Section 17 (Engine Control System): ECM: Removal

WARNING: This page is about a different car, the 2007 Lexus SC 430. 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 prevent airbag and seat belt pretensioner activation.
REMOVE ECM BOX COVER
1. Remove the 3 bolts and ECM box cover.
  NOTE:
  - Make sure there is no water and / or foreign matter around the ECM box cover.
  - Perform the inspection indoors to avoid rain.
  - Prevent water from contacting the ECM's connectors and screw areas.
    
    Fig 1: Locating ECM Box Cover With Bolts
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
REMOVE ECM
1. Disconnect the 5 ECM connectors.
2. Remove the 2 nuts and ECM from the ECM box.
  
  Fig 2: Locating ECM Box With Nuts
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002