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Test E: Memory Seat Does Not Move Horizontally/Vertically

WARNING: Vehicle may be equipped with side air bags and seat belt pretensioners. Before testing or repairing power seat system, disable restraint system. See AIR BAG RESTRAINT SYSTEMS - LS article. For any diagnostic or service to power seats equipped with side air bags, use Air Bag Simulators (418-133). Air bag simulators must be installed to air bag floor harness connector, and removed prior to operating vehicle. For any diagnostic or service to power seats equipped with seat belt pretensioners, use Pretensioners Simulators (418-F088). Pretensioners simulators must be installed to pretensioners floor harness connector, and removed prior to operating vehicle.
NOTE: After any repairs are complete, ensure all component are properly installed and all harness connectors are connected properly and repeat data link diagnostic test. See DATA LINK DIAGNOSTIC TEST under SELF-DIAGNOSTIC SYSTEM in appropriate MODULE COMMUNICATIONS NETWORK - LS article.
  1. Turn ignition switch to LOCK position. Connect New Generation Star (NGS) tester to Data Link Connector (DLC). DLC is located below left side of instrument panel, to right of steering column. Using NGS tester, perform Driver's Seat Module (DSM) self-test. If DTCs B1703, B1707, B1711, B1715, B1719, B1723 or B1731 are retrieved, go to next step. If only an combination DTCs B2146, B2149, B2152 or B2155 are retrieved, go to step  43 . If any combination of DTCs B1757, B1767, B1765, B1769, B2146, B2149, B2152 or B2155 are retrieved, go to step  4 . If no DTCs are retrieved, go to step  45 .
  2. Ensure ignition is in LOCK position. Disconnect DSM 17-pin harness connector C341c. Turn ignition switch to RUN position. Measure voltage between ground and appropriate DSM harness connector C341c terminals. See DSM CONNECTOR C341C CIRCUIT IDENTIFICATION  table. See Figure . If any voltages are 10 volts or more, go to next step. If all voltages are less than 10 volts, clear DTCs. Repeat DSM self-test. If DTC B1703, B1707, B1711, B1715, B1719, B1723, B1727 or B1731 are retrieved, replace DSM. See DRIVER'S SEAT MODULE  under REMOVAL & INSTALLATION. Calibrate driver's seat, see SEAT CALIBRATION  under DESCRIPTION & OPERATION. If any other DTCs are retrieved, perform appropriate test. See DRIVER'S SEAT MODULE DIAGNOSTIC TROUBLE CODE INDEX  table under SELF-DIAGNOSTIC SYSTEM.
    DSM CONNECTOR C341C CIRCUIT IDENTIFICATION

    DSM Terminal No. Wire Color
    3 Gray/Orange
    4 Gray/Red
    5 White/Black
    6 Gray/White
    11 White/Green
    12 White/Red
    13 Gray/Black
    14 White/Violet
  3. Disconnect driver's seat adjust switch harness connector C360. Measure voltage between ground and appropriate DSM harness connector C341c terminals. See DSM CONNECTOR C341C CIRCUIT IDENTIFICATION  table. See Figure . If any voltages are 10 volts or more, repair short to voltage in appropriate wire(s). See WIRING DIAGRAMS  . If all voltages are less than 10 volts, replace driver's seat adjust switch.
  4. Using NGS tester, perform DSM self-test. If DTCs B1757, B1761, B1765 and B1769 are retrieved, go to next step. If DTCs B1757, B1761, B1765 and B1769 are not retrieved, go to step  10 .
  5. Turn ignition switch to LOCK position. Disconnect driver's memory seat horizontal sensor harness connector C372. Measure resistance between ground and driver's memory seat horizontal sensor harness connector C372 terminal No. 1 (Yellow/Red wire). See Fig 1 . If resistance is 180 ohms or more, go to next step. If resistance is less than 180 ohms, go to step  7 .
