Pinpoint Test H : B1B36: 14, B1B38: 14, B1B40: 14, B1B42: 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 B1B36: 14	Right Front Outer Sensor: Circuit Short To Ground Or Open	A continuous and on-demand DTC that sets in the PAM when of the RHF outer parking aid sensor circuits are open or the sensor signal line is shorted to ground.
PAM B1B38: 14	Right Front Inner Sensor: Circuit Short To Ground Or Open	A continuous and on-demand DTC that sets in the PAM when the RHF front inner parking aid sensor circuits are open or the sensor signal line is shorted to ground.
PAM B1B40: 14	Left Front Outer Sensor: Circuit Short To Ground Or Open	A continuous and on-demand DTC that sets in the PAM when the LHF outer parking aid sensor circuits are open or the sensor signal line is shorted to ground.
PAM B1B42: 14	Left Front Inner Sensor: Circuit Short To Ground Or Open	A continuous and on-demand DTC that sets in the PAM when of the LHF inner parking aid sensor circuits are open or the sensor signal line is shorted to ground.

Possible Sources

Wiring, terminals or connectors
Front parking aid sensor
PAM

H1 RETRIEVE THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

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

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

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

Yes

GO to H2

No	For DTC B1B36: 14, B1B38: 14, B1B40: 14 or B1B42: 14 GO to H3 For all other Diagnostic Trouble Codes (DTCs), REFER to Diagnostic Trouble Code (DTC) Chart in this information.

H2 CHECK THE FRONT BUMPER WIRING HARNESS
- Inspect the front bumper wiring harness for opens, shorts, grounds or corrosion.
Is the front bumper wiring harness OK?

Yes GO to H3

No REPAIR or INSTALL a new front bumper wiring harness.

H3 CHECK THE FRONT SENSOR CIRCUITRY FOR OPENS

Ignition OFF.

Disconnect: Suspect Parking Aid Sensor(s).

Disconnect: PAM C4014B.

Measure:

DTC B1B36: 14

Positive Lead	Measurement / Action	Negative Lead
C4014B-2	Courtesy of FORD MOTOR COMPANY	C1431-1
C4014B-3	Courtesy of FORD MOTOR COMPANY	C1431-2
C4014B-12	Courtesy of FORD MOTOR COMPANY	C1431-3

Measure:

DTC B1B38: 14

Positive Lead	Measurement / Action	Negative Lead
C4014B-2	Courtesy of FORD MOTOR COMPANY	C1430-1
C4014B-9	Courtesy of FORD MOTOR COMPANY	C1430-2
C4014B-12	Courtesy of FORD MOTOR COMPANY	C1430-3

Measure:

DTC B1B40: 14

Positive Lead	Measurement / Action	Negative Lead
C4014B-2	Courtesy of FORD MOTOR COMPANY	C1428-1
C4014B-10	Courtesy of FORD MOTOR COMPANY	C1428-2
C4014B-12	Courtesy of FORD MOTOR COMPANY	C1428-3

Measure:

DTC B1B42: 14

Positive Lead	Measurement / Action	Negative Lead
C4014B-2	Courtesy of FORD MOTOR COMPANY	C1429-1
C4014B-4	Courtesy of FORD MOTOR COMPANY	C1429-2
C4014B-12	Courtesy of FORD MOTOR COMPANY	C1429-3

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

Yes

GO to H4

No	REPAIR the circuit in question.

H4 CHECK THE FRONT SENSOR SIGNAL CIRCUITS FOR SHORTS TO GROUND

Measure:

DTC B1B36: 14

Positive Lead	Measurement / Action	Negative Lead
C1431-2	Courtesy of FORD MOTOR COMPANY	Ground

Measure:

DTC B1B38: 14

Positive Lead	Measurement / Action	Negative Lead
C1430-2	Courtesy of FORD MOTOR COMPANY	Ground

Measure:

DTC B1B40: 14

Positive Lead	Measurement / Action	Negative Lead
C1428-2	Courtesy of FORD MOTOR COMPANY	Ground

Measure:

DTC B1B42: 14

Positive Lead	Measurement / Action	Negative Lead
C1429-2	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 H5 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.

H5 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.