LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2003 >> SC 430 >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System - Diagnosis >> DTC B1221 Power Window Switch Circuit On Driver Door >> Circuit Discretion
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit Discretion

This DTC is output when any switch of the power window regulator master switch is operated.

HINT:

DTC 1221 TROUBLE CONDITIONS

DTC No. DTC detecting condition Trouble area
B1221 Power window switch or door control switch on power window master switch is operating
  • Power window regulator master switch
  • Multiplex network door ECU front LH