Inspection Procedure

1. Disconnect the X13 infrared ray sensor connector
2. Disconnect the L76 air conditioning amplifier connector
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   TESTER CONNECTOR SPECIFIED CONDITION CHART
   
   

   Tester Connection	Condition	Specified Condition
   X13-3 (LIN1) - L76-28 (LIN1)	Always	Below 1 Ω
   X13-3 (LIN1) - Body ground	Always	10 kΩ or higher
   L76-28 (LIN1) - Body ground

   Fig 1: Identifying Terminals Of X13 Infrared Ray Sensor And L76 Air Conditioning Amplifier Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

1. Replace the infrared ray sensor with a normal one (see REMOVAL  )

1. Clear the DTCs (see DTC CHECK / CLEAR  ).
2. Check for DTCs (see DTC CHECK / CLEAR  )

   OK: DTC B1492 is not output. 

NG: REPLACE AIR CONDITIONING AMPLIFIER  (See REMOVAL  )

OK: END (INFRARED RAY SENSOR IS DEFECTIVE)