Last Modified: 08-22-2025 6.11:8.1.0 Doc ID: RM0000003TPDE3J
Model Year Start: 2026 Model: GR Corolla Prod Date Range: [08/2025 -           ]
Title: SEAT BELT: SEAT BELT WARNING SYSTEM (w/o Occupant Classification System): Driver Side Seat Belt Warning Light does not Operate; 2026 MY Corolla Corolla Hatchback Corolla HV GR Corolla [08/2025 -        ]

Driver Side Seat Belt Warning Light does not Operate

DESCRIPTION

The combination meter assembly blinks or turns off the seat belt warning light on the combination meter assembly in accordance with the state of the front seat inner belt assembly LH.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
  • When replacing the combination meter assembly, update the ECU security key.

    Click here 2023 - 2026 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 -        ]; SETUP: WHEN REPLACING OR REMOVING/INSTALLING PARTS: UPDATE ECU SECURITY KEY

HINT:

  • The seat belt warning light on the combination meter assembly is used for both the driver seat and front passenger seat. Check that the operation of the seat belt warning light is normal first.

    Click here 2026 MY Corolla Corolla Hatchback Corolla HV GR Corolla [08/2025 -        ]; SEAT BELT: SEAT BELT WARNING SYSTEM (w/o Occupant Classification System): ON-VEHICLE INSPECTION

  • If the seat belt warning light does not operate for both the driver seat and front passenger seat, replace the combination meter assembly.

    Click here 2025 - 2026 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2024 -        ]; METER / GAUGE / DISPLAY: COMBINATION METER: REMOVAL

PROCEDURE

1.

READ VALUE USING GTS

(a) Read the Data List according to the display on the GTS.

Body Electrical > Combination Meter > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Driver Buckle Switch

Driver seat belt buckle switch

Fastened or Not Fastened

Fastened: Driver side seat belt fastened

Not Fastened: Driver side seat belt not fastened

-

Body Electrical > Combination Meter > Data List

Tester Display

Driver Buckle Switch

OK:

The GTS display changes correctly in response to the driver seat belt condition.

OK

REPLACE COMBINATION METER ASSEMBLY

NG

2.

INSPECT FRONT SEAT INNER BELT ASSEMBLY LH

Click here 2026 MY Corolla Corolla Hatchback Corolla HV GR Corolla [08/2025 -        ]; SEAT BELT: FRONT SEAT INNER BELT ASSEMBLY: INSPECTION

NG

REPLACE FRONT SEAT INNER BELT ASSEMBLY LH

OK

3.

CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY LH - COMBINATION METER ASSEMBLY AND BODY GROUND)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

O224-3 (+) - I4-29 (BKL)

Always

Below 1 Ω

O224-3 (+) or I4-29 (BKL) - Body ground

Always

10 kΩ or higher

O224-2 (E) - Body ground

Always

Below 1 Ω
OK

REPLACE COMBINATION METER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR