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DTC B2312: Power Window Switch Malfunction [10/2017 - 10/2023]: Description

The power window regulator motor assemblies are operated by the multiplex network master switch assembly, power window regulator switch assembly or rear power window regulator switch assemblies. The power window regulator motor assemblies have motor, regulator and ECU functions.

This DTC is output when an ECU built into a power window regulator motor assembly and multiplex network master switch assembly determines that the multiplex network master switch assembly, power window regulator switch assembly or rear power window regulator switch assembly is stuck.

MASTER SWITCH

DTC No. Detection Item DTC Detection Condition Trouble Area
B2312 Power Window Switch Malfunction
  • Multiplex network master switch assembly stuck (except driver door)
  • Multiplex network master switch assembly held in same position for more than 20 seconds (except driver door)
 Multiplex network master switch assembly
D-DOOR MOTOR

DTC No. Detection Item DTC Detection Condition Trouble Area
B2312 Power Window Switch Malfunction
  • Front power window regulator motor assembly LH stuck
  • Multiplex network master switch assembly held in same position for more than 20 seconds
  • Multiplex network master switch assembly
  • Front power window regulator motor assembly LH
  • Harness or connector
P-DOOR MOTOR

DTC No. Detection Item DTC Detection Condition Trouble Area
B2312 Power Window Switch Malfunction
  • Power window regulator switch assembly stuck
  • Power window regulator switch assembly held in same position for more than 20 seconds
  • Power window regulator switch assembly
  • Front power window regulator motor assembly RH
  • Harness or connector
RL-DOOR MOTOR

DTC No. Detection Item DTC Detection Condition Trouble Area
B2312 Power Window Switch Malfunction
  • Rear power window regulator switch assembly LH stuck
  • Rear power window regulator switch assembly LH held in same position for more than 20 seconds
  • Rear power window regulator switch assembly LH
  • Rear power window regulator motor assembly LH
  • Harness or connector
RR-DOOR MOTOR

DTC No. Detection Item DTC Detection Condition Trouble Area
B2312 Power Window Switch Malfunction
  • Rear power window regulator switch assembly RH stuck
  • Rear power window regulator switch assembly RH held in same position for more than 20 seconds
  • Rear power window regulator switch assembly RH
  • Rear power window regulator motor assembly RH
  • Harness or connector
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