2002 Lexus GS 430FACTORY OEM SERVICE PROCEDURE

Inspection Procedure

NOTE: If using the hand-held tester, start the inspection from step  1 and if not using the hand-held tester, start from step  2.
  1. Check the power window motor using the hand-held tester. Connect the hand-held tester to the DLC3. Check the jam protection limit switch using DATA LIST. If the results are OK, check the jam protection pulse switch circuit. See JAM PROTECTION PULSE SWITCH CIRCUIT (FRONT) . If the results are not good, go to the next step.
  2. Check the jam protection limit switch. See JAM PROTECTION LIMIT SWITCH (FRONT)  under COMPONENT TESTS. If the results are OK, go to the next step. If the results are not good, replace the power window motor. See FRONT DOOR POWER WINDOW REGULATOR  under COMPONENT TESTS.
  3. Check the wire harness and connector between the jam protection limit switch and door ECU (driver or passenger). If the results are OK, check the jam protection pulse switch circuit. See JAM PROTECTION PULSE SWITCH CIRCUIT (FRONT) . If the results are not good, repair or replace the wire harness or connector.
Chapter Navigation
Return to Chapter: Jam Protection Limit Switch Circuit (Front)
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.