2008 Lexus SC 430FACTORY OEM SERVICE PROCEDURE

Section 17 (Engine Control System): ECM: Installation

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.
  1. INSTALL ECM 
    1. Insert the ECM into the ECM box.
    2. Install the ECM to the ECM box with the 2 nuts.

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

    3. Connect the 5 ECM connectors.
      Fig 1: Locating ECM Box With Nuts
      G05291623Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSTALL ECM BOX COVER 
    1. Install the ECM box cover with the 3 bolts.
      Fig 2: Locating ECM Box Cover With Bolts
      G05291624Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Torque: 5.0 N*m (51 kgf*cm, 44 in.*lbf) 

  3. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
  4. PERFORM INITIALIZATION 
    1. Perform initialization (see INITIALIZATION ).
      NOTE: Certain systems need to be initialized after disconnecting and reconnecting the cable from the negative (-) battery terminal.
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

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.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.