LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2013 >> Matrix Base, Automatic Trans >> Repair and Diagnosis >> Steering >> Power Steering >> Power Steering System (Diagnostic Codes & Circuit Tests) >> Power Steering System >> DTC C1582: Assist Map Number Mismatch >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC C1582: Assist Map Number Mismatch: Procedure

  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) 
    1. Using the Techstream, check for DTCs and confirm that there are no problems in the CAN communication system. Refer to DIAGNOSIS SYSTEM .

      OK

      DTC is not output.

    NG → See step   5 

    OK: Go to next step 

  2. CHECK ECM 
    1. Check if an ECM that complies with the vehicle specifications is installed.

      OK

      The ECM that complies with vehicle specifications is installed.

      RESULT

      Result Proceed to
      OK A
      NG (for 2ZR-FE) B
      NG (for 2AZ-FE) C

    B → See step   6 

    C → See step   7 

    A: Go to next step 

  3. CHECK SKID CONTROL ECU 
    1. Check if a skid control ECU (brake actuator assembly) that complies with the vehicle specifications is installed.

      OK

      The skid control ECU (brake actuator assembly) that complies with vehicle specifications is installed.

    NG → See step   8 

    OK → See step   4 

  4. REPLACE POWER STEERING ECU. Refer to  REMOVAL 
  5. GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 
  6. REPLACE ECM. Refer to  REMOVAL 
  7. REPLACE ECM. Refer to  REMOVAL 
  8. REPLACE BRAKE ACTUATOR ASSEMBLY. Refer to  REMOVAL