Pinpoint Test H : B1B36:14, B1B38:14, B1B40:14, B1B42:14

WARNING: This page is about a different car, the 2019 Lincoln MKZ. However, it is still accessible from the selected car via links, so may be relevant.

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).

Are multiple front 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 DTC Chart: Parking Aid Module (PAM) .

H2 CHECK THE FRONT BUMPER WIRING HARNESS
- Ignition OFF.
- 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 PARKING AID SENSOR CIRCUITRY FOR OPENS

Disconnect: Suspect Parking Aid Sensor(s).

Disconnect: BCM C2280C.

For DTC B1B36:14, measure:

Positive Lead	Measurement / Action	Negative Lead
C2280C-7	Courtesy of FORD MOTOR COMPANY	C1431-1
C2280C-21	Courtesy of FORD MOTOR COMPANY	C1431-2
C2280C-35	Courtesy of FORD MOTOR COMPANY	C1431-3

For DTC B1B38:14, measure:

Positive Lead	Measurement / Action	Negative Lead
C2280C-7	Courtesy of FORD MOTOR COMPANY	C1430-1
C2280C-22	Courtesy of FORD MOTOR COMPANY	C1430-2
C2280C-35	Courtesy of FORD MOTOR COMPANY	C1430-3

For DTC B1B40:14, measure:

Positive Lead	Measurement / Action	Negative Lead
C2280C-7	Courtesy of FORD MOTOR COMPANY	C1428-1
C2280C-31	Courtesy of FORD MOTOR COMPANY	C1428-2
C2280C-35	Courtesy of FORD MOTOR COMPANY	C1428-3

For DTC B1B42:14, measure:

Positive Lead	Measurement / Action	Negative Lead
C2280C-7	Courtesy of FORD MOTOR COMPANY	C1429-1
C2280C-32	Courtesy of FORD MOTOR COMPANY	C1429-2
C2280C-35	Courtesy of FORD MOTOR COMPANY	C1429-3

Are the resistances of the suspect sensor circuits less than 3 ohms?

Yes

GO to H4

No	REPAIR the circuit in question.

H4 CHECK THE FRONT PARKING AID SENSOR CIRCUITRY FOR SHORTS TO GROUND

For DTC B1B36:14, measure:

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

For DTC B1B38:14, measure:

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

For DTC B1B40:14, measure:

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

For DTC B1B42:14, measure:

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. REFER to: Front Parking Aid Sensor .

No	REPAIR the circuit in question.

H5 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all BCM and all 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 BCM and all 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 TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, refer to BCM Guided Routine Testing .

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