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Home >> Audi >> 2014 >> A5 Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 822 (Parking Aid System) >> Diagnosis And Testing >> Parking Aid >> Pinpoint Tests >> Pinpoint Test C : DTC B1B44:12, B1B46:12, B1B48:12 Or B1B50:12 >> Pinpoint Test C : DTC B1B44:12, B1B46:12, B1B48:12 Or B1B50:12

Pinpoint Test C : DTC B1B44:12, B1B46:12, B1B48:12 Or B1B50:12

WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Before disconnecting the PAM or any of the sensors, verify that the connectors are properly seated and latched.

  1. C1 CHECK THE PAM DTCs

    • Ignition ON.
    • Using a scan tool, perform the PAM self-test.

    Are multiple rear parking aid sensor DTCs recorded? 

    Yes  GO to  C2.
    No  GO to  C3.

  2. C2 CHECK THE REAR BUMPER WIRING HARNESS

    • Inspect the rear bumper wiring harness for opens, shorts, grounds, or corrosion.

    Is the rear bumper wiring harness OK? 

    Yes  GO to  C3.
    No  REPAIR or INSTALL a new rear bumper wiring harness.

  3. C3 CHECK THE REAR SENSOR SIGNAL CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition OFF.
    • Ignition ON.
    • Measure:

      DTC B1B44:12 

      Positive Lead Measurement / Action Negative Lead
      C4011-2
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground

      DTC B1B46:12 

      Positive Lead Measurement / Action Negative Lead
      C4012-2
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground

      DTC B1B48:12 

      Positive Lead Measurement / Action Negative Lead
      C4009-2
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground

      DTC B1B50:12 

      Positive Lead Measurement / Action Negative Lead
      C4010-2
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit(s) in question.
    No  GO to  C4.

  4. C4 CHECK THE REAR SENSOR VOLTAGE SUPPLY AND SIGNAL CIRCUITS FOR A SHORT TOGETHER

    • Ignition OFF.
    • Measure:

      DTC B1B44:12 

      Positive Lead Measurement / Action Negative Lead
      C4011-2
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C4011-1

      DTC B1B46:12 

      Positive Lead Measurement / Action Negative Lead
      C4012-2
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C4012-1

      DTC B1B48:12 

      Positive Lead Measurement / Action Negative Lead
      C4009-2
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C4009-1

      DTC B1B50:12 

      Positive Lead Measurement / Action Negative Lead
      C4010-2
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C4010-1

    Is the resistance greater than 10, 000 ohms? 

    Yes  If all of the parking aid sensors recorded DTCs, GO to  C5.If one or more (but not all) parking aid sensor(s) recorded DTCs, INSTALL a new sensor(s) for the one in question. REFER to Parking Aid Sensor - Rear .
    No  REPAIR the circuits in question.

  5. C5 CHECK FOR CORRECT PAM OPERATION

    • Disconnect and inspect the PAM connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Reconnect the PAM 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 TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, INSTALL a new PAM. REFER to Parking Aid Module (PAM) .
    No  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
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