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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 and master switch 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 (POWER WINDOW REGULATOR MOTOR ASSEMBLY (FOR DRIVER SIDE))

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
  • Power window regulator motor assembly (for driver side)
  • Wire harness or connector
P-DOOR MOTOR (POWER WINDOW REGULATOR MOTOR ASSEMBLY (FOR FRONT PASSENGER SIDE))

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

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

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