  6. Disconnect DSM 17-pin harness connector C341a. Measure resistance between driver's memory seat horizontal sensor harness connector C372 terminal No. 3 (Brown/Red wire) and DSM harness connector C341a terminal No. 11 (Brown/White wire). See Figure and Fig 1 . If resistance is less than 5 ohms, replace DSM. See DRIVER'S SEAT MODULE  under REMOVAL & INSTALLATION. Calibrate driver's seat. See SEAT CALIBRATION  under DESCRIPTION & OPERATION. If resistance is 5 ohms or more, repair open in circuit between DSM and driver's memory seat horizontal sensor. See WIRING DIAGRAMS  .
  7. Turn ignition switch to RUN position. Measure voltage between ground and driver's memory seat horizontal sensor harness connector C372 terminal No. 1 (Yellow/Red wire). If voltage is less than 10 volts, go to next step. If voltage is 10 volts or more, go to step  10 .
  8. Turn ignition switch to LOCK position. Disconnect DSM 17-pin harness connector C341a. Measure resistance between ground and driver's memory seat horizontal sensor harness connector C372 terminal No. 1 (Yellow/Red wire). See Fig 1 . If resistance is 10 k/ohms or more, go to next step. If resistance is less than 10 k/ohms, repair short to ground in Yellow/Red wire between DSM and driver's memory seat horizontal sensor.
  9. Measure resistance between driver's memory seat horizontal sensor harness connector C372 terminal No. 1 (Yellow/Red wire) and DSM harness connector C341a terminal No. 15 (Yellow/Violet wire). See Figure and Fig 1 . If resistance is less than 5 ohms, replace DSM. See DRIVER'S SEAT MODULE  under REMOVAL & INSTALLATION. Calibrate driver's seat. See SEAT CALIBRATION  under DESCRIPTION & OPERATION. If resistance is 5 ohms or more, repair open in circuit between DSM and driver's memory seat horizontal sensor. See WIRING DIAGRAMS  .
  10. Using NGS tester, perform DSM self-test. If DTC B1757 was retrieved, go to next step. If DTC B1761 was retrieved, go to step  19 . If DTC B1765 was retrieved, go to step  27 . If DTC B1769 was retrieved, go to step  35 . If no DTCs were retrieved, go to step  43 .
  11. Turn ignition switch to LOCK position. Disconnect driver's seat rear height motor harness connector C382. Measure voltage between driver's seat rear height motor harness connector C382 terminals No. 1 (Yellow/Violet wire) and No. 2 (White/Violet wire). See Fig 2 . Operate driver's seat adjust switch to rear up and down positions. If voltage is not 10 volts or more in both directions with opposite polarity, go to next step. If voltage is 10 volts or more in both directions with opposite polarity, go to step  15 .
  12. Measure voltage between ground and driver's seat rear height motor harness connector C382 terminal No. 1 (Yellow/Violet wire) while operating driver's seat adjust switch to rear down position. Measure voltage between ground and driver's seat rear height motor harness connector C382 terminal No. 2 (White/Violet wire) while operating driver's seat adjust switch to rear up position. If voltage is less than 10 volts at either terminal, go to next step. If voltage is 10 volts or more at both terminals, replace DSM. See DRIVER'S SEAT MODULE  under REMOVAL & INSTALLATION. Calibrate driver's seat. See SEAT CALIBRATION  under DESCRIPTION & OPERATION.
  13. Ensure ignition is in LOCK position. Disconnect DSM 17-pin harness connector C341a. Measure resistance between ground and driver's seat rear height motor harness connector C382 terminal No. 1 (Yellow/Violet wire). Measure resistance between ground and driver's seat rear height motor harness connector C382 terminal No. 2 (White/Violet wire). If both resistances are 10 k/ohms or more, go to next step. If either resistance is less than 10 k/ohms, repair short to ground in appropriate wire between driver's seat rear height motor and DSM. See WIRING DIAGRAMS  .
  14. Measure resistance of Yellow/Violet wire between driver's seat rear height motor harness connector C382 terminal No. 1 and DSM harness connector C341a terminal No. 8. See Figure and Fig 2 . Measure resistance of White/Violet wire between driver's seat rear height motor harness connector C382 terminal No. 2 and DSM harness connector C341a terminal No. 16. If both resistances are less than 5 ohms, replace DSM. See DRIVER'S SEAT MODULE  under REMOVAL & INSTALLATION. Calibrate driver's seat. See SEAT CALIBRATION  under DESCRIPTION & OPERATION. If either resistance is 5 ohms or more, repair open in appropriate circuit between driver's seat rear height motor and DSM. See WIRING DIAGRAMS  .
