Diagnosis System

1. Turn the ignition switch to ON.
2. The passenger airbag ON/OFF indicator (ON and OFF) comes on for approximately 4 seconds, and then turns off for approximately 2 seconds.
3. Approximately 6 seconds after the ignition switch is turned to ON, the passenger airbag ON/OFF indicator will be ON/OFF depending on the conditions listed below.
   INDICATOR OPERATION
   
   

   Front Passenger Seat Condition	Passenger Airbag ON/OFF Indicator		SRS Warning Light
   	ON Indicator	OFF Indicator
   Vacant	OFF	OFF	OFF
   Adult is seated	ON	OFF	OFF
   Child is seated	OFF	ON	OFF
   Child restraint system is set	OFF	ON	OFF
   Occupant classification system failure	OFF	ON	ON

   HINT: 

   • The passenger airbag ON/OFF indicator operates based on the timing chart below in order to check the indicator light circuit.
   • When the occupant classification system has trouble, both the SRS warning light and the passenger airbag ON/OFF indicator (OFF) come on. In this case, check the DTCs in Airbag System first.
     Fig 1: Passenger Airbag ON/OFF Indicator Timing Chart

     Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT: 

Refer to the table in the previous step regarding the passenger airbag ON/OFF indicator when approximately 6 seconds have elapsed after the ignition switch is turned to ON.