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Home >> Toyota >> 2017 >> 4Runner TRD Pro >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Vehicle Stability Control System (For Vacuum Brake Booster) - Diagnostic Codes (B1380-U0074) & Symptom Tests >> VEHICLE STABILITY CONTROL SYSTEM (for Vacuum Brake Booster) >> DTC C1434: Steering Angle Sensor Output Malfunction [08/2015 - 08/2019] >> Procedure

DTC C1434: Steering Angle Sensor Output Malfunction [08/2015 - 08/2019]: Procedure

  1. CHECK DTC 
    1. Clear the DTCs (Refer to DTC CHECK / CLEAR [08/2015 - 08/2019] ).
    2. Turn the ignition switch off.
    3. Turn the ignition switch to ON again and check that no CAN communication system DTC is output (Refer to DTC CHECK / CLEAR [08/2015 - 08/2019] ).
    4. Start the engine.
    5. Drive the vehicle at a speed of 35 km/h (22 mph) and turn the steering wheel to the right and left, and then check that no speed sensor or yaw rate and acceleration sensor DTCs are output (Refer to DTC CHECK / CLEAR [08/2015 - 08/2019] ).
      RESULT

      Result Proceed to
      No CAN communication system, speed sensor, or yaw rate and acceleration sensor DTCs are output A
      CAN communication system DTC is output B
      Speed sensor or yaw rate and acceleration sensor DTC is output C

      HINT: 

      • If there is a malfunction in any of the speed sensors or the yaw rate and acceleration sensor, an abnormal value may be output although the steering angle sensor (spiral with sensor cable sub-assembly) sensor is normal.
      • If speed sensor and yaw rate and acceleration sensor DTCs are output simultaneously, repair these two sensors first and inspect the steering angle sensor (spiral with sensor cable sub-assembly).

    Result: 

    GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) 

    (Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2015 - 08/2019] )

    Result: 

    REPAIR CIRCUIT INDICATED BY OUTPUT DTC 

    (Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2015 - 08/2019] )

    Result: 

    See step  2

  2. CHECK TERMINAL VOLTAGE (BAT TERMINAL) 

    See step  1

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  3

  3. CHECK TERMINAL VOLTAGE (IG TERMINAL) 

    See step  2

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (ESS CIRCUIT) 

    See step  3

    Result: 

    OK 

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

    (Refer to REMOVAL [08/2015 - ] )

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR