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DTC B2312: Power Window Switch Malfunction: Description

The power window regulator motor assembly is operated by the multiplex network master switch assembly or power window regulator switch assembly. The power window regulator motor assembly has motor, regulator and ECU functions.

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

HINT: 

DTC B2312 can be stored in the multiplex network master switch assembly and in each power window regulator motor assembly (power window ECU).

MASTER SWITCH (MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY)

DTC No. DTC Detection Condition Trouble Area
B2312
  • Multiplex network master switch assembly stuck
  • Multiplex network master switch assembly held in same position for more than 20 seconds
Multiplex network master switch assembly
D-DOOR MOTOR (FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH)

DTC No. DTC Detection Condition Trouble Area
B2312
  • Multiplex network master switch assembly 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
  • Wire harness or connector
P-DOOR MOTOR (FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH)

DTC No. DTC Detection Condition Trouble Area
B2312
  • Power window regulator switch assembly stuck
  • Power window regulator switch assembly held in same position for more than 20 seconds
  • Front power window regulator switch assembly RH
  • Front power window regulator motor assembly RH
  • Wire harness or connector
RL-DOOR MOTOR (REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY LH)

DTC No. DTC Detection Condition Trouble Area
B2312
  • Power window regulator switch assembly stuck
  • Power window regulator switch assembly held in same position for more than 20 seconds
  • Rear power window regulator switch assembly LH
  • Rear power window regulator motor assembly LH
  • Wire harness or connector
RR-DOOR MOTOR (REAR POWER WINDOW REGULATOR MOTOR ASSEMBLY RH)

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