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Steering Angle Sensor Communication Stop Mode: Procedure

  1. CHECK FOR OPEN IN CAN BUS WIRE (STEERING SENSOR BRANCH WIRE) 
    1. Turn the ignition switch off.
      Fig 1: Identifying D20 Spiral Cable Sub-Assembly (Steering Sensor) Connector Terminals
      GTY345463Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the D20 spiral cable sub-assembly (steering sensor) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      D20-4 (CANH) - D20-3 (CANL) Ignition switch off 54 to 69 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Spiral Cable Sub-Assembly (Steering Sensor))
    4. Reconnect the spiral cable sub-assembly (steering sensor) connector.

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

    OK: Go to next step 

  2. CHECK HARNESS AND CONNECTOR (STEERING SENSOR - BATTERY AND BODY GROUND) 
    1. Disconnect the D20 spiral cable sub-assembly (steering sensor) connector.
      Fig 2: Identifying D20 Spiral Cable Sub-Assembly (Steering Sensor) Connector Terminals
      GTY345462Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D20-2 (ESS) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      D20-5 (IG) - Body ground Ignition switch ON 11 to 14 V
      D20-6 (BAT) - Body ground Always 11 to 14 V
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Spiral Cable Sub-Assembly (Steering Sensor))
    4. Reconnect the spiral cable sub-assembly (steering sensor) connector.

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   3 

  3. REPLACE SPIRAL CABLE SUB-ASSEMBLY. Refer to  REMOVAL