Driver Side Seat Belt Warning Light does not Operate: Procedure

1. Clear DTCs. Refer to DTC CHECK / CLEAR .*1
2. Clear DTCs. Refer to DTC CHECK / CLEAR .*2
3. Recheck for DTCs. Refer to DTC CHECK / CLEAR .*1
4. Recheck for DTCs. Refer to DTC CHECK / CLEAR .*2
   • *1: for Built-in Type Yaw Rate Sensor
   • *2: for Separate Type Yaw Rate Sensor

   Result

   Result	Proceed to
   DTC is not output	A
   DTC is output (for Built-in Type Yaw Rate Sensor)	B
   DTC is output (for Separate Type Yaw Rate Sensor)	C

B → See step   3 

C → See step   10 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / SRS Airbag / Data List.
5. Read the Data List according to the display on the Techstream.
   SRS AIRBAG (AIRBAG SENSOR ASSEMBLY)
   
   

   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	-

   RESULT
   
   

   Result	Proceed to
   Unset or Set is displayed on the Techstream screen according to the driver seat belt condition	A
   Unset or Set is not displayed normally on the Techstream screen according to the driver seat belt condition (for Manual Seat)	B
   Unset or Set is not displayed normally on the Techstream screen according to the driver seat belt condition (for Power Seat)	C
   NG is displayed on the Techstream screen	D

B → See step   4 

C → See step   6 

D → See step   5 

A: Go to next step 

1. Replace the main body ECU (multiplex network body ECU). Refer to REMOVAL .

NEXT: Go to next step 

1. Check the operation of the seat belt warning light. Refer to ON-VEHICLE INSPECTION .

   OK

   The seat belt warning light operates normally.

NG → See step   9 

OK → END (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) WAS DEFECTIVE)