LEMON Manuals: Even more car manuals for everyone
Home >> Scion >> 2014 >> FR-S Standard Trans >> Repair and Diagnosis (Single Page) >> Steering >> Electronic Steering >> Power Steering System (Diagnostic Codes & Circuit Tests) >> Power Steering System >> DTC C1521: Motor Circuit Malfunction; DTC C1531: ECU Malfunction; DTC C1532: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction; DTC C1554: Power Supply Relay Failure >> Procedure

DTC C1521: Motor Circuit Malfunction; DTC C1531: ECU Malfunction; DTC C1532: ECU Malfunction; DTC C1533: ECU Malfunction; DTC C1534: ECU Malfunction; DTC C1554: Power Supply Relay Failure: Procedure

  1. CHECK FOR DTC 
    1. Clear the DTC(s). Refer to DTC CHECK / CLEAR [07/2013 - ] .
    2. Check for DTCs. Refer to DTC CHECK / CLEAR [07/2013 - ] .
      RESULT

      Result Proceed to
      DTC is not output. A
      DTC is output. B

    B → See step   3 

    A → See step   2 

  2. USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [07/2013 - 12/2013] 
  3. REPLACE POWER STEERING ECU ASSEMBLY. Refer to  REMOVAL [07/2013 - ]