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Home >> Ford >> 2013 >> Fiesta Titanium, 4D Hatchback, Standard Trans >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Anti-Theft System - Passive Anti-Theft System >> Diagnosis And Testing >> Anti-Theft - With Intelligent Access (IA) >> Pinpoint Tests >> Pinpoint Test K: The Vehicle Does Not Start With The Intelligent Access (IA) Key In Certain Areas Within The Vehicle >> Pinpoint Test K: The Vehicle Does Not Start With The IA Key In Certain Areas Within The Vehicle

Pinpoint Test K: The Vehicle Does Not Start With The IA Key In Certain Areas Within The Vehicle

  1. K1 CHECK THE IA KEY LOCATION 
    • Check the location of the IA key and if it is placed in the far corners of the interior of the vehicle, move the IA key out of these areas and attempt to start the vehicle.
    • Does the vehicle start? 
    • Yes  : The system is OK. INFORM the customer of the normal vehicle operation.
    • No  : GO to  K2.
  2. K2 CHECK FOR ENVIRONMENTAL INTERFERENCE 
    • Check for the use of any charger or other wireless device that can cause interference with the IA key. If any device is found, remove the device and attempt to start the engine.
    • Does the engine start? 
    • Yes  : INFORM the customer of the cause of the concern and the normal operation of the vehicle.
    • No  : GO to  K3.
  3. K3 CHECK THE PASSIVE START ANTENNA CIRCUITS FOR A SHORT TO VOLTAGE 
    • Ignition OFF.
    • Disconnect: RFA Module C3503E.
    • Disconnect: Suspect Passive Start Antenna.
    • Place an IA key next to the PATS/backup transceiver and press the START/STOP switch to switch the ignition to RUN.
    • Measure the voltage between the suspect passive start antenna, harness side and ground as follows:
      Suspect Passive Start Antenna Connector-Pin Circuit
      Front C325-1 VPK05 (BN/GN)
      Front C325-2 RPK05 (YE/OG)
      Center C326-1 VPK06 (GY/VT)
      Center C326-2 RPK06 (BU/WH)
      Rear C317-1 VPK08 (WH/OG)
      Rear C317-2 RPK08 (BN/VT)
      Fig 1: Measuring Voltage Between Suspect Passive Start Antenna, Harness Side And Ground
      G06938476Courtesy of FORD MOTOR CO.
    • Is any voltage present? 
    • Yes  : REPAIR the circuit in question for a short to voltage. CLEAR the DTCs. REPEAT the self-test.
    • No  : GO to  K4.
  4. K4 CHECK THE PASSIVE START ANTENNA CIRCUITS FOR A SHORT TO GROUND 
    • Ignition OFF.
    • Measure the resistance between the suspect passive start antenna, harness side and ground as follows:
      Suspect Passive Start Antenna Connector-Pin Circuit
      Front C325-1 VPK05 (BN/GN)
      Front C325-2 RPK05 (YE/OG)
      Center C326-1 VPK06 (GY/VT)
      Center C326-2 RPK06 (BU/WH)
      Rear C317-1 VPK08 (WH/OG)
      Rear C317-2 RPK08 (BN/VT)
      Fig 2: Measuring Resistance Between Suspect Passive Start Antenna, Harness Side And Ground
      G06938477Courtesy of FORD MOTOR CO.
    • Are the resistance greater than 10,000 ohms? 
    • Yes  : GO to  K5.
    • No  : REPAIR the circuit in question for a short to ground. CLEAR the DTCs. REPEAT the self-test.
  5. K5 CHECK THE ANTENNA CIRCUITS FOR AN OPEN 
    • Measure the resistance between the RFA module C3503E, harness side and the suspect passive start antenna connector, harness side as follows:
      RFA Module Connector-Pin Suspect Passive Start Antenna Connector-Pin Circuit
      C3503E-9 Front C325-1 VPK05 (BN/GN)
      C3503E-2 Front C325-2 RPK05 (YE/OG)
      C3503E-17 Center C326-1 VPK06 (GY/VT)
      C3503E-5 Center C326-2 RPK06 (BU/WH)
      C3503E-11 Rear C317-1 VPK08 (WH/OG)
      C3503E-4 Rear C317-2 RPK08 (BN/VT)
      Fig 3: Measuring Resistance Between RFA Module C3503E, Harness Side And Suspect Passive Start Antenna Connector, Harness Side
      G06938478Courtesy of FORD MOTOR CO.
    • Are the resistances less than 5 ohms? 
  6. K6 CHECK FOR CORRECT RFA MODULE OPERATION 
    • Disconnect all the RFA module connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the RFA module connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    • Yes  : INSTALL a new RFA module. REFER to MULTIFUNCTION ELECTRONIC MODULES . 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.
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