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DTC B2312: Power Window Switch Malfunction: Description

The power window regulator motor is driven by operating the power window regulator switch. The power window regulator consists of the motor, regulator and ECU.

This DTC is stored 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: 

This DTC may be stored for all the windows.

NOTE:
  • When a power window regulator is reinstalled or replaced, the power window control system must be initialized.
  • After any door glass or a door glass run has been replaced, the jam protection function may operate unexpectedly when the auto up function is used. In such cases, the auto up function can be resumed by repeating the following operation at least 5 times:
    1. Close the power window by fully pulling up the power window switch and holding it in the auto up position.
    2. Open the power window by fully pushing down the power window switch.
MASTER SWITCH

DTC Code DTC Detection Condition Trouble Area
B2312 Either condition is met:
  • The multiplex network master switch (door control switch and power window switch) is stuck.
  • The multiplex network master switch (door control switch and power window switch) is held in the same position for more than 20 sec.
 Multiplex network master switch
D-DOOR MOTOR

DTC Code DTC Detection Condition Trouble Area
B2312 Either condition is met:
  • The multiplex network master switch is stuck.
  • The multiplex network master switch is held in the same position for more than 20 sec.
  • Multiplex network master switch
  • Front power window regulator motor LH
  • Harness or connector
P-DOOR MOTOR

DTC Code DTC Detection Condition Trouble Area
B2312 Either condition is met:
  • The Power window regulator switch is stuck.
  • The Power window regulator switch is held in the same position for more than 20 sec.
  • Power window regulator switch RH
  • Front power window regulator motor RH
  • Harness or connector
RL-DOOR MOTOR

DTC Code DTC Detection Condition Trouble Area
B2312 Either condition is met:
  • The Rear power window regulator switch LH is stuck.
  • The Rear power window regulator switch LH is held in the same position for more than 20 sec.
  • Rear power window regulator switch LH
  • Rear power window regulator motor LH
  • Harness or connector
RR-DOOR MOTOR

DTC Code DTC Detection Condition Trouble Area
B2312 Either condition is met:
  • The Rear power window regulator switch RH is stuck.
  • The Rear power window regulator switch RH is held in the same position for more than 20 sec.
  • Rear power window regulator switch RH
  • Rear power window regulator motor RH
  • Harness or connector
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