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Left Rear Passenger's Window Switch Circuit

  1. Using scan tool, check for body control ECU DTCs. If DTC B1226 is present, go to next step. If DTC B1226 is not present, check window motor circuit. See WINDOW MOTOR CIRCUIT . Repair as necessary. If window motor circuit is okay, check left rear passenger's door ECU.
  2. Check window switch. See PASSENGER'S SWITCH  under COMPONENT TESTS. Repair as necessary. If window switch is okay, go to next step.
  3. Check wiring harness and connectors between left rear passenger's switch and left rear passenger's door ECU. See WIRING DIAGRAMS . Repair as necessary. If wiring harness and connectors are okay, go to next step.
  4. Check wiring harness and connectors between left rear passenger's switch and master switch. See WIRING DIAGRAMS . Repair as necessary. If wiring harness and connectors are okay, check window motor circuit. See WINDOW MOTOR CIRCUIT . If window motor circuit is okay, check left rear passenger's door ECU.
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