Front Passenger Side Seat Belt Warning Light Malfunction

SEAT BELT: SEAT BELT WARNING SYSTEM: Front Passenger Side Seat Belt Warning Light Malfunction
- Front Passenger Side Seat Belt Warning Light Malfunction

DESCRIPTION

The occupant detection ECU detects the state of the front seat inner belt assembly RH and occupant classification sensor when the front passenger seat is occupied with the power switch on (IG). If the front passenger seat belt is not fastened and driver seat belt is fastened, the seat belt warning light on the combination meter assembly blinks. If the seat belt is fastened, the seat belt warning light goes off.

WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
The seat belt warning system uses the CAN communication system. First, confirm that there is no malfunction in the CAN communication system. Refer to the How to Proceed with Troubleshooting procedure How To Proceed With Troubleshooting.

PROCEDURE

1. CHECK DTC OUTPUT (OCCUPANT CLASSIFICATION SYSTEM)

(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(b) Recheck for DTCs Reading and Clearing Diagnostic Trouble Codes.

Result:





B -- GO TO OCCUPANT CLASSIFICATION SYSTEM How To Proceed With Troubleshooting
A -- Continue to next step.

2. CHECK DTC OUTPUT (AIRBAG SYSTEM)

(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

(b) Recheck for DTCs Reading and Clearing Diagnostic Trouble Codes.

Result:





B -- GO TO AIRBAG SYSTEM How To Proceed With Troubleshooting
A -- Continue to next step.

3. READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Occupant Detection / Data List.

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

Occupant Detection (Occupant Detection ECU)





Result





C -- REPLACE OCCUPANT DETECTION ECU Removal

B -- REPLACE FRONT SEAT INNER BELT ASSEMBLY RH Removal
A -- Continue to next step.

4. READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(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.

SRS Airbag (Airbag Sensor Assembly)





Result





B -- REPLACE AIRBAG SENSOR ASSEMBLY Removal

A -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting