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Home >> Lexus >> 2002 >> ES 300 >> Repair and Diagnosis >> Body & Frame >> Power Windows >> Component Tests >> Power Window Regulator Switch Circuit (LH Rear Door) >> Inspection Procedure

Inspection Procedure

  1. Check the DOOR 4 fuse. If the fuse is OK, go to the next step. If the fuse is not good, replace the fuse.
  2. Check the rear power window regulator switch assembly. Check the power source voltage. Disconnect the regulator switch assembly connector. See CONNECTOR IDENTIFICATION . Check the voltage between terminal No. 12 (BDR) of the vehicle's side connector of the regulator switch assembly and the body ground. If the voltage is a constant 10-14 volts, go to the next step. If the voltage is not good, repair or replace the wiring harness or connector.
  3. Check the rear power window regulator switch assembly. Check the GND. Disconnect the master switch assembly connector. Check the continuity between terminals No. 7 (GND) and 10 (E) of the vehicle's side connector of the master switch assembly and the body ground. If there is constant continuity, go to POWER WINDOW REGULATOR MOTOR ASSEMBLY CIRCUIT (LH REAR DOOR) . If there is not constant continuity, repair or replace the wiring harness or connector.
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