PINPOINT TEST C: DTCs B1B44:12, B1B46:12, B1B48:12 AND B1B50:12

WARNING: This page is about a different car, the 2011 Ford Pickup, 2011 Ford F550 Super Duty, 2011 Ford F450 Super Duty, and 2011 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

C1 RETRIEVE THE DTCs FROM THE PAM SELF-TEST
- Check the PAM DTCs from the self-test.
- Are multiple DTCs recorded?
1. Yes: GO to C2.
2. No: For DTCs B1B44:12, B1B46:12, B1B48:12 and B1B50:12, GO to C3. For all other DTCs, REFER to DTC CHARTS .
C2 CHECK THE BUMPER WIRING HARNESS
- Inspect the bumper wiring harness for opens, shorts, grounds, or corrosion.
- Is the bumper wiring harness OK?
1. Yes: GO to C3.
2. No: REPAIR or INSTALL a new bumper wiring harness. CLEAR the DTCs. REPEAT the self-test.

C3 CHECK THE SENSOR CIRCUITRY FOR SHORTS TO VOLTAGE

Ignition OFF.
Disconnect: Suspect Parking Aid Sensor C4009, C4010, C4011 or C4012.
Disconnect: PAM C2023.
Ignition ON.

Measure the voltage between the suspect parking aid sensor, harness side and ground as follows:

CONNECTOR-PIN REFERENCE CHART

DTC	Rear Sensor	Connector- Pin	Circuit
B1B44:12	RH outer	C4011-2	VMP17 (YE/OG)
B1B46:12	RH inner	C4012-2	VMP16 (YE/GY)
B1B48:12	LH outer	C4009-2	VMP15 (YE/GN)
B1B50:12	LH inner	C4010-2	VMP14 (WH/OG)

Fig 1: Measuring Voltage Between Suspect Parking Aid Sensor Pin 2 And Ground Connector End View

Courtesy of FORD MOTOR CO.

Is any voltage present?

Yes: REPAIR the circuit in question. CLEAR the DTCs. TEST the system for normal operation.
No: GO to C4.

C4 CHECK THE PARKING AID SENSOR CIRCUITRY FOR A SHORT TOGETHER

Measure the resistance between the suspect parking aid sensor pins, harness side as follows:

CONNECTOR-PIN REFERENCE CHART

DTC	Parking Aid Sensor	Connector- Pin/Circuit	Connector- Pin/Circuit
B1B44:12	RH outer	C4011-2 VMP17 (YE/OG)	C4011-1 LMP07 (BU/WH)
B1B46:12	RH inner	C4012-2 VMP16 (YE/GY)	C4012-1 LMP07 (BU/WH)
B1B48:12	LH outer	C4009-2 VMP15 (YE/GN)	C4009-1 LMP07 (BU/WH)
B1B50:12	LH inner	C4010-2 VMP14 (WH/OG)	C4010-1 LMP07 (BU/WH)

Fig 2: Measuring Resistance Between Suspect Parking Aid Sensor Pins Connector End View

Courtesy of FORD MOTOR CO.

Is the resistance greater than 10,000 ohms?

Yes: If all sensor DTCs are set, GO to C5.
If one or more parking aid sensor(s) recorded DTCs, INSTALL a new sensor(s) for the one in question. REFER to PARKING AID SENSOR . CLEAR the DTCs. TEST the system for normal operation.
No: REPAIR the circuits in question. CLEAR the DTCs. TEST the system for normal operation.

C5 CHECK FOR CORRECT PAM OPERATION
- Connect: All Disconnected Connectors.
- Disconnect the PAM connector.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect the PAM connector and make sure it seats correctly.
- Operate the system and determine if the concern is still present.
- Is the concern still present?
1. Yes: INSTALL a new PAM . REFER to PARKING AID MODULE (PAM) . TEST the system for normal operation.
2. No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.