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Engine Control System - Service Information & Circuit Tests: ECM: Removal

  1. REMOVE COWL TOP VENTILATOR LOUVER RH  (See REMOVAL )
  2. 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.
    NOTE: After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal.
  3. REMOVE AIR CLEANER INLET COVER (See  REMOVAL   ) 
  4. REMOVE ENGINE ROOM SIDE COVER LH  (See REMOVAL )
  5. REMOVE ENGINE ROOM ECU COVER 
    NOTE:
    • Wipe off any water on or around the engine room ECU cover.
    • Perform these procedures in a dry place away from rain, etc.
    • Do not allow water to enter the ECM through its connectors areas, screw areas, etc.
    1. Remove the 3 bolts and engine room ECU cover.
      Fig 1: Locating Engine Room ECU Cover Bolts
      G04943041Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. REMOVE TCM 
    1. Disconnect the 4 TCM connectors.
    2. Remove the 2 nuts and TCM.
      Fig 2: Locating TCM Connectors And Nuts
      G04943042Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. REMOVE ECM 
    1. Disconnect the 6 ECM connectors.
    2. Remove the 2 nuts and ECM.
      Fig 3: Locating ECM Connectors And Nuts
      G04943043Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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