Pinpoint Test C: B1B58:11

C1 CHECK THE REAR BUMPER WIRING HARNESS
- Ignition OFF.
- Inspect the rear bumper wiring harness for opens, shorts, grounds, or corrosion.
Is the bumper wiring harness OK?

Yes GO to C2

No REPAIR or INSTALL a new bumper wiring harness.

C2 CHECK THE LHR (LEFT-HAND REAR) OUTER PARKING AID SENSOR FOR AN INTERNAL SHORT
- Disconnect: LHR Outer Parking Aid Sensor C4009.
- Ignition ON.
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.
Is DTC B1B58:11 present?

Yes GO to C3

No INSTALL a new LHR outer parking aid sensor. REFER to: Rear Parking Aid Sensor

C3 CHECK THE LHR (LEFT-HAND REAR) INNER PARKING AID SENSOR FOR AN INTERNAL SHORT
- Ignition OFF.
- Disconnect: LHR Inner Parking Aid Sensor C4010.
- Ignition ON.
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.
Is DTC B1B58:11 present?

Yes GO to C4

No INSTALL a new LHR inner parking aid sensor. REFER to: Rear Parking Aid Sensor

C4 CHECK THE RHR (RIGHT-HAND REAR) INNER PARKING AID SENSOR FOR AN INTERNAL SHORT
- Ignition OFF.
- Disconnect: RHR Inner Parking Aid Sensor C4012.
- Ignition ON.
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.
Is DTC B1B58:11 present?

Yes GO to C5

No INSTALL a new RHR inner parking aid sensor. REFER to: Rear Parking Aid Sensor

C5 CHECK THE RHR (RIGHT-HAND REAR) OUTER PARKING AID SENSOR FOR AN INTERNAL SHORT

Ignition OFF.

Disconnect: RHR Outer Parking Aid Sensor C4011.

Ignition ON.

Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.

Is DTC B1B58:11 present?

Yes	If the vehicle is equipped with rear side active park assist sensors, GO to C6 If the vehicle is not equipped with rear side active park assist sensors, GO to C8

No	INSTALL a new RHR outer parking aid sensor. REFER to: Rear Parking Aid Sensor

C6 CHECK THE RHR (RIGHT-HAND REAR) SIDE ACTIVE PARK ASSIST SENSOR FOR AN INTERNAL SHORT
- Ignition OFF.
- Disconnect: RHR side active park assist sensor C4421.
- Ignition ON.
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.
Is DTC B1B58:11 present?

Yes GO to C7

No INSTALL a new RHR side active park assist sensor. REFER to: Rear Parking Aid Sensor

C7 CHECK THE LHR (LEFT-HAND REAR) SIDE ACTIVE PARK ASSIST SENSOR FOR AN INTERNAL SHORT
- Ignition OFF.
- Disconnect: LHR Side Active Park Assist Sensor C4420.
- Ignition ON.
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the PAM self-test.
Is DTC B1B58:11 present?

Yes GO to C8

No INSTALL a new LHR side active park assist sensor. REFER to: Rear Parking Aid Sensor

C8 CHECK THE REAR PARKING AID SENSOR VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO GROUND

Ignition OFF.

Disconnect: BCM C2280E.

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280E-26	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance greater than 10, 000 ohms?

Yes

GO to C9

No	REPAIR the circuit.

C9 CHECK THE PARKING AID SENSOR VOLTAGE SUPPLY CIRCUIT AND GROUND CIRCUIT FOR A SHORT TOGETHER

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2280E-26	Courtesy of FORD MOTOR COMPANY	C2280E-27

Is the resistance greater than 10, 000 ohms?

Yes

GO to C10

No	REPAIR the circuit.

C10 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION

Ignition OFF.

Disconnect and inspect all BCM 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 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, A guided routine is not applicable for this vehicle and market. Replace the component that was faulted through diagnosis.

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.