LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2015 >> Prius Three >> Repair and Diagnosis (Single Page) >> Restraints >> Restraints Control Systems >> Pre-Collision System - (Diagnostic Codes & Circuit Tests) (Except Plug-In) >> Pre-Collision System >> DTC C1A47: Steering Angle Sensor [08/2014 - ] >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC C1A47: Steering Angle Sensor [08/2014 - ]: Procedure

  1. CHECK DTC OUTPUT (ELECTRONICALLY CONTROLLED BRAKE SYSTEM) 
    1. Check DTCs for the electronically controlled brake system. Refer to DTC CHECK / CLEAR [08/2014 - ] .

      OK

      Electronically controlled brake system DTC is not output.

    NG → See step   4 

    OK: Go to next step 

  2. REPLACE BRAKE BOOSTER WITH MASTER CYLINDER 
    1. Replace the brake booster with master cylinder (skid control ECU). Refer to REMOVAL [08/2014 - ] .

    NEXT: Go to next step 

  3. CHECK DTC OUTPUT (PRE-COLLISION SYSTEM) 
    1. Using the Techstream, enter the following menus: Body Electrical / Pre-Collision 2 / Trouble Codes.
    2. Clear the DTCs. Refer to DTC CHECK / CLEAR [08/2014 - ] .
    3. Drive the vehicle.
    4. Recheck for DTCs.

      OK

      DTC C1A47 is not output.

    NG → See step   5 

    OK → See step   6 

  4. GO TO ELECTRONICALLY CONTROLLED BRAKE SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [08/2014 - ] 
  5. REPLACE DRIVING SUPPORT ECU. Refer to  REMOVAL [08/2014 - ] 
  6. CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [08/2014 - ]