  15. Turn ignition switch to LOCK position. Disconnect driver's memory seat rear height sensor harness connector C383. Measure resistance between ground and driver's memory seat rear height sensor harness connector C383 terminal No. 3 (Brown/Green wire). See Fig 1 . If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in circuit between driver's memory seat rear height sensor and DSM. See WIRING DIAGRAMS  .
  16. Turn ignition switch to RUN position. Measure voltage between ground and driver's memory seat rear height sensor harness connector C383 terminal No. 1 (Yellow/Green wire). If voltage is approximately 5 volts, go to next step. If voltage is not approximately 5 volts, repair open in circuit between driver's memory seat rear height sensor and DSM. See WIRING DIAGRAMS  .
  17. Turn ignition switch to LOCK position. Disconnect DSM 17-pin harness connector C341a. Measure resistance between ground and driver's memory seat rear height sensor harness connector C383 terminal No. 2 (White/Green wire). If resistance is 10 k/ohms or more, go to next step. If resistance is less than 10 k/ohms, repair short to ground in White/Green wire between driver's memory seat rear height sensor and DSM.
  18. Measure resistance of White/Green wire between driver's memory seat rear height sensor harness connector C383 terminal No. 2 and DSM harness connector C341a terminal No. 14. See Figure and Fig 1 . If resistance is less than 5 ohms, replace front seat track. See FRONT SEAT TRACK  under REMOVAL & INSTALLATION. Calibrate driver's seat. See SEAT CALIBRATION  under DESCRIPTION & OPERATION. If resistance is 5 ohms or more, repair open in White/Green wire between driver's memory seat rear height sensor and DSM.
  19. Ensure ignition is switch is in LOCK position. Disconnect driver's seat front height motor harness connector C363. Measure voltage between driver's seat front height motor harness connector C363 terminals No. 1 (Yellow/Black wire) and No. 2 (White/Black wire). See Fig 2 . Operate driver's seat adjust switch to up and down positions. If voltage is not 10 volts or more in both directions with opposite polarity, go to next step. If voltage is 10 volts or more in both directions with opposite polarity, go to step  23 .
  20. Measure voltage between ground and driver's seat front height motor harness connector C363 terminal No. 1 (Yellow/Black wire) while operating driver's seat adjust switch to down position. Measure voltage between ground and driver's seat front height motor harness connector C363 terminal No. 2 (White/Black wire) while operating driver's seat adjust switch to up position. If voltage is less than 10 volts at either terminal, go to next step. If voltage is 10 volts or more at both terminals, replace DSM. See DRIVER'S SEAT MODULE  under REMOVAL & INSTALLATION. Calibrate driver's seat. See SEAT CALIBRATION  under DESCRIPTION & OPERATION.
  21. Disconnect DSM 17-pin harness connector C341a. Measure resistance between ground and driver's seat front height motor harness connector C363 terminal No. 1 (Yellow/Black wire). Measure resistance between ground and driver's seat front height motor harness connector C363 terminal No. 2 (White/Black wire). If both resistances are 10 k/ohms or more, go to next step. If either resistance is less than 10 k/ohms, repair short to ground in appropriate wire between driver's seat front height motor and DSM.
  22. Measure resistance of Yellow/Black wire between driver's seat front height motor harness connector C363 terminal No. 1 and DSM harness connector C341a terminal No. 7. See Figure and Fig 2 . Measure resistance of White/Black wire between driver's seat front height motor harness connector C363 terminal No. 2 and DSM harness connector C341a terminal No. 17. If both resistances are less than 5 ohms, replace DSM. See DRIVER'S SEAT MODULE  under REMOVAL & INSTALLATION. Calibrate driver's seat. See SEAT CALIBRATION  under DESCRIPTION & OPERATION. If either resistance is 5 ohms or more, repair open in appropriate wire between driver's seat front height motor and DSM.
