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Test D: Doors Do Not Lock/Unlock Using Keyless Entry Keypad

  1. Retrieve Diagnostic Trouble Codes (DTCs). See SELF-DIAGNOSTIC SYSTEM  . If no DTCs are retrieved, go to step  19 . If Driver Door Module (DDM) DTC B1525 is retrieved, go to next step. If any other DTCs are retrieved, see appropriate DTC INDEX table under SELF-DIAGNOSTICS SYSTEM to continue diagnosis.
  2. Ensure all keypad buttons are not pressed. Using NGS tester, clear DTCs and perform DDM self-test. If DDM DTC B1525 is not retrieved, go to next step. If DDM DTC B1525 is retrieved, go to step  4 .
    NOTE: DDM PID KEY_PAD will read 1, 3, 5, 7, or 9 as each keypad button is pressed.
  3. Using NGS tester, monitor DDM PID KEY_PAD while pressing and releasing each keypad buttons several times. If DDM PID KEY_PAD indicates each button releases within one second from when button is released, system is operating properly at this time. Clarify concern with customer. If DDM PID KEY_PAD does not indicate each button releases within one second from when button is released, replace keyless entry keypad and retest system operation.
  4. Using NGS tester, monitor DDM PID KEY_PAD while pressing keypad button 1/2. If DDM PID KEY_PAD does not indicate 1, go to next step. If DDM PID KEY_PAD indicates 1, go to step  9 .
  5. Using NGS tester, monitor DDM PID KEY_PAD while pressing keypad button 3/4. If DDM PID KEY_PAD does not indicate 3, go to next step. If DDM PID KEY_PAD indicates 3, go to step  11 .
  6. Using NGS tester, monitor DDM PID KEY_PAD while pressing keypad button 5/6. If DDM PID KEY_PAD does not indicate 5, go to next step. If DDM PID KEY_PAD indicates 5, go to step  13 .
  7. Using NGS tester, monitor DDM PID KEY_PAD while pressing keypad button 7/8. If DDM PID KEY_PAD does not indicate 7, go to next step. If DDM PID KEY_PAD indicates 7, go to step  15 .
  8. Using NGS tester, monitor DDM PID KEY_PAD while pressing keypad button 9/0. If DDM PID KEY_PAD does not indicate 9, replace driver door module. Clear DTCs and retest system operation. If DDM PID KEY_PAD indicates 9, go to step  17 .
  9. Turn ignition off. Disconnect DDM 20-pin connector C523 located in lower front corner of driver door. Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 16 (Light Blue/Yellow wire). See Figure . If more than 10 volts exists, go to next step. If 10 volts or less exists, replace DDM. Clear DTCs and retest system operation.
  10. Turn ignition off. Disconnect keyless entry keypad 10-pin connector C525. Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 16 (Light Blue/Yellow wire). See Figure . If more than 10 volts exists, repair Light Blue/Yellow wire and retest system operation. If 10 volts or less exists, replace keyless entry keypad and retest system operation.
  11. Turn ignition off. Disconnect DDM 20-pin connector C523 located in lower front corner of driver door. Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 14 (Light Green/Red wire). See Figure . If more than 10 volts exists, go to next step. If 10 volts or less exists, replace DDM. Clear DTCs and retest system operation.
  12. Turn ignition off. Disconnect keyless entry keypad 10-pin connector C525. Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 14 (Light Green/Red wire). See Figure . If more than 10 volts exists, repair Light Green/Red wire and retest system operation. If 10 volts or less exists, replace keyless entry keypad and retest system operation.
  13. Turn ignition off. Disconnect DDM 20-pin connector C523 located in lower front corner of driver door. Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 3 (Yellow/Black wire). See Figure . If more than 10 volts exists, go to next step. If 10 volts or less exists, replace DDM. Clear DTCs and retest system operation.
  14. Turn ignition off. Disconnect keyless entry keypad 10-pin connector C525. Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 3 (Yellow/Black wire). See Figure . If more than 10 volts exists, repair Yellow/Black wire and retest system operation. If 10 volts or less exists, replace keyless entry keypad and retest system operation.
  15. Turn ignition off. Disconnect DDM 20-pin connector C523 located in lower front corner of driver door. Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 4 (Yellow wire). See Figure . If more than 10 volts exists, go to next step. If 10 volts or less exists, replace DDM. Clear DTCs and retest system operation.
  16. Turn ignition off. Disconnect keyless entry keypad 10-pin connector C525. Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 4 (Yellow wire). See Figure . If more than 10 volts exists, repair Yellow wire and retest system operation. If 10 volts or less exists, replace keyless entry keypad and retest system operation.
  17. Turn ignition off. Disconnect DDM 20-pin connector C523 located in lower front corner of driver door. Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 13 (Red wire). See Figure . If more than 10 volts exists, go to next step. If 10 volts or less exists, replace DDM. Clear DTCs and retest system operation.
  18. Turn ignition off. Disconnect keyless entry keypad 10-pin connector C525. Turn ignition switch to RUN position. Using a voltmeter, check voltage between ground and DDM connector C523 terminal No. 13 (Red wire). See Figure . If more than 10 volts exists, repair Red wire and retest system operation. If 10 volts or less exists, replace keyless entry keypad and retest system operation.
  19. Using NGS tester, monitor DDM PID KEY_PAD while pressing and releasing each keypad buttons several times. If DDM PID KEY_PAD values do not agree with keypad, go to next step. If DDM PID KEY_PAD values agree with keypad, go to step  23 .
  20. Turn ignition off. Disconnect DDM 20-pin connector C523 located in lower front corner of driver door. Disconnect keyless entry keypad connector C525. Using an ohmmeter, check resistance in keyless entry keypad circuits between DDM 20-pin connector C523 and keyless entry keypad connector C525 as specified. See KEYLESS ENTRY KEYPAD CIRCUIT RESISTANCE  table. See WIRING DIAGRAMS  . If all resistances are less than 5 ohms, go to next step. If any resistance is 5 ohms or more, repair open in appropriate circuit(s) and retest system operation.
    KEYLESS ENTRY KEYPAD CIRCUIT RESISTANCE

