Inspection Procedure

1. Disconnect the B9 sensor connector.
2. Measure the voltage according to the value(s) in the table below.

   Standard voltage 

   VOLTAGE SPECIFICATION CHART
   
   

   Tester Connection	Condition	Specified Condition
   B9-S (IGB) - Body ground	Engine switch on (IG)	10 to 14 V

Fig 1: Identifying B9 Sensor Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG:  Go to step  3

OK: Go to Next Step 

1. Disconnect the B9 sensor connector.
2. Disconnect the A5 ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard resistance 

   RESISTANCE SPECIFICATION CHART
   
   

   Tester Connection	Specified Condition
   A5-9 (LGND) - B9-1 (LGND)(*1) A5-29 (LGND) - B9-1 (LGND)(*2)	Below 1 Ω
   B9-1 (LGND) - Body ground	10 kΩ or higher
   B9-2 (SGND) - Body ground	Below 1 Ω
   HINT: *1: 2GR-FSE *2: 4GR-FSE

Fig 2: Identifying B9 Sensor Connector And A5 ECM Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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

1. Disconnect the B9 sensor connector.
2. Disconnect the J17 ECU connector.
3. Measure the resistance according to the value(s) in the table below

   Standard resistance 

   RESISTANCE SPECIFICATION CHART
   
   

   Tester Connection	Specified Condition
   B9-S (IGB) - J17-13 (IGB)	Below 1 Ω
   J17-13 (IGB) - Body ground	10 kΩ or higher

Fig 3: Identifying J17 ECU Connector And B9 Sensor Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

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