Front Seat Inner Belt Assembly: Inspection

1. Fasten the seat belt (Buckle switch is ON).
2. Check the continuity or resistance between the terminals.

   Standard resistance 

   CONNECTOR TERMINALS SPECIFIED CONDITION TABLE
   
   

   Terminal No.	Specified Condition
   A-1 - A-4	1,330 Ω
   A-1 - A-6	Below 1 Ω

   Fig 1: Identifying Front Seat Inner Belt Assembly Connector Terminals (Buckle Switch ON)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Release the seat belt (Buckle switch is OFF).
4. Check the continuity or resistance between the terminals.

Fig 2: Identifying Front Seat Inner Belt Assembly Connector Terminals (Buckle Switch OFF)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard resistance 

Fig 3: Identifying Airbag Seat Position Sensor Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If the result is not as specified, replace the inner belt assembly.

1. Check the continuity between the terminals of connector A and the connector of the airbag seat position sensor.

   Standard resistance 

   CONNECTOR TERMINALS SPECIFIED CONDITION TABLE
   
   

   Terminal No.	Specified Condition
   A-5 - 1 (Connector of airbag seat position sensor)	Below 1 Ω
   A-3 - 2 (Connector of airbag seat position sensor)

   Fig 4: Identifying Occupation Detection Sensor Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   If the result is not as specified, replace the inner belt assembly.

1. Short the circuit between connector terminals 1 and 3 of the occupation detection sensor (Seat is occupied).
2. Fasten the seat belt (Buckle switch is ON).
3. Check the continuity between the terminals.

   Standard resistance 

   CONNECTOR TERMINALS SPECIFIED CONDITION TABLE
   
   

   Terminal No.	Specified Condition
   A-2 - A-3	No Continuity
   A-4 - A-3	No Continuity
   A-2 - 1 (Connector of occupation detection sensor)	Below 1 Ω
   A-3 - 3 (Connector of occupation detection sensor)	No Continuity
   A-4 - 3 (Connector of occupation detection sensor)	Below 1 Ω

   Fig 5: Identifying Occupation Detection Sensor Connector Terminals (Buckle Switch ON)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Release the seat belt (Buckle switch is OFF).
5. Check the continuity between the terminals.

Standard resistance 

Fig 6: Identifying Occupation Detection Sensor Connector Terminals (Buckle Switch OFF)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If the result is not as specified, replace the inner belt assembly.

1. Disconnect the occupation detection sensor connector (Seat is not occupied).
   Fig 7: Identifying Occupation Detection Sensor Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Fasten the seat belt (Buckle switch is ON).
3. Check the continuity between the terminals.

   Standard resistance 

   CONNECTOR TERMINALS SPECIFIED CONDITION TABLE
   
   

   Terminal No.	Specified Condition
   A-2 - A-3	No Continuity
   A-4 - A-3	No Continuity
   A-2 - 1 (Connector of occupation detection sensor)	Below 1 Ω
   A-3 - 3 (Connector of occupation detection sensor)	No Continuity
   A-4 - 3 (Connector of occupation detection sensor)	Below 1 Ω

   Fig 8: Identifying Occupation Detection Sensor Connector Terminals (Buckle Switch ON)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Release the seat belt (Buckle switch is OFF).
5. Check the continuity between the terminals.

Standard resistance 

Fig 9: Identifying Occupation Detection Sensor Connector Terminals (Buckle Switch OFF)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

If the result is not as specified, replace the inner belt assembly.