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Pinpoint Test V: The Liftgate IA Feature Is Inoperative

  1. V1 CHECK THE POWER LIFTGATE OPERATION FROM THE LIFTGATE RELEASE SWITCH 
    • Unlock the doors using the door lock control switch.
    • Press the liftgate release button located on the liftgate.
    • Does the power liftgate open? 
  2. V2 CHECK THE RKE OPERATION 
    • Close the liftgate.
    • Press the liftgate button twice on an IA key.
    • Does the power liftgate open? 
  3. V3 CHECK THE LIFTGATE IA ANTENNA 
    • Ignition OFF.
    • Disconnect: Liftgate IA Antenna C4082.
    • Measure the resistance  between:
      Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4082-1 (component side) - C4082-2 (component side) -
      Fig 1: Identifying Liftgate IA Antenna Connector Terminals
      G08619002Courtesy of FORD MOTOR CO.
    • Is the resistance between 1 and 3 ohms? 
  4. V4 CHECK THE LIFTGATE IA ANTENNA CIRCUITS FOR A SHORT TO VOLTAGE 
    • Disconnect: RFA Module C4392A.
    • Ignition ON.
    • Measure the voltage  between:
      Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4082-1 VPK07 (VT) - Ground
      C4082-2 RPK07 (GN/OG) - Ground
      Fig 2: Identifying Liftgate IA Antenna Connector Terminals
      G08619003Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes  : REPAIR the circuit in question.
    • No  : GO to V5.
  5. V5 CHECK THE LIFTGATE IA ANTENNA CIRCUITS FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Measure the resistance  between:
      Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4082-1 VPK07 (VT) - Ground
      C4082-2 RPK07 (GN/OG) - Ground
      Fig 3: Identifying Liftgate IA Antenna Connector Terminals
      G08619004Courtesy of FORD MOTOR CO.
    • Are the resistances greater than 10, 000 ohms? 
    • Yes  : GO to V6.
    • No  : REPAIR the circuit in question.
  6. V6 CHECK THE LIFTGATE IA ANTENNA CIRCUITS FOR AN OPEN 
    • Measure the resistance  between:
      Positive Lead Negative Lead
      Pin Circuit Pin Circuit
      C4082-1 VPK07 (VT) C4392A-22 VPK07 (VT)
      C4082-2 RPK07 (GN/OG) C4392A-21 RPK07 (GN/OG)
      Fig 4: Checking Liftgate IA Antenna Circuits For Open
      G08619005Courtesy of FORD MOTOR CO.
    • Are the resistances less than 3 ohms? 
    • Yes  : GO to V7.
    • No  : REPAIR the circuit in question.
  7. V7 CHECK FOR CORRECT RFA MODULE OPERATION 
    • Disconnect and inspect all RFA module connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Reconnect the RFA module 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 On-Line Automotive Service Information System (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 RFA module. REFER to MULTIFUNCTION ELECTRONIC MODULES .
    • 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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