Pinpoint Test L: The Smart Unlock Does Not Operate Correctly

Test Step 

1. L1 CHECK THE DOOR LOCK CONTROL SWITCH 
   • Disconnect: Driver or Passenger Door Lock Control Switch.
   • Carry out the door lock control switch component test. Refer to COMPONENT TESTING - F250-F550 SUPER DUTY PICK for component testing.
   • Is the door lock control switch OK? 

   Result / Action to Take 

   • Yes  : GO to L2.
   • No  : INSTALL a new door lock control switch. REFER to DOOR LOCK CONTROL SWITCH  in this article. TEST the system for normal operation.
2. L2 CHECK ALL VEHICLE SECURITY MODULE DOOR AJAR PIDS FOR CORRECT READINGS 
   • Key in ON position.
   • Monitor all the vehicle security module door ajar PIDS while opening and closing the doors.
   • Do the PID values agree with the door positions? 
   • Yes  : GO to  L6.
   • No  : GO to L3.
3. L3 CHECK THE SUSPECT DOOR AJAR SWITCH CIRCUIT 
   • Key in OFF position.
   • Disconnect: Suspect Door Ajar Switch Connector.
   • Connect a jumper wire between the pins of the suspect door ajar switch. Refer to the following chart:

     Door	Connector
     LF	C526
     RF	C602
     LR	C715
     RR	C820

   Fig 1: Connecting Jumper Wire Between Pins Of Suspect Door Ajar Switch
   Courtesy of FORD MOTOR CO.
   • Do the courtesy lamps turn off? 
   • Yes  : INSTALL a new door ajar switch. REFER to DOOR AJAR SWITCH  in this article. TEST the system for normal operation.
   • No  : GO to L4.
4. L4 CHECK THE SUSPECT DOOR AJAR SWITCH CIRCUIT 57 (BK) FOR AN OPEN 
   • Measure the resistance between the suspect door ajar switch connector, harness side and ground as follows:

     Door Ajar Switch	Circuit
     C526 (LF)	57 (BK)
     C602 (RF)	57 (BK)
     C715 (LR)	57 (BK)
     C820 (RR)	57 (BK)

   • Is the resistance less than 5 ohms? 
   • Yes  : GO to L5.
   • No  : REPAIR the circuit in question. TEST the system for normal operation.
5. L5 CHECK THE CIRCUIT BETWEEN THE VEHICLE SECURITY MODULE AND THE SUSPECT DOOR AJAR SWITCH FOR AN OPEN 
   • Disconnect: Vehicle Security Module C2113a.
   • Measure the resistance between the suspect door ajar switch connector, harness side and the vehicle security module C2113a, harness side, as follows:

     Door Ajar Switch	Vehicle Security Module-Pin	Circuit
     C526 (LF)	C2113a-4	765 (YE/BK)
     C602 (RF)	C2113a-5	761 (GY/RD)
     C715 (LR)	C2113a-11	759 (LG/YE)
     C820 (RR)	C2113a-6	760 (PK/LB)

   • Is the resistance less than 5 ohms? 
   • Yes  : GO to L6.
   • No  : REPAIR the circuit in question. TEST the system for normal operation.
6. L6 CHECK THE INSTRUMENT CLUSTER MODULE PIDS 
   • Key in ON position.
   • Enter the following diagnostic mode on the diagnostic tool: Instrument Cluster PIDS.
   • Monitor the instrument cluster module key-in-ignition PID.
   • Is the instrument cluster module receiving the correct values? 
   • Yes  : GO to L7.
   • No  : REFER to MODULE COMMUNICATIONS NETWORK .
7. L7 CHECK FOR CORRECT VEHICLE SECURITY MODULE OPERATION 
   • Key in OFF position.
   • Disconnect all the vehicle security module connectors.
   • Check for:
     • corrosion
     • pushed-out pins
   • Connect all the vehicle security 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 vehicle security module. REFER to MULTIFUNCTION ELECTRONIC MODULES . REPEAT the self-test.
   • No  : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. TEST the system for normal operation.