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Test A: All Power Windows Inoperative

  1. Review information in DESCRIPTION & OPERATION  . Go to next step.
  2. Attempt to operate all power windows. If all power windows are inoperative, go to next step. If not all power windows are inoperative, perform appropriate test. See SYMPTOM INDEX  table.
  3. Disconnect master switch assembly harness connector(s). Turn ignition switch to RUN position. On Impala, connect a test light between ground and master switch assembly harness connector C1 terminal "B" (Yellow wire). See Fig 1 . On Monte Carlo, connect a test light between ground and master switch assembly harness connector terminal "E" (Yellow wire). See Fig 2 . On all models, if test light illuminates, go to next step. If test light does not illuminate, go to step  5 .
  4. On Impala, connect a test light between master switch assembly harness connector C1 terminals "B" (Yellow wire) and "E" (Black wire). On Monte Carlo, connect test light between master switch assembly harness connector terminals "E" (Yellow wire) and "D" (Black wire). On all models, if test light illuminates, go to step  6 . If test light does not illuminate, go to step  7 .
  5. Check for short to ground or open in Yellow wire between master switch assembly and RETAINED ACCSRY PWR circuit breaker (30-amp) in left instrument panel fuse block. See WIRING DIAGRAMS  . Repair as necessary. After repair, go to step  9 .
  6. Check for poor connections at master switch assembly harness connector. Repair as necessary. After repair, go to step  9 . If no problem is found, go to step  8 .
  7. Repair open in Black wire between master switch assembly and ground. Ground point is located below driver's door opening, rear of left "A" pillar. See WIRING DIAGRAMS  . After repair, go to step  9 .
  8. Replace master switch assembly. See WINDOW SWITCH  under REMOVAL & INSTALLATION. After repair, go to next step.
  9. Operate system to verify repairs. If system does not operate properly, go to step  2 . If system operates properly, system is okay.
Fig 1: Identifying Power Window Switch Connector Terminals (Impala Master Switch Connector C1)
G00057177Courtesy of GENERAL MOTORS CORP.
Fig 2: Identifying Power Window Switch Connector Terminals (All Except Impala Master Switch Connector C1)
G00057176Courtesy of GENERAL MOTORS CORP.
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