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Home >> Toyota >> 2002 >> Highlander Base, 2.4 D, AWD >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System - Diagnostics >> Problem Symptoms Table >> DTC B1221/21: Power Window Switch Circuit On Driver Door >> Inspection Procedure

Inspection Procedure

  1. Check Power Window Regulator Master Switch Assembly 
    1. Check if code B1221 will disappear but only B1211 (communication stop) will be output when the power window regulator master switch assembly connector is disconnected.
    1. A : Replace Multiplex Network Body ECU 
    2. B : Replace Power Window Regulator Master Switch Assembly 
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