Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM1000000025B6B
Model Year Start: 2023 Model: GR Corolla Prod Date Range: [09/2022 - 11/2022]
Title: SLIDING ROOF / CONVERTIBLE: SLIDING ROOF SYSTEM (except TMC Made): B2342; Switch Failure; 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]

DTC

B2342

Switch Failure

DESCRIPTION

This DTC is stored when the sliding roof ECU (sliding roof drive gear sub-assembly) detects that the sliding roof switch (map light assembly) is stuck for 30 seconds or more.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B2342

Switch Failure

Sliding roof ECU (sliding roof drive gear sub-assembly) detects sliding roof switch (map light assembly) is stuck for 30 seconds or more

  • Sliding roof ECU (Sliding roof drive gear sub-assembly)
  • Sliding roof switch (Map light assembly)
  • Wire harness or connector

WIRING DIAGRAM

Refer to DTC B2341.

Click here 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; SLIDING ROOF / CONVERTIBLE: SLIDING ROOF SYSTEM (except TMC Made): B2341,B2344; Sensor (Motor) Failure+

CAUTION / NOTICE / HINT

NOTICE:

If the sliding roof ECU (sliding roof drive gear sub-assembly) is removed and reinstalled or replaced, the sliding roof ECU (sliding roof drive gear sub-assembly) must be initialized.

Click here 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; SLIDING ROOF / CONVERTIBLE: SLIDING ROOF SYSTEM (except TMC Made): INITIALIZATION

PROCEDURE

1.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Sliding Roof / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Sliding Roof > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Open Switch Failure(Past)

Open switch failure signal (Past)

OFF or ON

OFF: No sliding roof open switch failure signal (Past)

ON: Sliding roof open switch failure signal (Past)

-

Close Switch Failure(Past)

Close switch failure signal (Past)

OFF or ON

OFF: No sliding roof close switch failure signal (Past)

ON: Sliding roof close switch failure signal (Past)

-

Up Switch Failure(Past)

Up switch failure signal (Past)

OFF or ON

OFF: No sliding roof tilt up switch failure signal (Past)

ON: Sliding roof tilt up switch failure signal (Past)

-

Down Switch Failure(Past)

Down switch failure signal (Past)

OFF or ON

OFF: No sliding roof tilt down switch failure signal (Past)

ON: Sliding roof tilt down switch failure signal (Past)

-

Open Switch Failure(Current)

Open switch failure signal (Current)

OFF or ON

OFF: No sliding roof open switch failure signal (Current)

ON: Sliding roof open switch failure signal (Current)

-

Close Switch Failure(Current)

Close switch failure signal (Current)

OFF or ON

OFF: No sliding roof close switch failure signal (Current)

ON: Sliding roof close switch failure signal (Current)

-

Up Switch Failure(Current)

Up switch failure signal (Current)

OFF or ON

OFF: No sliding roof tilt up switch failure signal (Current)

ON: Sliding roof tilt up switch failure signal (Current)

-

Down Switch Failure(Current)

Down switch failure signal (Current)

OFF or ON

OFF: No sliding roof tilt down switch failure signal (Current)

ON: Sliding roof tilt down switch failure signal (Current)

-

Body Electrical > Sliding Roof > Data List

Tester Display

Open Switch Failure(Past)

Close Switch Failure(Past)

Up Switch Failure(Past)

Down Switch Failure(Past)

Open Switch Failure(Current)

Close Switch Failure(Current)

Up Switch Failure(Current)

Down Switch Failure(Current)

OK:

OFF is displayed for each Data List item.

OK

REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)

NG

2.

CHECK HARNESS AND CONNECTOR (SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY) - BODY GROUND)

(a) Disconnect the T12 sliding roof ECU (sliding roof drive gear sub-assembly) connector.

(b) Disconnect the T6 sliding roof switch (map light assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

T12-10 (OPN) or T6-14 (OPN) - Body ground

Always

10 kΩ or higher

T12-8 (CLS) or T6-13 (CLS) - Body ground

Always

10 kΩ or higher

T12-5 (UP) or T6-16 (UP) - Body ground

Always

10 kΩ or higher

T12-9 (DWN) or T6-15 (DOWN) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

INSPECT SLIDING ROOF SWITCH (MAP LIGHT ASSEMBLY)

(a) Remove the sliding roof switch (map light assembly).

Click here 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; SLIDING ROOF / CONVERTIBLE: SLIDING ROOF SWITCH ASSEMBLY: REMOVAL

(b) Inspect the sliding roof switch (map light assembly).

Click here 2023 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - 11/2022]; SLIDING ROOF / CONVERTIBLE: SLIDING ROOF SWITCH ASSEMBLY: INSPECTION

OK

REPLACE SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)

NG

REPLACE SLIDING ROOF SWITCH (MAP LIGHT ASSEMBLY)