Pinpoint Test B : B1B57:11

B1 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 B2

No REPAIR or INSTALL a new bumper wiring harness.

B2 CHECK THE LHF (LEFT-HAND FRONT) OUTER PARKING AID SENSOR FOR AN INTERNAL SHORT
- Ignition OFF.
- Disconnect: LHF Outer Parking Aid Sensor connector C1428 .
- Ignition ON.
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and carry out the PAM self-test.
Is DTC B1B57:11 still present?

Yes GO to B3

No INSTALL a new LHF outer parking aid sensor. REFER to: Front Parking Aid Sensor .

B3 CHECK THE LHF (LEFT-HAND FRONT) INNER PARKING AID SENSOR FOR AN INTERNAL SHORT
- Ignition OFF.
- Disconnect: LHF Inner Parking Aid Sensor connector C1429 .
- Ignition ON.
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the self-test.
Is DTC B1B57:11 still present?

Yes GO to B4

No INSTALL a new LHF inner parking aid sensor. REFER to: Front Parking Aid Sensor .

B4 CHECK THE RHF (RIGHT-HAND FRONT) OUTER PARKING AID SENSOR FOR AN INTERNAL SHORT
- Ignition OFF.
- Disconnect: RHF Outer Parking Aid Sensor connector C1431 .
- Ignition ON.
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the self-test.
Is DTC B1B57:11 still present?

Yes GO to B5

No INSTALL a new RH front outer parking aid sensor. REFER to: Front Parking Aid Sensor .

B5 CHECK THE RHF (RIGHT-HAND FRONT) INNER PARKING AID SENSOR FOR AN INTERNAL SHORT
- Ignition OFF.
- Disconnect: RHF Inner Parking Aid Sensor connector C1430 .
- Ignition ON.
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the self-test.
Is DTC B1B57:11 still present?

Yes GO to B6

No INSTALL a new RHF inner parking aid sensor. REFER to: Front Parking Aid Sensor .

B6 CHECK THE PARKING AID SENSOR VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect: PAM connector C4014B.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C4014B-2	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to B7

No	REPAIR the circuit.

B7 CHECK THE PARKING AID SENSOR HARNESS FOR A SHORT FROM VOLTAGE SUPPLY TO GROUND RETURN

Measure:

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

Is the resistance greater than 10, 000 ohms?

Yes

GO to B8

No	REPAIR the circuit in question.

B8 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.