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Test B: Left Front Power Window Inoperative

NOTE: To identify harness connectors and terminals, see WIRING DIAGRAMS  .
  1. Review description and operation of power window system, then go to next step. See DESCRIPTION & OPERATION  .
  2. Turn ignition switch to RUN position. Check operation of left front power window switch. If left front power window is inoperative, go to next step. If left front power window is not inoperative, diagnose intermittent concern. See appropriate BODY CONTROL MODULES article.
  3. With master power window switch in UP position, measure voltage between ground and master power window switch harness connector by backprobing terminal No. 11 (Yellow wire). With master power window switch in DOWN position, measure voltage between ground and master power window switch harness connector by backprobing terminal No. 10 (Red wire). See Figure . If battery voltage exists at both terminals, go to next step. If battery voltage does not exist at either terminal, go to step  5 .
    4. NOTE: Wire colors change between left front power window motor and master power window switch.
  4. Disconnect master power window switch 11-pin harness connector. Disconnect left front power window 2-pin harness connector. Measure resistance between master power window switch harness connector terminal No. 11 (Yellow wire) and left front power window harness connector terminal No. 1 (Green/Yellow wire). Measure resistance between master power window switch harness connector terminal No. 10 (Red wire) and left front power window harness connector terminal No. 2 (Red/Blue wire). See Figure . If resistance is less than 2 ohms, go to step  6 . If resistance is 2 ohms or more, go to step  7 .
  5. Inspect left front power window motor harness connector for poor connections or intermittent condition. See appropriate BODY CONTROL MODULES article. If concern still exists, go to step  9 . After repair, go to step  10 .
  6. Inspect master power window switch harness connector for poor connections or intermittent condition. See appropriate BODY CONTROL MODULES article. If concern still exists, go to step  8 . After repair, go to step  10 .
  7. Repair open in appropriate wire between left front power window motor and master power window switch. After repair, go to step  10 .
  8. Replace master power window switch. After repair, go to step  10 .
  9. Replace left front window motor. After repair, go to next step.
  10. Operate system to verify repair. If concern does not exist, system is okay. If concern still exists, go to step  3 .
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