2007 Toyota Corolla LE, AutomaticFACTORY OEM SERVICE PROCEDURE

Engine Control System (1ZZ-FE): ECM: Removal

  1. DISCONNECT BATTERY NEGATIVE TERMINAL 
  2. REMOVE GLOVE COMPARTMENT DOOR ASSEMBLY 
    1. Remove the screw [A] from the glove compartment door stoppers.
    2. Deform the upper part of the glove compartment door assembly to release the stoppers [B].
    3. Pull the glove compartment door assembly upward to remove it.
    Fig 1: Locating Glove Compartment Door Assembly Stoppers
    G05192731Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
  3. REMOVE ECM 
    1. Remove the 2 clips using a clip remover, then open the cover.
      Fig 2: Removing Cover
      G05192732Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
    2. Disconnect the 4 ECM connectors [B].
    3. Remove the wire harness from the wire harness clamp [C].
      Fig 3: Locating ECM Connectors
      G05192733Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
    4. Remove the 2 screws [D].
    5. Unfasten the claw and clip, and then remove the ECM.
      Fig 4: Locating ECM Screws, Claw And Clip
      G05192734Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
  4. REMOVE ECM COVER 
    1. Remove the ECM cover from the ECM.
      Fig 5: Identifying Denso And Delco Made ECM Cover
      G05192735Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
  5. REMOVE ECM BRACKET NO. 1 (for DELCO Made) 
    1. Remove the 4 screws, then remove the ECM bracket No. 1.
    Fig 6: Locating ECM Bracket No. 1 Screws (DELCO Made)
    G05192736Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
  6. REMOVE ECM BRACKET NO. 1 (for DENSO Made) 
    1. Remove the 2 screws, then remove the ECM bracket No. 1.
    Fig 7: Locating ECM Bracket No. 1 Screws (DENSO Made)
    G05192737Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
  7. REMOVE ECM BRACKET NO. 2 (for DENSO Made) 
    1. Remove the 2 screws, then remove the ECM bracket No. 2.
    Fig 8: Locating ECM Bracket No. 2 Screws (Denso Made)
    G05192738Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
  8. REMOVE ECM BRACKET NO. 3 (for DENSO Made) 
    1. Remove the 2 screws, then remove the ECM bracket No. 3.
    Fig 9: Locating ECM Bracket No. 3 Screws (Denso Made)
    G05192739Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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