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Pinpoint Test F: The Remote Start Is Inoperative

WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
  1. F1 CHECK THE OPERATION OF THE IKT OR IA KEY 
    • Press all buttons on the IKT  or IA  key and check for the correct operation.

    Is the remote start the only function that is inoperative? 

  2. F2 CHECK THE ENGINE FOR CRANKING 
    • With the gear selector in PARK or NEUTRAL, attempt to crank the engine using the key in the ignition or pressing the start/stop switch and the brake pedal.

    Did the engine crank? 

    • Yes  : GO to F3  .
    • No  : This not a remote start issue. To diagnose the no crank condition for vehicles without IA  , GO to PINPOINT TEST A .

      To diagnose the no crank condition for vehicles with IA  , GO to PINPOINT TEST B .

  3. F3 CHECK FOR ILLUMINATED ENGINE WARNING LAMPS 
    • With the engine running, check the instrument cluster for illuminated warning lamps.

    Are any engine warning lamps illuminated? 

    • Yes  : CARRY OUT self-test of the PCM  . DIAGNOSE and REPAIR any DTCs present. REFER to PCM DTC CHART  .
    • No  : GO to F4  .
  4. F4 RETRIEVE BCM AND TPM DTCs 
    • Using a diagnostic scan tool, perform the BCM  and TPM  self-tests.

    Are any DTCs present? 

    • Yes  : REFER to DTC CHARTS  .
    • No  : GO to F5  .
  5. F5 CONFIRM THE REMOTE START FUNCTION IS ENABLED 

    Is the remote start function enabled? 

    • Yes  : GO to F6  .
    • No  : ENABLE the remote start function. TEST the system for normal operation.
  6. F6 CHECK THE BCM LAST RECEIVED RKE TRANSMITTER BUTTON PRESS (LST_RKE _xMTR) OR RFA MODULE LAST RECEIVED TRANSMITTER ID BUTTON PRESS (LST_XM_B_PRS) TRANSMITTER PID 
    • Using a diagnostic scan tool, view BCM  Parameter Identifications (PIDs) (without IA  ).
    • Using a diagnostic scan tool, view RFA  Parameter Identifications (PIDs) (with IA  ).
    • Press the remote start button on the IKT  or IA  key and note the PID  status:
      • Without IA  , BCM PID  LST_RKE_xMTR.
      • With IA  , RFA  module PID  LST_XM_B_Prs.

    Does the selected PID indicate the remote start button was the last button pressed? 

  7. F7 CHECK THE PCM WAKE UP CIRCUIT 
    • Ignition OFF.
    • Disconnect: PCM C1381B  (2.0L) or C175B  (3.5L and 3.7L).
    • Ignition ON.
    • For 2.0L equipped vehicles  , measure the voltage between the PCM C1381B-14  , circuit CE436 (VT/OG), harness side and ground.
      Fig 1: Measuring Voltage Between PCM C1381B-14 Circuit CE436 (VT/OG) And Ground (For 2.0L)
      G08978650Courtesy of FORD MOTOR CO.
    • For 3.5L and 3.7L equipped vehicles  , measure the voltage between the PCM C175B-35  , circuit CE436 (VT/OG), harness side and ground.
      Fig 2: Measuring Voltage Between PCM C175B-35 Circuit CE436 (VT/OG) And Ground (For 3.5L And 3.7L)
      G07399140Courtesy of FORD MOTOR CO.

    Is the voltage greater than 11 volts? 

    • Yes  : GO to F8  .
    • No  : VERIFY BCM  fuse 18 (10A) is OK. If OK, REPAIR circuit CE436 (VT/OG) for an open. If not OK, REFER to the SYSTEM WIRING DIAGRAMS to identify the possible causes of the circuit short. TEST the system for normal operation.
  8. F8 CHECK THE REMOTE START PRECONDITIONS FOR CORRECT OPERATION 
    NOTE: The Body Control Module (BCM) acknowledges the remote start request and that all preconditions have been met by providing 2 short flashes of the turn indicators and a system complete chirp.
    • Check the vehicle for the following:
      • Hood is closed with no DTC present.
      • Ignition must be off
      • Vehicle must be in PARK.
      • Remote start feature is configured ON.
      • Remote start events does not exceed allowed time. (2 events in a 1 hour duration).

    Have all preconditions for remote start been met and is the remote start system still inoperative? 

    • Yes  : GO to F9  .
    • No  : CARRY OUT the required precondition as necessary. TEST the system for normal operation.
  9. F9 CHECK FOR CORRECT PCM OPERATION 
    • Ignition OFF.
    • Disconnect all the PCM  connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect the PCM  connectors and make sure they seat correctly.
    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    • Yes  : INSTALL a new PCM  . Refer to ELECTRONIC ENGINE CONTROLS . CLEAR all DTCs in all 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. ADDRESS the root cause of any connector or pin issues.
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