Inspection Procedure

1. Measure the resistance according to the value(s) in CAN BUS LINE (MAIN BUS LINE FOR DISCONNECTION, BUS LINES FOR SHORT CIRCUIT)  .

   Standard resistance 

   CAN BUS LINE (MAIN BUS LINE FOR DISCONNECTION, BUS LINES FOR SHORT CIRCUIT)
   
   

   Tester Connection	Condition	Specified value	Result
   D1-6 (CANH) - D1-14 (CANL)	IG switch OFF	54 to 69 Ω	OK
   D1-6 (CANH) - D1-14 (CANL)	IG switch OFF	69 Ω higher	NG-A
   D1-6 (CANH) - D1-14 (CANL)	IG switch OFF	Below 54 Ω	NG-B

   Fig 1: Checking CAN Bus Line (Main Bus Line For Disconnection, Bus Lines For Short Circuit)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG-A: CHECK CAN MAIN BUS LINE FOR DISCONNECTION 

NG-B: CHECK SHORT IN CAN BUS LINES 

OK: GO TO NEXT STEP 

1. Measure the resistance according to the value(s) in CAN BUS LINE FOR SHORT TO +B  .

   Standard resistance 

   CAN BUS LINE FOR SHORT TO +B
   
   

   Tester Connection	Condition	Specified value
   D1-6 (CANH) - D1-16 (BAT)	IG switch OFF	1 M Ω or higher
   D1-14 (CANL) - D1-16 (BAT)	IG Switch OFF	1 M Ω or higher

   Fig 2: Checking CAN Bus Line For Short To +B

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: CHECK CAN BUS LINE FOR SHORT TO +B 

OK: GO TO NEXT STEP 

1. Measure the resistance according to the value(s) in Fig 3 .

   Standard resistance 

   CAN BUS LINE FOR SHORT TO GND
   
   

   Tester Connection	Condition	Specified value
   D1-4 (CG) - D1-6 (CANH)	IG switch OFF	3 kΩ or higher
   D1-4 (CG) - D1-14 (CANL)	IG Switch OFF	3 kΩ or higher

   Fig 3: Checking CAN Bus Line For Short To GND

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: CHECK CAN BUS LINE FOR SHORT TO GND 

OK: GO TO NEXT STEP 

1. Disconnect the connector (Y1) from the yaw rate sensor.
2. Measure the resistance according to the value(s) in CAN BUS LINE (YAW RATE SENSOR SUB BUS LINE)  .

   Standard resistance 

   CAN BUS LINE (YAW RATE SENSOR SUB BUS LINE)
   
   

   Tester Connection	Condition	Specified value
   Y1-2 (CANL) - Y1-3 (CANH)	IG switch OFF	54 to 69Ω

   Fig 4: Checking CAN Bus Line (Yaw Rate Sensor Sub Bus Line)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE YAW RATE SENSOR OR SUB BUS LINE OR CONNECTOR (CANH, CAN-L) 

OK: GO TO  HOW TO PROCEED WITH TROUBLESHOOTING