Toyota CH-R Service Manual: Driver Side Seat Belt Warning Light does not Operate

DESCRIPTION

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

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • The seat belt warning system uses the CAN communication system. First, confirm that there are no malfunctions in the CAN communication system. Refer to How to Proceed with Troubleshooting.

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  • 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.

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.

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

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PROCEDURE

1.

CHECK DTC OUTPUT (AIRBAG SYSTEM)

(a) Clear the DTCs.

Click here

Body Electrical > SRS Airbag > Clear DTCs

(b) Check for DTCs.

Click here

Body Electrical > SRS Airbag > Trouble Codes

Result

Proceed to

DTCs are not output

A

DTCs are output

B

B

GO TO AIRBAG SYSTEM

A

2.

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 / SRS Airbag / Data List.

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

Body Electrical > SRS Airbag > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Left side Buckle SW

LH buckle switch

Unset, Set or NG

Unset: Seat belt not fastened

Set: Seat belt fastened

NG: Data is not determined

-

Body Electrical > SRS Airbag > Data List

Tester Display

Left side Buckle SW

Result

Proceed to

Unset or Set is displayed on the Techstream according to the driver seat belt condition

A

Unset or Set is not displayed correctly on the Techstream according to the driver seat belt condition

B

NG is displayed on the Techstream

C

A

USE SIMULATION METHOD TO CHECK

B

REPLACE FRONT SEAT INNER BELT ASSEMBLY LH

C

REPLACE AIR BAG SENSOR ASSEMBLY

    On-vehicle Inspection
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