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Home >> Lexus >> 2004 >> GX 470 >> Repair and Diagnosis (Single Page) >> Body & Frame >> Windows >> Power Window Control System - Diagnosis >> DTC B1231, B1232: Jam Protection Limit/Pulse Switch Circuit On Driver Door >> Circuit Description

Circuit Description

The power window master switch monitors the condition of the power window motor to detect the position of the door glass by using pulse signals output from the 2 pulse sensors in the power window motor.

DTC CHART SPECIFICATION

DTC No. DTC Detection Condition Trouble Area
B1231
B1232		 Pulse sensor circuit in power window motor malfunctions
  • Power window regulator motor assy LH (Driver side)
  • Wire harness
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