Pinpoint Test E : B1B44:12, B1B46:12. B1B48:12, B1B50:12

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

E1 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 E2

No	For Diagnostic Trouble Codes (DTCs) B1B44:12, B1B46:12. B1B48:12, and B1B50:12 GO to E3 For all other Diagnostic Trouble Codes (DTCs), REFER to the Diagnostic Trouble Code (DTC) Chart: Parking Aid Module .

E2 CHECK THE BUMPER WIRING HARNESS
- Inspect the bumper wiring harness for opens, shorts, grounds, or corrosion.
Is the bumper wiring harness OK?

Yes GO to E3

No REPAIR or INSTALL a new bumper wiring harness.

E3 CHECK THE SENSOR CIRCUITRY FOR SHORTS TO VOLTAGE

Ignition OFF.

Disconnect: Suspect Parking Aid Sensor(s).

Ignition ON.

Measure:

DTC B1B44:12,

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

Measure:

DTC B1B46:12

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

Measure:

DTC B1B48:12

Positive Lead	Measurement / Action	Negative Lead
C4228-2	Courtesy of FORD MOTOR COMPANY	Ground

Measure:

DTC B1B50:12

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

Is any voltage present?

Yes	REPAIR the circuit in question.

GO to E4

E4 CHECK THE PARKING AID SENSOR CIRCUITRY FOR A SHORT TOGETHER

Ignition OFF

Disconnect PAM connector C4014C

Measure:

DTC B1B44:12

Positive Lead	Measurement / Action	Negative Lead
C4011-2	Courtesy of FORD MOTOR COMPANY	C4011-1

Measure:

DTC B1B46:12

Positive Lead	Measurement / Action	Negative Lead
C4012-2	Courtesy of FORD MOTOR COMPANY	C4228-1

Measure:

DTC B1B48:12

Positive Lead	Measurement / Action	Negative Lead
C4009-2	Courtesy of FORD MOTOR COMPANY	C4009-1

Measure:

DTC B1B50:12

Positive Lead	Measurement / Action	Negative Lead
C4228-2	Courtesy of FORD MOTOR COMPANY	C4011-1

Is the resistance greater than 10, 000 ohms?

Yes	If all the sensor Diagnostic Trouble Codes (DTCs) are set, GO to E5 If one or more parking aid sensor(s) recorded Diagnostic Trouble Codes (DTCs), INSTALL a new sensor(s) for the one in question. REFER to: Rear Parking Aid Sensor .

No	REPAIR the circuits in question.

E5 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) - 4-Door . REFER to: Parking Assist Control Module (PAM) - 5-Door .

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.