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Rear Window Switch Circuit

  1. Using scan tool, check for body control ECU DTCs. If DTCs B1225 or B1226 are present, rear window switch, door lock control switch or related wire harness is faulty. Repair as necessary. If DTCs are not present, go to next step.
  2. Check window switch. See WINDOW SWITCH  under COMPONENT TESTS. Repair as necessary. If window switch is okay, go to next step.
  3. Check wire harness and connectors between appropriate window switch and rear door ECU. See WIRING DIAGRAMS . Repair as necessary. If harness and connectors are okay, go to next step.
  4. Check wire harness and connectors between appropriate rear window switch and master switch. See WIRING DIAGRAMS . Repair as necessary. If harness and connectors are okay, circuit is okay at this time.
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