Inspection Procedure

HINT:

Operating the engine switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.

1. CHECK HARNESS AND CONNECTOR (CENTER AIRBAG SENSOR - BATTERY AND BODY GROUND) 
   1. Disconnect the L73 center airbag sensor connector.
      Fig 1: Identifying L73 Center Airbag Sensor Connector Terminals

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Condition	Specified Condition
      L73-25 (E1) - Body ground	Always	Below 1 Ω
      L73-26 (E2) - Body ground	Always	Below 1 Ω

   3. Measure the voltage according to the value(s) in the table below.

      Standard voltage 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Switch Condition	Specified Condition
      L73-21 (IG2) - Body ground	Engine switch on (IG)	11 to 14 V

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: REPLACE CENTER AIRBAG SENSOR ASSEMBLY  (See REMOVAL )