Inspection Procedure

1. Disconnect the B8 sensor connector.
2. Measure the voltage of the wire harness side connector.

   Standard voltage 

   VOLTAGE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   B8-5 (IGB) - Body ground	Power switch ON (IG)	10 to 14 V

Fig 1: Identifying B8 Sensor Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG:  Go to step  3

OK: Go to Next Step 

1. Disconnect the B8 sensor connector.
2. Disconnect the A54 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   STANDARD RESISTANCE REFERENCE
   
   

   Tester Connection	Specified Condition
   B8-1 (LGND) - A54-1 (LGND)	Below 1 Ω
   B8-1 (LGND) - Body ground	10 kΩ or higher

Fig 2: Identifying B8 Sensor Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE  (See PROBLEM SYMPTOMS TABLE  )

1. Disconnect the B8 sensor connector.
2. Disconnect the K13 ECU connector.
3. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   STANDARD RESISTANCE REFERENCE
   
   

   Tester Connection	Specified Condition
   B8-5 (IGB) - K13-13 (IGB)	Below 1 Ω
   B8-5 (IGB) - Body ground	10 kΩ or higher

Fig 3: Identifying K13 ECU Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE  (See PROBLEM SYMPTOMS TABLE  )