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Pinpoint Test

  1. CHECK THE Global Positioning System Module (GPSM) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
    1. Ignition OFF.
    2. Disconnect: Global Positioning System Module (GPSM).
    3. Ignition ON.
    4. Measure:
      Fig 1: Measuring Global Positioning System Module (GPSM) Connector Terminal
      G07428980Courtesy of FORD MOTOR CO.
      • Is the voltage greater than 11 volts? 
      1. Yes:  GO to 2  on page 2.
      2. No:  VERIFY the Body Control Module (BCM) fuse 29 (20A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the SYSTEM WIRING DIAGRAMS to identify the possible causes of the circuit short.
  2. CHECK THE Global Positioning System Module (GPSM) GROUND CIRCUIT FOR AN OPEN
    1. Ignition OFF.
    2. Measure:
      Fig 2: Measuring Global Positioning System Module (GPSM) Connector Terminal
      G07428981Courtesy of FORD MOTOR CO.
      • Is the resistance less than 3 ohms? 
      1. Yes:  GO to 3  on page 3.
      2. No:  REPAIR the circuit.
  3. CHECK THE Medium Speed Controller Area Network (MS-CAN) CIRCUITS BETWEEN THE Global Positioning System Module (GPSM) AND THE Data Link Connector (DLC) FOR AN OPEN
    1. Measure:
      Fig 3: Measuring Medium Speed Controller Area Network (MS-CAN) Connector Terminals
      G07428982Courtesy of FORD MOTOR CO.
      • Are the resistances less than 3 ohms? 
      1. Yes:  GO to 4  on page 4.
      2. No:  REPAIR the circuit in question.
  4. CHECK FOR CORRECT Global Positioning System Module (GPSM) OPERATION
    1. Ignition OFF.
    2. Disconnect and inspect the Global Positioning System Module (GPSM) connector.
    3. Repair:
      • corrosion (replace connector or terminals - clean module pins)
      • damaged or bent pins - replace terminals/pins
      • pushed-out pins - replace pins as necessary
    4. Reconnect the Global Positioning System Module (GPSM) connector. Make sure it seats and latches correctly.
    5. Operate the system and verify the concern is still present.
      • Is the concern still present? 
      1. Yes:  CHECK On-Line Automotive Service Information System (OASIS) for any applicable Technical Service Bulletins (TSBs). If a Technical Service Bulletin (TSB) exists for this concern, discontinue this test and follow Technical Service Bulletin (TSB) instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new Global Positioning System Module (GPSM). REFER to GLOBAL POSITIONING SYSTEM MODULE (GPSM)  (Premium Plus) or Sony® Sound REFER to GLOBAL POSITIONING SYSTEM MODULE (GPSM) .
      2. No:  The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector.
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