Pinpoint Test F : DTC (Diagnostic Trouble Code) B13F3:14, DTC (Diagnostic Trouble Code) B13F4:14

F1 CHECK THE DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PAM (PARKING ASSIST CONTROL MODULE) SELF-TEST

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may cause damage to the connector. Use only Rotunda Flex Probes (NUD105-R025D)

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 F2

No	For DTC B13F3:14 or DTC B13F4:14 GO to F3 For all other PAM Diagnostic Trouble Codes (DTCs), REFER to the DTC chart .

F2 CHECK THE REAR BUMPER WIRING HARNESS
- Inspect the rear bumper wiring harness for opens, shorts, grounds or corrosion.
Is the rear bumper wiring harness OK?

Yes GO to F3

No REPAIR or INSTALL a new rear bumper wiring harness.

F3 CHECK THE SENSOR CIRCUITS FOR OPENS

Ignition OFF.

Disconnect suspect rear active park assist sensor(s) C4420 (DTC B13F3:14) or C4421 (DTC B13F4:14).

Disconnect BCM C2280E .

Measure:

DTC B13F3:14

Positive Lead	Measurement / Action	Negative Lead
C2280E-26	Courtesy of FORD MOTOR COMPANY	C4420-1
C2280E-25	Courtesy of FORD MOTOR COMPANY	C4420-2
C2280E-27	Courtesy of FORD MOTOR COMPANY	C4420-3

DTC B13F4:14

Positive Lead	Measurement / Action	Negative Lead
C2280E-26	Courtesy of FORD MOTOR COMPANY	C4421-1
C2280E-9	Courtesy of FORD MOTOR COMPANY	C4421-2
C2280E-27	Courtesy of FORD MOTOR COMPANY	C4421-3

Are the resistances less than 3 ohms?

Yes

GO to F4

No	REPAIR the affected circuit(s).

F4 CHECK THE SENSOR SIGNAL RETURN CIRCUIT FOR A SHORT TO GROUND

Measure:

DTC B13F3:14

Positive Lead	Measurement / Action	Negative Lead
C4420-2	Courtesy of FORD MOTOR COMPANY	Ground

DTC B13F4:14

Positive Lead	Measurement / Action	Negative Lead
C4421-2	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to F5

No	REPAIR the circuit.

F5 CHECK THE REAR ACTIVE PARK ASSIST SENSOR

Connect BCM C2280E .

Install a known good rear active park assist sensor for the suspect sensor. REFER to: Rear Active Park Assist Sensors .

Ignition ON.

Using a diagnostic scan tool, clear the PAM Diagnostic Trouble Codes (DTCs).

Perform the PAM self-test.

Is DTC B13F3:14 or DTC B13F4:14 still present?

Yes

GO to F6

No	INSTALL a new rear active park assist sensor for the one in question. REFER to: Rear Active Park Assist Sensors .

F6 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all BCM connectors 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 BCM connectors 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 Technical Service Bulletins (TSBs) address this concern, Refer to BCM Hardware Testing .

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.