Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Power Window Switch Malfunction (B2312)

Toyota Corolla Cross (2022-2025) Service Manual / Vehicle Exterior / Window / Glass / Power Window Control System / Power Window Switch Malfunction (B2312)

DESCRIPTION

This DTC is stored when the ECU built into a multiplex network master switch assembly determine that the multiplex network master switch assembly is stuck.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B2312

Power Window Switch Malfunction
  • 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

CAUTION / NOTICE / HINT

NOTICE:

The power window control system uses the LIN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the power window control system after confirming that the communication system is functioning properly.

Click here

HINT:

If DTC B2312 is not output again after the DTC has been cleared, the DTC was stored due to the switch being held in the same position continuously.

PROCEDURE

1.

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Master Switch > Clear DTCs
NEXT

2.

CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Master Switch > Trouble Codes
Result

Proceed to

B2312 is output

A

DTCs are not output

B
A

REPLACE MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

B

END (DTC WAS STORED DUE TO SWITCH BEING OPERATED FOR 20 SECONDS OR MORE)

    READ NEXT:

     D-Door P/W Motor Component Internal Failure (B231D96)

    DESCRIPTION The main body ECU (multiplex network body ECU) communicates with the multiplex network master switch assembly and power window regulator motor assembly (for driver door) via LIN communicat

     P-Door P/W Motor Component Internal Failure (B231E96)

    DESCRIPTION The main body ECU (multiplex network body ECU) communicates with the power window regulator motor assembly (for front passenger door) via LIN communication. This DTC is stored when a powe

     RR-Door P/W Motor Component Internal Failure (B231F96)

    DESCRIPTION The main body ECU (multiplex network body ECU) communicates with the power window regulator motor assembly (for rear RH door) via LIN communication. This DTC is stored when a power window

    SEE MORE:

     Removal

    REMOVAL CAUTION / NOTICE / HINT COMPONENTS (REMOVAL) Procedure Part Name Code 1 FRONT DOOR BELT MOULDING ASSEMBLY 75720 - - - 2 DOOR FRAME UPPER GARNISH 67664 - - - 3 FRONT DOOR WEATHERSTRIP 67862 - - -

     Generator Execution Torque Performance (P0E7100)

    DTC SUMMARY MALFUNCTION DESCRIPTION This DTC indicates that the generator torque execution value does not correspond to the torque command value from the hybrid vehicle control ECU to the generator (MG1). The cause of this malfunction may be one of the following: Area Main Malfunction Descr

    © 2020-2025 Copyright www.tcorollacross.com PT NL