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Steering Angle Sensor Communication Stop Mode: Procedure

  1. CHECK FOR OPEN IN CAN BUS WIRE (STEERING ANGLE SENSOR BRANCH WIRE) 
    1. Turn the engine switch off.
    2. Disconnect the steering angle sensor connector.
      Fig 1: Identifying Steering Angle Sensor Connector
      GTY269667Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Rear view of wire harness connector
      (to Steering Angle Sensor)
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Value
      J23-10 (CANH) - J23-9 (CANL) Engine switch off 54 to 69 Ω

    NG → REPAIR OR REPLACE STEERING ANGLE SENSOR BRANCH WIRE OR CONNECTOR (CANH, CANL) 

    OK: Go to next step 

  2. CHECK WIRE HARNESS (POWER SOURCE CIRCUIT) 
    1. Measure the resistance according to the value(s) in the table below.
      Fig 2: Identifying J23 Connector
      GTY285131Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Value
      J23-2 (ESS) - Body ground Always Below 1 Ω
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Value
      J23-1 (IG) - Body ground Engine switch on (IG) 11 to 14 V
      TEXT IN ILLUSTRATION

      *1 Rear view of wire harness connector
      (to Steering Angle Sensor)

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

    OK → See step   3 

  3. REPLACE STEERING ANGLE SENSOR. Refer to  REMOVAL