  23. Ensure ignition switch is in LOCK position. Disconnect driver's memory seat front height sensor C373. Measure resistance between ground and driver's memory seat front height sensor harness connector C373 terminal No. 3 (Brown/Yellow wire). See Fig 3 . If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in circuit between driver's memory seat front height sensor and DSM. See WIRING DIAGRAMS  .
  24. Turn ignition switch to RUN position. Measure voltage between ground and driver's memory seat front height sensor harness connector C373 terminal No. 1 (Yellow/Black wire). If voltage is approximately 5 volts, go to next step. If voltage is not approximately 5 volts, repair open in circuit between driver's memory seat front height sensor and DSM. See WIRING DIAGRAMS  .
  25. Turn ignition switch to LOCK position. Disconnect DSM 17-pin harness connector C341a. Measure resistance between ground and driver's memory seat front height sensor harness connector C373 terminal No. 2 (White/Black wire). If resistance is 10 k/ohms or more, go to next step. If resistance is less than 10 k/ohms, repair short to ground in White/Black wire between driver's memory seat front height sensor and DSM.
  26. Measure resistance of White/Black wire between driver's memory seat front height sensor harness connector C373 terminal No. 2 and DSM harness connector C341a terminal No. 5. See Figure and Fig 3 . If resistance is less than 5 ohms, replace front seat track. See FRONT SEAT TRACK  under REMOVAL & INSTALLATION. Calibrate driver's seat. See SEAT CALIBRATION  under DESCRIPTION & OPERATION. If resistance is 5 ohms or more, repair open in White/Black wire between driver's memory seat front height sensor and DSM.
  27. Disconnect driver's seat horizontal motor harness connector C362. Measure voltage between driver's seat horizontal motor harness connector C362 terminals No. 1 (White/Green wire) and No. 2 (Yellow/Green wire). See Fig 2 . Operate driver's seat adjust switch to forward and rearward positions. If voltage is not 10 volts or more in both directions with opposite polarity, go to next step. If voltage is 10 volts or more in both directions with opposite polarity, go to step  31 .
  28. Measure voltage between ground and driver's seat horizontal motor harness connector C362 terminal No. 1 (White/Green wire) while operating driver's seat adjust switch to rearward position. Measure voltage between ground and driver's seat horizontal motor harness connector C362 terminal No. 2 (Yellow/Green wire) while operating driver's seat adjust switch to forward position. If voltage is less than 10 volts at either terminal, go to next step. If voltage is 10 volts or more at both terminals, replace DSM. See DRIVER'S SEAT MODULE  under REMOVAL & INSTALLATION. Calibrate driver's seat. See SEAT CALIBRATION  under DESCRIPTION & OPERATION.
  29. Turn ignition switch to LOCK position. Disconnect DSM 17-pin harness connector C341a. Measure resistance between ground and driver's seat horizontal motor harness connector C362 terminal No. 1 (White/Green wire). Measure resistance between ground and driver's seat horizontal motor harness connector C362 terminal No. 2 (Yellow/Green wire). If both resistances are 10 k/ohms or more, go to next step. If either resistance is less than 10 k/ohms, repair short to ground in appropriate wire between driver's seat horizontal motor and DSM. See WIRING DIAGRAMS  .
  30. Measure resistance of White/Green wire between driver's seat horizontal motor harness connector C362 terminal No. 1 and DSM harness connector C341a terminal No. 10. See Figure and Fig 2 . Measure resistance of Yellow/Green wire between driver's seat horizontal motor harness connector C362 terminal No. 2 and DSM harness connector C341a terminal No. 1. If both resistances are less than 5 ohms, replace DSM. See DRIVER'S SEAT MODULE  under REMOVAL & INSTALLATION. Calibrate driver's seat. See SEAT CALIBRATION  under DESCRIPTION & OPERATION. If either resistance is 5 ohms or more, repair open in appropriate wire between driver's seat horizontal motor and DSM. See WIRING DIAGRAMS  .
  31. Disconnect driver's memory seat horizontal sensor harness connector C372. Measure resistance between ground and driver's memory seat horizontal sensor harness connector C372 terminal No. 3 (Brown/Red wire). If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in circuit between driver's memory seat horizontal sensor and DSM. See WIRING DIAGRAMS  .
