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Home >> Toyota >> 2018 >> Highlander LE Plus, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 6 (SFI System [2GR-FE] - Diagnostic Codes - (Except Hybrid) (2 Of 5)) >> SFI System >> DTC P0604: Random Access Memory (RAM) [12/2013 - 11/2016] >> Procedure

DTC P0604: Random Access Memory (RAM) [12/2013 - 11/2016]: Procedure

WARNING: This page is about a different car, the 2016 Toyota Highlander, 2015 Toyota Highlander, and 2014 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
  1. READ OUTPUT DTC (DTC P0604) 
    1. Connect the Techstream to the DLC3.
    2. Turn the ignition switch to ON.
    3. Turn the Techstream on.
    4. Clear the DTCs.

      Refer to DTC CHECK / CLEAR [12/2013 - 11/2016]

      Powertrain > Engine > Clear DTCs 

    5. Turn the Techstream off.
    6. Turn the ignition switch off.
    7. Disconnect the Techstream.
    8. Disconnect the cable from the negative (-) battery terminal and wait for 1 minute.
    9. Connect the cable to the negative (-) battery terminal.
    10. Connect the Techstream to the DLC3.
    11. Turn the ignition switch to ON.
    12. Turn the Techstream on.
    13. Wait for 16 seconds or more.
    14. Enter the following menus: Powertrain / Engine / Trouble Codes.
    15. Read the DTCs.

      Powertrain > Engine > Trouble Codes 

      Result

      Result Proceed to
      DTCs are not output A
      DTC P0604 is output B

    Result:  1

    A 

    CHECK FOR INTERMITTENT PROBLEMS. Refer to  CHECK FOR INTERMITTENT PROBLEMS [12/2013 - 11/2016] 

    Result:  2

    B 

    REPLACE ECM. Refer to  REMOVAL [12/2013 - 11/2016] 

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