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Test B: One Power Window Inoperative

  1. If door systems diagnostic system check has been performed, go to next step. If door systems diagnostic system check has not been performed, perform diagnostic system check before proceeding. See DOOR SYSTEMS DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM.
  2. Turn ignition switch to RUN position. Operate power windows to verify inoperative window. If any power window does not operate, go to next step. If all power windows operate, inspect for intermittents. See TROUBLE SHOOTING  .
  3. If driver's power window is inoperative, go to next step. If both power windows are inoperative, go to step  11 .
  4. If passenger's power window does not operate from driver's power window switch, go to next step. If passenger's power window operates from driver's power window switch, go to step  19 .
  5. Disconnect passenger's power window switch 5-pin harness connector. Connect a test light between ground and passenger's power window switch harness connector terminal "B" (Light Blue wire). Observe test light while pressing driver's power window switch for passenger's side window. If test light illuminates, go to next step. If test light does not illuminate, go to step  7 .
  6. Connect a test light between ground and passenger's power window switch harness connector terminal "C" (Tan wire). Observe test light while pressing driver's power window switch for passenger's side window. If test light does not illuminate, go to step  8 . If test light illuminates, go to step  9 .
  7. Inspect Light Blue wire for an open or short to ground between ground and passenger's power window switch harness connector terminal "B". If an open or short to ground is not found, go to step  21 . If an open or short to ground is found, repair as necessary then go to step  30 .
  8. Inspect Tan wire for an open or short to ground between ground and passenger's power window switch harness connector terminal "C". If an open or short to ground is not found, go to step  21 . If an open or short to ground is found, repair as necessary then go to step  30 .
  9. Connect passenger's power window switch harness connector. Disconnect passenger's power window motor 2-pin harness connector. Connect a test light between passenger's power window motor harness connector terminals. Observe test light while pressing driver's power window switch for passenger's side window UP and DOWN positions. If test light does not illuminate in either position, go to next step. If test light illuminates in both positions, go to step  22 .
  10. Inspect Dark Blue wire and Brown wire for an open or short to ground between ground and passenger's power window motor harness connector. If an open or short to ground is not found, go to step  20 . If an open or short to ground is found, repair as necessary then go to step  30 .
  11. Using driver's power window switch, operate passenger's side window. If passenger's power window operates, go to next step. If passenger's power window does not operate, go to step  18 .
  12. Disconnect power window control module 5-pin harness connector. Power window control module is located mounted to center of dash mat, above floor tunnel. See Figure . Connect a test light between ground and power window control module harness connector terminal "A" (Dark Blue wire). See Fig 1 . Observe test light while pressing driver's power window switch for driver's window to UP position. If test light illuminates, go to next step. If test light does not illuminate, go to step  14 .
    Fig 1: Identifying Power Window Control Module Harness Connector Terminals
    G99A02297Courtesy of GENERAL MOTORS CORP.
  13. Connect a test light between ground and power window control module harness connector terminal "E" (Gray wire). Observe test light while pressing driver's power window switch for driver's window to DOWN position. If test light does not illuminate, go to step  15 . If test light illuminates, go to step  16 .
  14. Inspect Dark Blue wire for an open or short to ground between ground and power window control module harness connector terminal "A". If an open or short to ground is not found, go to step  21 . If an open or short to ground is found, repair as necessary then go to step  30 .
  15. Inspect Gray wire for an open or short to ground between ground and power window control module harness connector terminal "E". If an open or short to ground is not found, go to step  21 . If an open or short to ground is found, repair as necessary then go to step  30 .
  16. Connect power window control module harness connector. Disconnect driver's power window motor 2-pin harness connector. Connect a test light between driver's power window motor harness connector terminals. Observe test light while pressing driver's power window switch for driver's side window to UP and DOWN positions. If test light does not illuminate in either position, go to next step. If test light illuminates in both positions, go to step  22 .
  17. Inspect Dark Blue wire and Brown wire for an open or short to ground between ground and driver's power window motor harness connector terminals. If an open or short to ground is not found, go to step  23 . If an open or short to ground is found, repair as necessary then go to step  30 .
  18. Disconnect driver's power window switch 5-pin harness connector. Connect a test light between ground and driver's power window switch harness connector terminal "F" (Brown wire). If test light illuminates, go to step  21 . If test light does not illuminate, go to step  24 .
  19. Disconnect passenger's power window switch 5-pin harness connector. Connect a test light between ground and passenger's power window switch harness connector terminal "A" (Brown wire). If test light illuminates, go to next step. If test light does not illuminate, go to step  25 .
  20. Inspect passenger's power window switch for poor connections. If poor connections are not found, go to step  26 . If poor connections are found, repair as necessary then go to step  30 .
  21. Inspect driver's power window switch for poor connections. If poor connections are not found, go to step  27 . If poor connections are found, repair as necessary then go to step  30 .
  22. Inspect suspect power window motor for intermittents or poor connections. If intermittents or poor connections are not found, go to step  28 . If intermittents or poor connections are found, repair as necessary then go to step  30 .
  23. Inspect power window control module for intermittents or poor connections. If intermittents or poor connections are not found, go to step  29 . If intermittents or poor connections are found, repair as necessary then go to step  30 .
  24. Repair open in Brown wire between driver's power window switch and instrument panel fuse block. Instrument panel fuse block is located behind left side of instrument panel. See Figure . Go to step  30 .
  25. Repair open in Brown wire between passenger's power window switch and instrument panel fuse block. Instrument panel fuse block is located behind left side of instrument panel. See Figure . Go to step  30 .
  26. Replace passenger's power window switch, then go to step  30 .
  27. Replace driver's power window switch, then go to step  30 .
  28. Replace suspect power window motor, then go to step  30 .
  29. Replace power window control module, then go to next step.
  30. Operate system to verify repair. If system is not operating properly, repeat test beginning at step  2 .
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