Inspection Procedure

HINT:

If there is an open in the ground circuit (Airbag sensor assembly center), the airbag sensor assembly center outputs DTCs. Perform troubleshooting with the "Supplemental Restraint System" (See DTC CHECK/CLEAR ).

1. PERFORM ACTIVE TEST BY TECHSTREAM (DRIVER SIDE SEAT BELT) 
   1. Connect Techstream to the DLC3.
   2. Ignition switch on (IG).
   3. Turn the tester ON.
   4. Enter following menus: Body Electrical / Combination Meter / Active Test.
   5. Check the operation by referring to the table below.

      Combination Meter: 

      ACTIVE TEST DETAIL - COMBINATION METER
      
      

      Tester Display	Test Part	Control Range	Diagnostic Note
      Driver Side Seat Belt	Driver Side Seat Belt	Driver side seat belt indicator light is OFF/ON	Confirm that the vehicle is stopped, engine idling

      OK: 

      Indicator light (ON / OFF) can be switched ACTIVE TEST. 

   NG: REPLACE COMBINATION METER ASSEMBLY 

   OK: Go to next step 

2. READ VALUE OF TECHSTREAM (DRIVER BUCKLE SW) 
   1. Connect Techstream to the DLC3.
   2. Ignition switch on (IG).
   3. Turn the tester ON.
   4. Enter following menus: Body Electrical / Combination Meter / Active Test.
   5. Check the values by referring to the table below.

      SRS Airbag: 

      DATA LIST - SRS AIRBAG
      
      

      Tester Display	Measurement Item/Range	Control Range	Diagnostic Note
      Driver Buckle SW	Driver side buckle switch	ON: Driver side seat belt is fastened OFF: Driver side seat belt is unfastened	Confirm that the vehicle is stopped, engine idling

      OK: 

      Switch condition (ON / OFF) can be switched by actual operation. 

   NG: REPLACE COMBINATION METER ASSEMBLY 

   OK: Go to next step 

3. INSPECT FRONT SEAT INNER BELT ASSEMBLY LH (DRIVER SIDE) 
   1. Disconnect the connector from the front seat inner belt assembly (Driver Side).
   2. Measure the resistance according to the value(s) in the table below.

      Resistance 

      RESISTANCE SPECIFICATION
      
      

      Tester Connection	Condition	Specified Condition
      6 - 3	Seat belt is fastened	Approx. 330 Ω
      6 - 3	seat belt is unfastened	Approx. 1,330 Ω

   NG: REPLACE FRONT SEAT INNER BELT ASSEMBLY LH (DRIVER SIDE) 

   Fig 1: Identifying Front Seat Inner Belt Connector Terminals (Driver Side)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: Go to next step 

4. CHECK HARNESS OR CONNECTOR (BODY ECU - FRONT SEAT INNER BELT ASSEMBLY (DRIVER SIDE)) 
   1. Disconnect the connector from the front seat inner belt assembly (Driver Side).
   2. Measure the resistance according to the value(s) in the table below.

      Resistance 

      RESISTANCE SPECIFICATION
      
      

      Tester Connection	Condition	Specified Condition
      K2-3 - Body ground	Always	Below 1 Ω

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   Fig 2: Identifying Front Seat Inner Belt Connector Terminals (Driver Side)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK:  Go to MULTIPLEX COMMUNICATION SYSTEM