RX300 1999

Window Systems

Print

Power Windows



Diagnosis & Testing
Test One

Specific to:

Lexus RX300 1999-2003

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the switch, with the connectors connected.
  4.  
  5. Connect the test tool as shown in the illustration, check terminal 14 of the wire harness.

    Click image to see an enlarged view

    Fig. Power window switch diagnostic check (test one)-RX300

  6.  
  7. Turn the ignition ON and set the power window switch in the down position.
  8.  
  9. As the window goes down, check that the current flow is about 7 amps.
  10.  
  11. Check that the current flow increases about 14.5 amps or more when the window hits bottom.
  12.  
  13. If the switch does not perform as indicated, replace it.
  14.  

Test Two

Specific to:

Lexus RX300 1999-2003

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Disconnect the connector from the switch.
  4.  
  5. Connect the test tool as shown in the illustration, check terminal 15 of the wire harness.

    Click image to see an enlarged view

    Fig. Power window switch diagnostic check (test two)-RX300

  6.  
  7. As the window goes down, check that the current flow is about 7 amps.
  8.  
  9. Check that the current flow increases about 14.5 amps or more when the window hits bottom.
  10.  
  11. If the switch does not perform as indicated, replace it.
  12.  

 
label.common.footer.alt.autozoneLogo