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Steering Angle Sensor Communication Stop Mode: Procedure

  1. CHECK OPEN IN CAN BUS WIRE (STEERING ANGLE SENSOR BRANCH WIRE) 
    1. Turn the ignition switch to the LOCK position.
    2. Disconnect the steering angle sensor connector (S10).
    3. Measure the resistance according to the value in the table below.
      Fig 1: Identifying CANH & CANL Terminal Of Steering Angle Sensor Connector
      GTY125760Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance

      Tester connection Condition Specified value
      S10-9 (CANL) - S10-10 (CANH) Ignition switch off 54 to 69 Ω

    NG → REPAIR OR REPLACE STEERING ANGLE SENSOR BRANCH WIRE OR CONNECTOR (CAN-H, CAN-L) 

    OK: Go to next step 

  2. CHECK WIRE HARNESS (IG, ESS) 
    1. Measure the resistance according to the value in the table below.
      Fig 2: Identifying ESS & IG Terminal Of Steering Angle Sensor Connector
      GTY155274Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard resistance

      Tester connection Condition Specified value
      S10-2 (ESS) - Body ground Always Below 1 Ω
    2. Measure the voltage according to the value in the table below.

      Standard voltage

      Tester connection Condition Specified value
      S10-1 (IG) - Body ground Ignition switch on 10 to 14 V
      NOTE:

      Perform the measurement from the back of the connector with the connector connected.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   3 

  3. REPLACE STEERING ANGLE SENSOR. Refer to  REMOVAL