B1E3A 03: Sensor Power Circuit Voltage Below Threshold
DTC B1E3A 07: Sensor Power Circuit Voltage Above Threshold
There are a lot of other qualified repair shop's besides the Dealer .
Try to clean rear parking sensors. Check also electric cables and connections, clean if necessary. Commons faults are sensors out of order. If one or more sensors faults you hear only a continous constant noise when you put in "R" gear. You need a VAS, VAG-COM, Bosch KTS, ... diagnosis scantool. The factory parking system will be scaned from errors with this instrument, and you will find exactly which sensors are out of order (for example: rear left center sensor, rear right side sensor break off, short to ground or short to plus).
Try to clean rear parking sensors. Check also electric cables and connections, clean if necessary. Commons faults are sensors out of order. If one or more sensors faults you hear only a continous constant noise when you put in "R" gear. You need a VAS, VAG-COM, Bosch KTS, ... diagnosis scantool. The factory parking system will be scaned from errors with this instrument, and you will find exactly which sensors are out of order (for example: rear left center sensor, rear right side sensor break off, short to ground or short to plus).
Try to clean rear parking sensors. Check also electric cables and connections, clean if necessary. Commons faults are sensors out of order. If one or more sensors faults you hear only a continous constant noise when you put in "R" gear. You need a VAS, VAG-COM, Bosch KTS, ... diagnosis scantool. The factory parking system will be scaned from errors with this instrument, and you will find exactly which sensors are out of order (for example: rear left center sensor, rear right side sensor break off, short to ground or short to plus).
Is there a simpler way to access Far right rear sensor?
×