SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSLEXUS2005ES 330REPAIR AND DIAGNOSISENGINE PERFORMANCEREMOVE, OVERHAUL & INSTALLENGINE CONTROL SYSTEMECM (3MZ-FE)REPLACEMENT
2005 Lexus ES 330

ECM (3MZ-FE): Replacement

2005 Lexus ES 330SECTION Replacement
  1. DISCONNECT ENGINE WIRE NO. 3 (BATTERY NEGATIVE TERMINAL) 
  2. REMOVE FRONT DOOR SCUFF PLATE RH (See  REPLACEMENT  ) 
  3. REMOVE INSTRUMENT PANEL UNDER COVER SUB-ASSY NO.1 (See  REPLACEMENT  ) 
  4. REMOVE INSTRUMENT PANEL SUB-ASSY LOWER (See  REPLACEMENT  ) 
  5. REMOVE STEREO COMPONENT AMPLIFIER ASSY 
    1. Disconnect the 3 stereo component amplifier connectors.
    2. Remove the 2 nuts, then remove the stereo component amplifier.
    Fig 1: Removing Stereo Component Amplifier Assembly
    G02939017Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. REMOVE ECM 
    1. Remove the wire harness clamp.
    2. Disconnect the 5 ECM connectors.
    3. Remove the 2 nuts, then remove the ECM.
    Fig 2: Removing ECM
    G02939018Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. REMOVE ECM BRACKET 
    1. Remove the 2 screws, then remove the ECM bracket.
    Fig 3: Removing ECM Bracket
    G02939019Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. REMOVE ECM BRACKET NO.2 
    1. Remove the 2 screws, then remove the ECM bracket No. 2.
    Fig 4: Removing ECM Bracket No-2
    G02939020Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. REMOVE ECM BRACKET NO.3 
    1. Remove the 2 screws, then remove the ECM bracket No 3.
    Fig 5: Removing ECM Bracket No-3
    G02939021Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. INSTALL ECM BRACKET NO.3 
  11. INSTALL ECM BRACKET NO.2 
  12. INSTALL ECM BRACKET 
  13. INSTALL ECM 
    1. Torque: 5.5 N.m (56 kgf.cm, 49 in..lbf) 
  14. INSTALL STEREO COMPONENT AMPLIFIER ASSY 
    1. Torque: 5.5 N.m (56 kgf.cm, 49 in..lbf) 
  15. INSTALL INSTRUMENT PANEL SUB-ASSY LOWER 
  16. INSTALL INSTRUMENT PANEL UNDER COVER SUB-ASSY NO.1 
  17. INSTALL FRONT DOOR SCUFF PLATE RH 
  18. CONNECT ENGINE WIRE NO. 3 (BATTERY NEGATIVE TERMINAL) 
    1. Torque: 5.4 N.m (55 kgf.cm, 48 in..lbf) 
  19. RESET MEMORY (See  INITIALIZATION  ) 
  20. SYSTEM INITIALIZATION (See  CHARGING SYSTEM (3MZ-FE)  )> 
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

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

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

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.