Inspection Procedure

1. Disconnect the Y1 yaw rate sensor connector.
Fig 1: Checking CAN Bus Line Disconnection (Yaw Rate Sensor Branch Wire)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance of the wire harness side connector.

   Standard resistance 

   TESTER CONNECTION - SPECIFIED CONDITION
   
   

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

NG : REPLACE YAW RATE SENSOR BRANCH WIRE AND CONNECTOR (CANH, CANL) 

OK : GO TO NEXT STEP 

1. Measure the resistance of the wire harness side connector.

   Standard resistance 

   TESTER CONNECTION - SPECIFIED CONDITION
   
   

   Tester Connection	Specified Condition
   Y1-1 (GND) - Body ground	Below 1 Ω

2. Measure the voltage of the wire harness side connector.

   Standard voltage 

   TESTER CONNECTION - SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   Y1-5 (IG)- Body ground	Power switch ON (IG)	10 to 14 V

NG : REPAIR OR REPLACE HARNESS AND CONNECTOR 

Fig 2: Checking Wire Harness (Yaw Rate Sensor - Battery And Body Ground)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : REPLACE YAW RATE SENSOR