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Home >> Ford >> 2015 >> Explorer Limited, 3.5L Eng VIN 8, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Anti-Theft Systems >> Door Handles, Door Locks, Door Latches And Entry Systems - Without Intelligent Access (IA) >> Diagnosis And Testing >> Handles, Locks, Latches and Entry Systems >> Pinpoint Tests >> PINPOINT TEST H : The Keyless Entry Keypad Illumination Is Inoperative Or Always On >> PINPOINT TEST H : The Keyless Entry Keypad Illumination Is Inoperative Or Always On

PINPOINT TEST H : The Keyless Entry Keypad Illumination Is Inoperative Or Always On

  1. H1 CHECK THE KEYLESS ENTRY KEYPAD ILLUMINATION

    • Ignition OFF.
    • Check the keyless entry keypad illumination.

    Is the keyless entry keypad illumination always on? 

    Yes  GO to  H9.
    No  GO to  H2.

  2. H2 CHECK THE KEYLESS ENTRY KEYPAD INPUT TO THE BCM

    • Using a diagnostic scan tool, monitor the BCM PIDs KYPD_BTN_1/2, KYPD_BTN_7/8, and KYPD_BTN_9/0.
    • Touch several keyless entry keypad buttons while viewing the BCM PIDs.

    Do the PIDs display active when the corresponding button is touched? 

    Yes  GO to  H3.
    No  GO to Pinpoint Test G .

  3. H3 CHECK THE BCM DTCs FROM THE SELF-TEST

    • Using a diagnostic scan tool, carry out the BCM self-test.

    Is DTC B121A:11 present? 

    Yes  GO to  H4.
    No  GO to  H6.

  4. H4 CHECK THE KEYLESS ENTRY KEYPAD FOR A SHORT TO GROUND

    • Disconnect: Keyless Entry Keypad.
    • Using a diagnostic scan tool, clear the BCM DTCs.
    • Using a diagnostic scan tool, carry out the BCM self-test.

    Is DTC B121A:11 still present? 

    Yes  GO to  H5.
    No  INSTALL a new keyless entry keypad. REFER to Keyless Entry Keypad .

  5. H5 CHECK THE KEYPAD ILLUMINATION OUTPUT CIRCUIT FOR A SHORT TO GROUND

    • Ignition OFF.
    • Disconnect: BCM C2280C.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C500-2
      GFD33596Courtesy of FORD MOTOR COMPANY
      		 Ground

    Is the resistance greater than 10, 000 ohms? 

    Yes  GO to  H10.
    No  REPAIR the circuit.

  6. H6 CHECK THE KEYPAD ILLUMINATION OUTPUT CIRCUIT FOR REFERENCE VOLTAGE

    • Disconnect Keyless Entry Keypad.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C500-2
      GFD33595Courtesy of FORD MOTOR COMPANY
      		 Ground

    Are 11 volts (+/- 1 volt) present? 

    Yes  GO to  H7.
    No  GO to  H8.

  7. H7 CHECK FOR BCM OUTPUT

    • Using a diagnostic scan tool, view BCM PIDs.
    • While active commanding the BCM PID (KEY_PAD_LMP) ON, measure:
      Positive Lead Measurement / Action Negative Lead
      C500-2
      GFD33595Courtesy of FORD MOTOR COMPANY
      		 Ground

    Does the voltage increase at least 1 volt greater than the reference voltage? 

    Yes  INSTALL a new keyless entry keypad. REFER to Keyless Entry Keypad .
    No  GO to  H10.

  8. H8 CHECK THE KEYPAD ILLUMINATION OUTPUT CIRCUIT FOR AN OPEN

    • Ignition OFF.
    • Disconnect BCM C2280C.
    • Measure:
      Positive Lead Measurement / Action Negative Lead
      C500-2
      GFD33596Courtesy of FORD MOTOR COMPANY
      		 C2280C-26

    Is the resistance less than 3 ohms? 

    Yes  GO to  H10.
    No  REPAIR the circuit.

  9. H9 CHECK THE KEYPAD ILLUMINATION OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE

    • Disconnect BCM C2280C.
    • Ignition ON.
    • Observe the keypad illumination.

    Is the keypad still illuminated? 

    Yes  REPAIR the circuit.
    No  GO to  H10.

  10. H10 CHECK FOR CORRECT BCM OPERATION

    • Ignition OFF.
    • Disconnect and inspect all BCM 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 all BCM 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 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 BCM. 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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