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Home >> Lexus >> 2002 >> ES 300 >> Repair and Diagnosis >> Body & Frame >> Power Windows >> Component Tests >> Power Window Regulator Motor Assembly Circuit (Driver's Door) >> Circuit Description

Circuit Description

NOTE: The power window system uses a large-scale body multiplex communications system. First of all, confirm the communication function and check that there is no abnormality in the communication system. 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 diagnosis code is recorded. Confirm the diagnosis code.

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

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