Pinpoint Test C: DTC B1B44:12, B1B46:12, B1B48:12 Or B1B50:12
WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. 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 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 C2 .
- No:
For DTC B1B44:12, B1B46:12, B1B48:12 or 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?
- Yes: GO to C3 .
- No: REPAIR or INSTALL a new bumper wiring harness. CLEAR the DTCs. TEST the system for normal operation.
- C3 CHECK THE REAR SENSOR CIRCUITRY FOR SHORTS TO VOLTAGE
- Ignition OFF.
- Disconnect: Suspect Parking Aid Sensor C4009, C4010, C4011 and/or C4012.
- Disconnect: PAM C4014.
- Ignition ON.
- Measure the voltage between the suspect parking aid sensor, harness side and ground as follows:VOLTAGE 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) - Is any voltage present?
- Yes: REPAIR the circuit in question. CLEAR the DTCs. TEST the system for normal operation.
- No:
If all sensor DTCs are set, GO to C5.
Otherwise, GO to C4 .
- C4 CHECK THE PARKING AID SENSORS
- Install a known good parking aid sensor(s) for each of the suspect parking aid sensor(s).
- Clear the DTCs. Repeat the self-test.
- Test the system for normal operation.
- Is the concern still present?
- Yes: GO to C5 .
- No: 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.
- C5 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.