Section 175 (Engine Control System - System & Component Testing, R & I): ECM: Removal

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See INITIALIZATION ).
REMOVE COOL AIR INTAKE DUCT SEAL (See REMOVAL )
REMOVE ENGINE ROOM SIDE COVER LH (See REMOVAL )
REMOVE V-BANK COVER SUB-ASSEMBLY (See REMOVAL )
REMOVE ENGINE ROOM ECU COVER
1. Remove the 3 bolts and the ECM cover
  NOTE:
  - Remove all water from on and around the ECM cover.
  - Perform the inspection indoors to avoid rain.
  - Be sure to prevent water intrusion to the ECM (connectors and screw holes).
    
    Fig 1: Locating ECM Cover Bolts
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE ECM
1. Disconnect the ECM connectors.
  1. Using a screwdriver, disconnect the connector holder.
  2. Disconnect the 6 ECM connectors
    
    Fig 2: Disconnecting Connector Holder
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Remove the 2 nuts and ECM from the ECM box.
  
  Fig 3: Locating ECM Nuts
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002