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Yaw Rate Sensor Communication Stop Mode [08/2014 - ]: Procedure

  1. CHECK CAN BUS WIRE FOR DISCONNECTION (YAW RATE SENSOR BRANCH WIRE) 
    1. Turn the power switch off.
    2. Disconnect the yaw rate sensor connector.
      GTY222122Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Front view of wire harness connector
      (to Yaw Rate Sensor)
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      L12-3 (CANH) - L12-2 (CANL) Power switch off 54 to 69 Ω

    NG → REPAIR OR REPLACE CAN BUS BRANCH WIRE OR CONNECTOR (YAW RATE SENSOR BRANCH WIRE) 

    OK: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL) 
    1. Turn the power switch on (IG).
    2. Measure the voltage according to the value(s) in the table below.
      GTY230740Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      L12-4 (IG) - Body ground Power switch on (IG) 11 to 14 V
      TEXT IN ILLUSTRATION

      *1 Front view of wire harness connector
      (to Yaw Rate Sensor)

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT) 

    OK: Go to next step 

  3. CHECK HARNESS AND CONNECTOR (GROUND TERMINAL) 
    1. Turn the power switch off.
    2. Measure the resistance according to the value(s) in the table below.
      GTY230741Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      L12-1 (GND) - Body ground Always Below 1 Ω
      TEXT IN ILLUSTRATION

      *1 Front view of wire harness connector
      (to Yaw Rate Sensor)

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT) 

    OK → See step   4 

  4. REPLACE YAW RATE SENSOR. Refer to  REMOVAL [08/2014 - ]