  32. Turn ignition switch to RUN position. Measure voltage between ground and driver's memory seat horizontal sensor harness connector C372 terminal No. 1 (Yellow/Red wire). If voltage is approximately 5 volts, go to next step. If voltage is not approximately 5 volts, repair open in Yellow/Red wire driver's memory seat horizontal sensor and DSM.
  33. Turn ignition switch to LOCK position. Disconnect DSM harness connector C341a. Measure resistance between ground and driver's memory seat horizontal sensor harness connector C372 terminal No. 2 (White/Red wire). If resistance is 10 k/ohms or more, go to next step. If resistance is less than 10 k/ohms, repair short to ground in White/Red wire between driver's memory seat horizontal sensor and DSM.
  34. Measure resistance of White/Red wire between driver's memory seat horizontal sensor harness connector C372 terminal No. 2 and DSM harness connector C341a terminal No. 4. See Figure and Fig 1 . If resistance is less than 5 ohms, replace front seat track. See FRONT SEAT TRACK  under REMOVAL & INSTALLATION. Calibrate driver's seat. See SEAT CALIBRATION  under DESCRIPTION & OPERATION. If resistance is 5 ohms or more, repair open in White/Red wire between driver's memory seat horizontal sensor and DSM.
  35. Disconnect driver's seat backrest motor harness connector C368. Measure voltage between driver's seat backrest motor harness connector C368 terminals No. 1 (White/Red wire) and No. 2 (Yellow/Red wire). See Fig 4 . Operating driver's seat adjust switch to recline forward and rearward. If voltage is not 10 volts or more in both directions with opposite polarity, go to next step. If voltage is 10 volts or more in both directions with opposite polarity, go to step  39 .
  36. Measure voltage between ground and driver's seat backrest motor harness connector C368 terminal No. 1 (White/Red wire) while operating driver's seat adjust switch recline rearward. Measure voltage at driver's seat backrest motor harness connector C368 terminal No. 2 (Yellow/Red wire) while operating driver's seat adjust switch recline forward position. If voltage is less than 10 volts at either terminal, go to next step. If voltage is 10 volts or more at both terminals, replace DSM. See DRIVER'S SEAT MODULE  under REMOVAL & INSTALLATION. Calibrate driver's seat. See SEAT CALIBRATION  under DESCRIPTION & OPERATION.
  37. Disconnect DSM 17-pin harness connector C341a. Measure resistance between ground and driver's seat backrest motor harness connector C368 terminal No. 1 (White/Red wire). Measure resistance between ground and driver's seat backrest motor harness connector C368 terminal No. 2 (Yellow/Red wire). If both resistances are 10 k/ohms or more, go to next step. If either resistance is less than 10 k/ohms, repair short to ground in appropriate wire between driver's seat backrest motor and DSM. See WIRING DIAGRAMS  .
  38. Measure resistance of White/Red wire between driver's seat backrest motor harness connector C368 terminal No. 1 and DSM harness connector C341a terminal No. 9. See Figure and Fig 4 . Measure resistance of Yellow/Red wire between driver's seat backrest motor harness connector C368 terminal No. 2 and DSM harness connector C341a terminal No. 2. If both resistances are less than 5 ohms, replace DSM. See DRIVER'S SEAT MODULE  under REMOVAL & INSTALLATION. Calibrate driver's seat. See SEAT CALIBRATION  under DESCRIPTION & OPERATION. If either resistance is 5 ohms or more, repair open in appropriate wire between driver's seat backrest motor and DSM. See WIRING DIAGRAMS  .
  39. Disconnect driver's memory backrest sensor harness connector C376. Measure resistance between ground and driver's memory backrest sensor harness connector C376 terminal No. 1 (Brown/Blue wire). If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open in Brown/Blue wire between driver's memory backrest sensor and DSM.
  40. Turn ignition switch to RUN position. Measure voltage between ground and driver's memory backrest sensor harness connector C376 terminal No. 3 (Yellow/Blue wire). If voltage is approximately 5 volts, go to next step. If voltage is not approximately 5 volts, repair open in Yellow/Blue wire between driver's memory backrest sensor and DSM.
