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Home >> Lexus >> 2003 >> SC 430 >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 155 (Power Window Control System - Diagnostics) >> Power Window Regulator Motor ASSY RH Limit Switch And Pulse Sensor Circuit (Passenger's Door) >> Circuit Description
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Circuit Description

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

When the ignition switch is ON, the passenger's door ECU (power window switch) monitors the signal via the power window regulator master switch and drives the power window motor.

NOTE: Power window system use a large-scale body multiplex communications. First of all, confirm the communication function depending on the "how to proceed with troubleshooting", and check that there is no abnormality in the communication system. Then finally proceed with the troubleshooting. Also, if the power window system has a malfunction in the jam protection function, the power window AUTO UP/DOWN does not operate and a diagnostic code is recorded. Confirm the diagnostic code before troubleshooting.
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