Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM1000000028LTI
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [11/2022 -           ]
Title: WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM: B231D96; D-Door P/W Motor Component Internal Failure ; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]

DTC

B231D96

D-Door P/W Motor Component Internal Failure

DESCRIPTION

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

This DTC is stored when a power window regulator motor assembly LH (for driver door) is malfunctioning, or the ECU built into the power window regulator motor assembly LH (for driver door) determines that the fully closed power window position has deviated approximately 20 mm (0.787 in.) or more from the normal position.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

DTC Output from

B231D96

D-Door P/W Motor Component Internal Failure
  • Either condition is met:
    1. Power window regulator motor assembly LH (for driver door) is malfunctioning
    2. ECU in power window regulator motor assembly LH (for driver door) determines that fully closed power window position has deviated approx. 20 mm (0.787 in.) or more from normal position
  • Incorrect installation of power window components
  • Overheated power window regulator motor assembly LH (for driver door)
  • Power window regulator motor assembly LH (for driver door)
  • Wire harness or connector

Main Body

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Inspect the fuses for circuits related to this system before performing the following procedure.
  • If a power window regulator motor assembly LH (for driver door) has been replaced with a new one, initialize the power window control system.

    Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM: REGISTRATION

  • If a power window regulator motor assembly LH (for driver door) and door window regulator sub-assembly have been removed and installed, or if a power window regulator motor assembly LH (for driver door) was reused when a door glass or door glass run was replaced, initialize the power window control system.

    Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM: REGISTRATION

  • 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 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

PROCEDURE

1.

CLEAR DTC

(a) Clear the DTCs.

Body Electrical > Main Body > Clear DTCs

NEXT

2.

CHECK FOR DTC

(a) Check for DTCs.

Body Electrical > Main Body > Trouble Codes

Result

Proceed to

B231D96 is output

A

B231D96 is not output

B
B

USE SIMULATION METHOD TO CHECK

A

3.

CHECK HARNESS AND CONNECTOR (POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (for Driver Door) - AUXILIARY BATTERY AND BODY GROUND)

(a) Disconnect the L2 power window regulator motor assembly LH (for driver door) connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

L2-2 (B) - Body ground

Always*1

Ignition switch off*2

11 to 14 V
  • *1: for Gasoline Model
  • *2: for HV Model

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

L2-1 (GND) - Body ground

Always

Below 1 Ω
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

4.

PERFORM ACTIVE TEST USING GTS

(a) Perform the Active Test according to the display on the GTS.

Body Electrical > Main Body > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

D Door Power Window UP

Driver door power window up activate

OFF/ON

-

D Door Power Window DOWN

Driver door power window down activate

OFF/ON

-

Body Electrical > Main Body > Active Test

Tester Display

D Door Power Window UP

Body Electrical > Main Body > Active Test

Tester Display

D Door Power Window DOWN

HINT:

Up and down movement does not occur if the arrow is not pressed and held.

OK:

Driver door power window operates normally.

NG

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (for Driver Door)

OK

5.

PERFORM INITIALIZATION

(a) Initialize the power window regulator motor assembly LH (for driver door).

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM: REGISTRATION

NEXT

6.

CHECK POWER WINDOW CONTROL SYSTEM

(a) Check that the driver door power window operates normally by opening and closing it.

Click here 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 -        ]; WINDOW / GLASS: POWER WINDOW CONTROL SYSTEM: OPERATION CHECK

OK:

Driver door power window operates normally.

NG

REPLACE POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (for Driver Door)

OK

7.

CHECK WHETHER PARTS HAVE BEEN INSTALLED CORRECTLY

(a) Check that the driver door power window components are installed correctly.

OK:

Driver door power window components are installed correctly.

OK

END (OVERHEATED POWER WINDOW REGULATOR MOTOR ASSEMBLY LH (for Driver Door) WAS DEFECTIVE)
NG

INSTALL PARTS CORRECTLY