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Steering Angle Sensor Communication Stop Mode [09/2014 - 10/2015]: Procedure

  1. CHECK FOR OPEN IN CAN BUS WIRE (STEERING ANGLE SENSOR CAN BRANCH WIRE) 
    1. Disconnect the cable from the negative (-) battery terminal.
      GTY626734Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the spiral with sensor cable sub-assembly (steering angle sensor) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      W/ VARIABLE GEAR RATIO STEERING SYSTEM

      Tester Connection Condition Specified Condition
      N33-3 (CANH) - N33-2 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω
      W/O VARIABLE GEAR RATIO STEERING SYSTEM

      Tester Connection Condition Specified Condition
      N34-3 (CANH) - N34-2 (CANL) Cable disconnected from negative (-) battery terminal 54 to 69 Ω
      TEXT IN ILLUSTRATION

      *A w/ Variable Gear Ratio Steering System
      *B w/o Variable Gear Ratio Steering System
      *a Rear view of wire harness connector
      (to Spiral with Sensor Cable Sub-assembly [Steering Angle Sensor])

    Result: 

    NG 

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

    Result: 

    OK 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (STEERING ANGLE SENSOR - BATTERY AND BODY GROUND) 
    1. Connect the cable to the negative (-) battery terminal.
      GTY631024Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      When connecting the cable, some systems need to be initialized after the cable is reconnected (Refer to INITIALIZATION [09/2014 - 10/2015] ).

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      W/ VARIABLE GEAR RATIO STEERING SYSTEM

      Tester Connection Condition Specified Condition
      N33-5 (BAT) - Body ground Always 11 to 14 V
      N33-4 (IG1) - Body ground Engine switch on (IG) 11 to 14 V
      W/O VARIABLE GEAR RATIO STEERING SYSTEM

      Tester Connection Condition Specified Condition
      N34-8 (BAT) - Body ground Always 11 to 14 V
      N34-4 (IG1) - Body ground Engine switch on (IG) 11 to 14 V
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      W/ VARIABLE GEAR RATIO STEERING SYSTEM

      Tester Connection Condition Specified Condition
      N33-1 (ESS) - Body ground Always Below 1 Ω
      W/O VARIABLE GEAR RATIO STEERING SYSTEM

      Tester Connection Condition Specified Condition
      N34-1 (ESS) - Body ground Always Below 1 Ω
      TEXT IN ILLUSTRATION

      *A w/ Variable Gear Ratio Steering System
      *B w/o Variable Gear Ratio Steering System
      *a Rear view of wire harness connector
      (to Spiral with Sensor Cable Sub-assembly [Steering Angle Sensor])

    Result: 

    OK 

    REPLACE SPIRAL WITH SENSOR CABLE SUB-ASSEMBLY (STEERING ANGLE SENSOR) 

    (Refer to REMOVAL [09/2014 - 10/2015] )

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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