DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (Except HV) - Diagnostic Codes (2 Of 3) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (for Gasoline Model) >> DTC C0526-2A: Steering Angle Sensor Module Signal Stuck In Range [12/2019 - 11/2023] >> Procedure

DTC C0526-2A: Steering Angle Sensor Module Signal Stuck In Range [12/2019 - 11/2023]: Procedure

  1. CLEAR DTC 
    1. Clear the DTCs.

      Chassis > Brake/EPB > Clear DTCs 

    2. Turn the ignition switch off.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  2

  2. RECONFIRM DTC 
    1. Turn the ignition switch to ON and check that no CAN communication system DTCs are output.

      Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 10/2022] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 11/2023]

    2. Drive the vehicle at a speed of 35 km/h (22 mph) and turn the steering wheel to the right and left.
    3. Check that no speed sensor and/or yaw rate sensor (airbag sensor assembly) DTCs are output.

      Chassis > Brake/EPB > Trouble Codes 

      Result

      Result Proceed to
      DTC C0526-2A is output. A
      CAN communication system DTCs are output. B
      Speed sensor and/or yaw rate sensor (airbag sensor assembly) DTCs are output. C

      HINT: 

      • If a speed sensor, or the yaw rate sensor (airbag sensor assembly) is malfunctioning, DTCs for the steering angle sensor may be stored even though the steering angle sensor is normal.
      • If speed sensor and/or yaw rate sensor (airbag sensor assembly) DTCs are output simultaneously, repair these malfunctions and then inspect the steering angle sensor.

    Result: 

    INSPECT CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - 10/2022]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2022 - 11/2023] 

    Result: 

    REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 10/2022]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2022 - 11/2023] 

    Result: 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (IG1 TERMINAL) 
    1. Turn the ignition switch off.
      GTY879598Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Steering Angle Sensor)
    2. Make sure that there is no looseness at the locking part and the connecting part of the connectors.

      OK

      The connector is securely connected.

    3. Disconnect the H57 steering angle sensor connector.
    4. Check both the connector case and the terminals for deformation and corrosion.

      OK

      No deformation or corrosion.

    5. Turn the ignition switch to ON.
    6. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      H57-9 (IG1) - Body ground Ignition switch ON 10.5 to 16 V*1
      11 to 14 V*2
      1. *1: w/ Stop and Start System
      2. *2: w/o Stop and Start System

      Result

      Result Proceed to
      OK A
      NG (w/ Stop and Start System) B
      NG (w/o Stop and Start System) C

    Result: 

    INSPECT STOP AND START SYSTEM (BACKUP BOOST CONVERTER CIRCUIT). Refer to  Backup Boost Converter Circuit [12/2019 - 10/2022]  , or refer to  Backup Boost Converter Circuit [10/2022 - 11/2023] 

    Result: 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (BAT TERMINAL) 
    1. Turn the ignition switch off.
      GTY879597Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Steering Angle Sensor)
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Condition Specified Condition
      H57-4 (BAT) - Body ground Always 11 to 14 V

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (ESS TERMINAL) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H57-6 (ESS) - Body ground 1 minute or more after disconnecting the cable from the negative (-) auxiliary battery terminal Below 1 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE STEERING ANGLE SENSOR. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR