PINPOINT TEST B: DTCs B1B44:01, 96; B1B46:01, 96; B1B48:01, 96; B1B50:01, 96

WARNING: This page is about a different car, the 2014 Ford F-150. 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.

B1 RETRIEVE THE DTCs FROM BOTH THE CONTINUOUS AND ON-DEMAND PAM SELF-TESTS
- Check the PAM DTCs from the continuous and on-demand self-tests.
Are multiple DTCs recorded?
- Yes : GO to B2 .
- No : For DTC B1B44:01, B1B44:96, B1B46:01, B1B46:96, B1B48:01, B1B48:96, B1B50:01 or B1B50:96, GO to B3.
  For all other DTCs, REFER to DTC CHARTS .
B2 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 B3 .
- No : REPAIR or INSTALL a new bumper wiring harness. CLEAR the DTCs. REPEAT the self-test.

B3 CHECK THE SENSOR CIRCUITRY FOR OPENS

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

Measure the resistance between the PAM C2023 , harness side and the suspect parking aid sensor, harness side as follows:

DTC	Rear Sensor	PAM Connector-Pin	Sensor Connector-Pin	Circuit
B1B44:01, 96	RH outer	C2023-9	C4011-1	VMP17 (YE/OG)
		C2023-13	C4011-3	RMP07 (GN/WH)
B1B46:01, 96	RH inner	C2023-10	C4012-1	VMP16 (YE/GY)
		C2023-13	C4012-3	RMP07 (GN/WH)
B1B48:01, 96	LH outer	C2023-12	C4009-1	VMP15 (YE/GN)
		C2023-13	C4009-3	RMP07 (GN/WH)
B1B50:01, 96	LH inner	C2023-11	C4010-1	VMP14 (WH/OG)
		C2023-13	C4010-3	RMP07 (GN/WH)

Fig 1: Measuring Resistance Between PAM C2023 And Parking Aid Sensor

Courtesy of FORD MOTOR CO.

Are the resistances less than 5 ohms?

Yes : GO to B4 .
No : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.

B4 CHECK THE SENSOR CIRCUITRY FOR SHORTS TO GROUND

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

DTC	Rear Sensor	Connector-Pin	Circuit
B1B44:01, 96	RH outer	C4011-1	VMP17 (YE/OG)
B1B46:01, 96	RH inner	C4012-1	VMP16 (YE/GY)
B1B48:01, 96	LH outer	C4009-1	VMP15 (YE/GN)
B1B50:01, 96	LH inner	C4010-1	VMP14 (WH/OG)

Fig 2: Measuring Resistance Between Parking Aid Sensor, Harness Side And Ground

Courtesy of FORD MOTOR CO.

Is the resistance greater than 10, 000 ohms?

Yes : GO to B5 .
No : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.

B5 CHECK THE PARKING AID SENSOR CIRCUITRY FOR A SHORT TOGETHER

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

DTC	Parking Aid Sensor	Connector-Pin/Circuit	Connector-Pin/Circuit
B1B44:01, 96	RH outer	C4011-1 VMP17 (YE/OG)	C4011-3 RMP07 (GN/WH)
B1B46:01, 96	RH inner	C4012-1 VMP16 (YE/GY)	C4012-3 RMP07 (GN/WH)
B1B48:01, 96	LH outer	C4009-1 VMP15 (YE/GN)	C4009-3 RMP07 (GN/WH)
B1B50:01, 96	LH inner	C4010-1 VMP14 (WH/OG)	C4010-3 RMP07 (GN/WH)

Fig 3: Measuring Resistance Between Parking Aid Sensor Pins And Harness Side

Courtesy of FORD MOTOR CO.

Is the resistance greater than 10, 000 ohms?

Yes : GO to B6 .
No : REPAIR the circuits in question. CLEAR the DTCs. TEST the system for normal operation.

B6 CHECK THE SENSOR CIRCUITRY FOR SHORTS TO VOLTAGE

Ignition ON.

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

DTC	Rear Sensor	Connector-Pin	Circuit
B1B44:01, 96	RH outer	C4011-1	VMP17 (YE/OG)
B1B46:01, 96	RH inner	C4012-1	VMP16 (YE/GY)
B1B48:01, 96	LH outer	C4009-1	VMP15 (YE/GN)
B1B50:01, 96	LH inner	C4010-1	VMP14 (WH/OG)

Fig 4: Measuring Voltage Between Parking Aid Sensor, Harness Side And Ground

Courtesy of FORD MOTOR CO.

Is any voltage present?

Yes : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
No : If all of the parking aid sensors recorded DTCs, GO to B7 .
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. REPEAT the self-test.

B7 CHECK FOR CORRECT PAM OPERATION
- 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?
- Yes : INSTALL a new PAM . REFER to PARKING AID MODULE (PAM) . TEST the system for normal operation.
- 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.