    DDM Connector C523 Terminal No. Keypad Connector C525 Terminal No. Wire Color
    16 5 Light Blue/Yellow
    14 4 Light Green/Red
    3 3 Yellow/Black
    4 2 Yellow
    13 1 Red
  21. Using an ohmmeter, check resistance in each keyless entry keypad circuit between ground and DDM 20-pin connector C523 as specified. See KEYPAD CIRCUIT IDENTIFICATION  table. See WIRING DIAGRAMS  . If all resistances are more than 10 k/ohms, go to next step. If any resistance is 10 k/ohms or less, repair short to ground in appropriate circuit(s) and retest system operation.
    KEYPAD CIRCUIT IDENTIFICATION

    DDM Connector C523 Terminal No. Wire Color
    16 Light Blue/Yellow
    14 Light Green/Red
    3 Yellow/Black
    4 Yellow
    13 Red
  22. Using a voltmeter, check voltage between ground and keyless entry keypad connector C525 terminal No. 6 (Black/White wire). See Fig 1 . If more than 10 volts exists, replace keyless entry keypad and retest system operation. If 10 volts or less exists, repair open in Black/White wire and retest system operation.
  23. Attempt to operate door locks from driver door lock switch. If door locks operate properly, replace DDM and retest system operation. If door locks do not operate properly, go to TEST E: ALL DOOR LOCKS ARE INOPERATIVE/DO NOT OPERATE PROPERLY  .
Fig 1: Identifying Keyless Entry Keypad Connector C525 Terminals (Male Side)
G96E30274Courtesy of FORD MOTOR CO.
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