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Engine Control System: ECM: Replacement

  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
  2. REMOVE ENGINE ROOM ECU COVER 
    NOTE:
    • Wipe water from the ECM cover and edges.
    • Replacement of the ECM should be performed indoors, away from rain.
    • Keep the inside of the ECM and its connectors/screws away from water.
    1. Remove the 3 bolts and ECM cover.
  3. REMOVE ECM 
    1. Disconnect the 5 ECM connectors.
    2. Remove the 2 nuts and ECM.
  4. INSTALL ECM 
    NOTE:
    • After replacing the ECM, initialize it (see INITIALIZATION ).
    • Check that no foreign objects are stuck inside the ECM box.
    1. Connect the connector and install the ECM with the 2 nuts.

      Torque: 5.5 N.m (56 kgf.cm, 49 in.lbf) 

  5. INSTALL ENGINE ROOM ECU COVER 
    1. Install the ECM cover with the 3 bolts.
  6. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
  7. PERFORM INITIALIZATION (See  INITIALIZATION  ) 
    NOTE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.
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