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.
   2. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      RESISTANCE REFERENCE
      
      

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

      Fig 1: Identifying L73 Center Airbag Sensor Connector Terminals

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

      Standard voltage 

      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 )