Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 709 (ECM (3MZ-FE))REPLACEMENT
2004 Toyota Matrix XR, FWD, Standard
Section 709 (ECM (3MZ-FE)): Replacement
2004 Toyota Matrix XR, FWD, StandardSECTION Replacement
WARNING: This page is about a different car, the 2004 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.
- DISCONNECT BATTERY NEGATIVE TERMINAL
- REMOVE FRONT DOOR SCUFF PLATE RH (See REPLACEMENT )
- REMOVE COWL SIDE TRIM SUB-ASSY RH (See REPLACEMENT )
- REMOVE INSTRUMENT PANEL UNDER COVER SUB-ASSY NO. 1 (See REPLACEMENT )
- REMOVE INSTRUMENT PANEL FINISH LOWER PANEL RH (See REPLACEMENT )
- REMOVE ECM
- Remove the 2 wire harness clamps.
- Disconnect the 5 ECM connectors.
- Remove the 2 nuts and ECM.
- REMOVE ECM BRACKET
- Remove the 2 screws and ECM bracket.
- REMOVE ECM BRACKET NO. 2
- Remove the 2 screws and ECM bracket.
- INSTALL ECM BRACKET NO. 2
- Install the ECM bracket with the 2 screws.
- INSTALL ECM BRACKET
- Install the ECM bracket with the 2 screws.
- INSTALL ECM
- Install the 2 wire harness clamps.
- Connect the 5 ECM connectors.
- Install the ECM with the 2 nuts.
Torque: 5.5 N.m (56 kgf.cm, 49 in.lbf)
- INSTALL INSTRUMENT PANEL FINISH LOWER PANEL RH (See REPLACEMENT )
- INSTALL INSTRUMENT PANEL UNDER COVER SUB-ASSY NO. 1 (See REPLACEMENT )
- INSTALL COWL SIDE TRIM SUB-ASSY RH (See REPLACEMENT )
- INSTALL FRONT DOOR SCUFF PLATE RH (See REPLACEMENT )
- CONNECT BATTERY NEGATIVE TERMINAL
- INITIALIZE SYSTEM (See INITIALIZATION )
RENDER: 1.0x
NO RELATED
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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.