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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 598 (Parking Aid System) >> Diagnosis And Testing >> Parking Aid >> Pinpoint Tests >> Pinpoint Test I : DTC B1B53:12 Or DTC B1B53:14 >> Pinpoint Test I : DTC B1B53:12 Or DTC B1B53:14

Pinpoint Test I : DTC B1B53:12 Or DTC B1B53:14

WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Before disconnecting the PAM or the speaker, verify that the connectors are properly seated and latched.

  1. I1 CHECK THE SPEAKER CONNECTOR FOR CORRECT LATCHING

    • Ignition OFF.
    • Inspect the front parking aid speaker connector C2024 for correct latching by pulling on the latched connector.

    Is the connector latched? 

    Yes  GO to  I2.
    No  Correctly latch the connector.

  2. I2 MEASURE THE PARKING AID SPEAKER RESISTANCE

    • Disconnect: Front Parking Aid Speaker C2024 .
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2024-2
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C2024-1

    Is the resistance between 40 and 60 ohms? 

    Yes  If DTC B1B53:14 was recorded, GO to  I3.If DTC B1B53:12 was recorded, GO to  I6.
    No  INSTALL a new front parking aid speaker. REFER to Parking Aid Speaker .

  3. I3 CHECK THE FRONT PARKING AID SPEAKER CIRCUITS FOR A SHORT TO GROUND

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2024-1
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 Ground
      C2024-2
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are the resistances greater than 10, 000 ohms? 

    Yes  GO to  I4.
    No  REPAIR the circuit in question.

  4. I4 CHECK THE FRONT PARKING AID SPEAKER CIRCUITS FOR AN OPEN

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2024-1
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C4014B-7

      Positive Lead Measurement / Action Negative Lead
      C2024-2
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C4014A-2

    Are the resistances less than 3 ohms? 

    Yes  GO to  I5.
    No  REPAIR the circuit in question.

  5. I5 CHECK THE FRONT PARKING AID SPEAKER CIRCUITS FOR A SHORT TOGETHER

    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2024-1
      GFD134423Courtesy of FORD MOTOR COMPANY
      		 C2024-2

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  I7.
    No  REPAIR the circuits.

  6. I6 CHECK THE FRONT PARKING AID SPEAKER CIRCUITS FOR A SHORT TO VOLTAGE

    • Ignition ON.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C2024-2
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground
      C2024-1
      GFD134422Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is any voltage present? 

    Yes  REPAIR the circuit in question.
    No  GO to  I7.

  7. I7 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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