Seat Belt: Inspection

1. Inspect the buckle switch.
   1. Fasten the seat belt (buckle switch ON).
   Fig 1: Identifying Buckle Switch Terminals (Buckle Switch ON)
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Inspect the continuity and resistance between the terminals, as shown in the illustration and table.

      Standard: 

   Fig 2: Buckle Switch Terminals Continuity Chart (Buckle Switch ON)
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Release the seat belt (buckle switch OFF).
   Fig 3: Identifying Buckle Switch Terminals (Buckle Switch OFF)
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   4. Inspect the continuity and resistance between the terminals, as shown in the illustration and table.

   Standard: 

   Fig 4: Buckle Switch Terminals Continuity Chart (Buckle Switch OFF)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

2. Inspect the circuit for the airbag seat position sensor.
   1. Inspect the continuity between the B7 connector and connector for the airbag seat position sensor, as shown in the illustration and table.
   Fig 5: Inspecting Continuity Between B7 Connector & Connector For Airbag Seat Position Sensor
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard: 

   Fig 6: Airbag Seat Position Sensor Terminals Continuity Chart

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

1. Inspect the buckle switch.
   1. Fasten the seat belt (buckle switch ON).
   2. Inspect the continuity between terminals B8-1 and B8-2, as shown in the illustration.

      Standard: No continuity 

   Fig 7: Inspecting Continuity Between Buckle Switch Terminals B8-1 & B8-2 (Buckle Switch ON)
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Release the seat belt (buckle switch OFF).
   4. Inspect the continuity between terminals B8-1 and B8-2, as shown in the illustration.

      Standard: Continuity 

   Fig 8: Inspecting Continuity Between Buckle Switch Terminals B8-1 & B8-2 (Buckle Switch OFF)
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

2. Inspect the circuit for the occupant detection sensor.
   1. Connect the connector terminals 1 and 2 for the occupant detection sensor.
   2. Inspect the continuity between terminals B8-3 and B8-4, as shown in the illustration.

      Standard: Continuity 

   Fig 9: Inspecting Continuity Between Occupant Detection Sensor Terminals B8-3 & B8-4
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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