Pinpoint Test D : B1B44: 14, B1B46: 14, B1B48: 14, B1B50: 14

WARNING: This page is about a different car, the 2018 Ford EcoSport. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Before disconnecting the PAM or any of the parking aid sensors, verify the connectors are properly seated and latched.

Normal Operation and Fault Conditions

REFER to: Parking Aid - System Operation and Component Description .

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PAM B1B44: 14	Right Rear Outer Sensor: Circuit Short To Ground Or Open	A continuous and on-demand DTC that sets in the PAM when the RHR outer parking aid sensor circuits are open or the sensor signal line is shorted to ground.
PAM B1B46: 14	Right Rear Inner Sensor: Circuit Short To Ground Or Open	A continuous and on-demand DTC that sets in the PAM when the RHR inner parking aid sensor circuits are open or the sensor signal line is shorted to ground.
PAM B1B48: 14	Left Rear Outer Sensor: Circuit Short To Ground Or Open	A continuous and on-demand DTC that sets in the PAM when the LHR outer parking aid sensor circuits are open or the sensor signal line is shorted to ground.
PAM B1B50: 14	Left Rear Inner Sensor: Circuit Short To Ground Or Open	A continuous and on-demand DTC that sets in the PAM when the LHR inner parking aid sensor circuits are open or the sensor signal line is shorted to ground.

Possible Sources

Wiring, terminals or connectors
Rear Parking aid sensor
PAM

D1 RETRIEVE THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

Ignition ON.

Using a diagnostic scan tool, perform the PAM self-test.

Check the PAM Diagnostic Trouble Codes (DTCs) from the self-test.

Are multiple rear parking aid sensor Diagnostic Trouble Codes (DTCs) recorded?

Yes

GO to D2

No	For DTC B1B44: 14, B1B46: 14, B1B48: 14, or B1B50: 14 GO to D3 For all other Diagnostic Trouble Codes (DTCs), REFER to Diagnostic Trouble Code (DTC) Chart in this information.

D2 CHECK THE REAR BUMPER WIRING HARNESS
- Ignition OFF.
- Inspect the rear bumper wiring harness for opens, shorts, grounds, or corrosion.
Is the rear bumper wiring harness OK?

Yes GO to D3

No REPAIR or INSTALL a new bumper wiring harness.

D3 CHECK THE REAR SENSOR CIRCUITRY FOR OPENS

Ignition OFF.

Disconnect: Suspect Parking Aid Sensor(s).

Disconnect: PAM C4014A.

Measure:

DTC B1B44: 14

Positive Lead	Measurement / Action	Negative Lead
C4014A-3	Courtesy of FORD MOTOR COMPANY	Refer to C4011-1
C4014A-5	Courtesy of FORD MOTOR COMPANY	Refer to C4011-2
C4014A-10	Courtesy of FORD MOTOR COMPANY	Refer to C4011-3

Measure:

DTC B1B46: 14

Positive Lead	Measurement / Action	Negative Lead
C4014A-3	Courtesy of FORD MOTOR COMPANY	Refer to C4012-1
C4014A-15	Courtesy of FORD MOTOR COMPANY	Refer to C4012-2
C4014A-10	Courtesy of FORD MOTOR COMPANY	Refer to C4012-3

Measure:

DTC B1B48: 14

Positive Lead	Measurement / Action	Negative Lead
C4014A-3	Courtesy of FORD MOTOR COMPANY	Refer to C4009-1
C4014A-16	Courtesy of FORD MOTOR COMPANY	Refer to C4009-2
C4014A-10	Courtesy of FORD MOTOR COMPANY	Refer to C4009-3

Measure:

DTC B1B50: 14

Positive Lead	Measurement / Action	Negative Lead
C4014A-3	Courtesy of FORD MOTOR COMPANY	Refer to C4010-1
C4014A-6	Courtesy of FORD MOTOR COMPANY	Refer to C4010-2
C4014A-10	Courtesy of FORD MOTOR COMPANY	Refer to C4010-3

Is the resistance for the suspect sensor circuit less than 3 ohms?

Yes

GO to D4

No	REPAIR the circuit in question.

D4 CHECK THE REAR SENSOR SIGNAL CIRCUITRY FOR SHORTS TO GROUND

Measure:

DTC B1B44: 14

Positive Lead	Measurement / Action	Negative Lead
Refer to C4011-2	Courtesy of FORD MOTOR COMPANY	Ground

Measure:

DTC B1B46: 14

Positive Lead	Measurement / Action	Negative Lead
Refer to C4012-2	Courtesy of FORD MOTOR COMPANY	Ground

Measure:

DTC B1B48: 14

Positive Lead	Measurement / Action	Negative Lead
Refer to C4009-2	Courtesy of FORD MOTOR COMPANY	Ground

Measure:

DTC B1B50: 14

Positive Lead	Measurement / Action	Negative Lead
Refer to C4010-2	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms for the sensor circuit in question?

Yes	If all of the parking aid sensors recorded Diagnostic Trouble Codes (DTCs), GO to D5 If one or more (but not all) parking aid sensor(s) recorded Diagnostic Trouble Codes (DTCs), INSTALL a new sensor(s) for the one(s) in question.

No	REPAIR the circuit in question.

D5 CHECK FOR CORRECT PAM (PARKING ASSIST CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all PAM and related in-line connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the PAM and related in-line connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes	CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no TSB addresses this concern, INSTALL a new PAM. REFER to: Parking Assist Control Module (PAM) .

No	The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.