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Home >> Toyota >> 2017 >> Corolla LE >> Repair and Diagnosis >> Body & Frame >> Windows >> Power Window Control System - Diagnostic Codes & Symptom Tests (Model Code: ZRE172) >> Power Window Control System >> DTC B2312: Power Window Switch Malfunction [08/2013 - ] >> Description
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DTC B2312: Power Window Switch Malfunction [08/2013 - ]: Description

The power window regulator motor assembly (for driver door) is operated by the power window regulator master switch assembly. The power window regulator motor assembly (for driver door) has motor, regulator and ECU functions.

This DTC is stored when the ECU built into the power window regulator motor assembly (for driver door) determines that the power window regulator master switch assembly is stuck.

DTC No. Detection Item DTC Detection Condition Trouble Area
B2312 Power Window Switch Malfunction
  • Power window regulator master switch assembly (for driver door) stuck
  • Power window regulator master switch assembly held in same position for more than 20 seconds
  • Power window regulator master switch assembly
  • Power window regulator motor assembly (for driver door)
  • Wire harness or connector