  41. Turn ignition switch to LOCK position. Disconnect DSM 17-pin harness connector C341a. Measure resistance between ground and driver's memory backrest sensor harness connector C376 terminal No. 2 (White/Blue wire). If resistance is 10 k/ohms or more, go to next step. If resistance is less than 10 k/ohms, repair short to ground in White/Blue wire between driver's memory backrest sensor and DSM.
  42. Measure resistance of White/Blue wire between driver's memory backrest sensor harness connector C376 terminal No. 2 and DSM harness connector C341a terminal No. 13. See Figure and Fig 1 . If resistance is 5 ohms or more, repair open in White/Blue wire driver's memory backrest sensor and DSM. If resistance is less than 5 ohms, replace front seat track. See FRONT SEAT TRACK  under REMOVAL & INSTALLATION. Calibrate driver's seat. See SEAT CALIBRATION  under DESCRIPTION & OPERATION.
  43. Using NGS tester, clear DTCs. Operate driver's seat adjust switch through all positions, while monitoring DSM PIDs SFNT_MT, SREARMT, SFWD_MT and SRCL_MT. Watch seat movement. If driver's seat stops or hesitates, or if DSM PIDs are inconsistent, replace front seat track. See FRONT SEAT TRACK  under REMOVAL & INSTALLATION. Calibrate driver's seat. See SEAT CALIBRATION  under DESCRIPTION & OPERATION. If driver's seat does not stop or hesitate, or if DSM PIDs are consistent, go to next step.
  44. Using NGS tester, clear DTCs. Perform DSM self-test. Operate driver's seat and wiggle harness and harness connectors. Inspect for any visual damage. If DTC B2146, B2149, B2152, or B2155 is retrieved, replace front seat track. See FRONT SEAT TRACK  under REMOVAL & INSTALLATION. Calibrate driver's seat. If no DTCs were retrieved, calibrate driver's seat. See SEAT CALIBRATION  under DESCRIPTION & OPERATION.
  45. Using NGS tester, operate driver's seat adjust switch through all positions, while monitoring DSM PIDs SFNT_SW, SFWE_SW, SREAR_SW and SRCL_SW. If PIDs do not agree with driver's seat adjust switch positions, go to next step. If PIDs agree with driver's seat adjust switch positions, replace DSM. See DRIVER'S SEAT MODULE  under REMOVAL & INSTALLATION. Calibrate driver's seat. See SEAT CALIBRATION  under DESCRIPTION & OPERATION.
  46. Turn ignition switch to LOCK position. Disconnect DSM 17-pin harness connector C341c. Measure resistance between ground and appropriate DSM harness connector C341c terminals. See DSM CONNECTOR C341C CIRCUIT IDENTIFICATION  table. See Figure . If all resistances are less than 5 ohms, go to next step. If any resistance are 5 ohms or more, repair open in appropriate wire between driver's seat adjust switch and DSM. See WIRING DIAGRAMS  .
  47. Disconnect driver's seat adjust switch harness connector C360. Measure resistance between ground and appropriate DSM harness connector C341c terminals. See DSM CONNECTOR C341C CIRCUIT IDENTIFICATION  table. See Figure . If all resistances are 10 k/ohms or more, replace driver's seat adjust switch. If any resistance is less than 10 k/ohms, repair short to ground in appropriate wire(s) between driver's seat adjust switch and DSM. See WIRING DIAGRAMS  .
Fig 1: Identifying Driver's Memory Seat Rear Height/Horizontal & Backrest Sensor Harness Connector Terminals
G00013599Courtesy of FORD MOTOR CO.
Fig 2: Identifying Driver's Seat Front & Rear Height/Horizontal & Passenger's Seat Horizontal Motor Harness Connector Terminals
G00013600Courtesy of FORD MOTOR CO.
Fig 3: Identifying Driver's Front Height Sensor Harness Connector C373 Terminals
G00013594Courtesy of FORD MOTOR CO.
Fig 4: Identifying Backrest Motor Harness Connectors C338 & C368 Terminals
G00013601Courtesy of FORD MOTOR CO.
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