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.
ECM (1ZZ-FE/2ZZ-GE) Replacement
- DISCONNECT BATTERY NEGATIVE TERMINAL
- REMOVE GLOVE COMPARTMENT DOOR ASSY
- Remove the screw from the glove compartment door stoppers.
- Deform the upper part of the glove compartment door assy to release the stoppers.
- Pull the glove compartment door assy upward to remove it.
- REMOVE ECM
- Remove the 2 clips using a clip remover, then open the cover.
- Disconnect the 4 ECM connectors.
- Remove the wire harness from the wire harness clamp.
- Remove the 2 screws.
- Unfasten the claw and clip, then remove the ECM.
- REMOVE ECM COVER
- Remove the ECM cover from the ECM.
- REMOVE ECM BRACKET (DELCO MADE)
- Remove the 4 screws, then remove the ECM bracket.
- REMOVE ECM BRACKET (DENSO MADE)
- Remove the 2 screws, then remove the ECM bracket.
- REMOVE ECM BRACKET NO. 2 (DENSO MADE)
- Remove the 2 screws, then remove the ECM bracket No. 2.
- REMOVE ECM BRACKET NO. 3 (DENSO MADE)
- Remove the 2 screws, then remove the ECM bracket No. 3.
- INSTALL ECM BRACKET NO.3 (DENSO MADE)
- Install the ECM bracket No. 3 with the 2 screws.
Torque: 3.2 N.m (33 kgf.cm, 28 in..lbf)
- Install the ECM bracket No. 3 with the 2 screws.
- INSTALL ECM BRACKET NO.2 (DENSO MADE)
- Install the ECM bracket No. 2 with the 2 screws.
Torque: 3.2 N.m (33 kgf.cm, 28 in..lbf)
- Install the ECM bracket No. 2 with the 2 screws.
- INSTALL ECM BRACKET (DENSO MADE)
- Install the ECM bracket with the 2 screws.
Torque: 3.2 N.m (33 kgf.cm, 28 in..lbf)
- Install the ECM bracket with the 2 screws.
- INSTALL ECM BRACKET (DELCO MADE)
- Install the ECM bracket with the 4 screws.
Torque: 3.2 N.m (33 kgf.cm, 28 in..lbf)
- Install the ECM bracket with the 4 screws.
- INSTALL ECM COVER
- Install a new ECM cover onto the ECM as shown in the illustration.
- INSTALL ECM
- Install the ECM with the 2 screws.
Torque: 3.0 N.m (31 kgf.cm, 27 in..lbf)
- Connect the 4 ECM connectors.
- Install the wire harness clamp.
- Install the cover with the 2 clips.
- Install the ECM with the 2 screws.
- INSTALL GLOVE COMPARTMENT DOOR ASSY
- CONNECT BATTERY NEGATIVE TERMINAL
Torque: 5.4 N.m (55 kgf.cm, 48 in..lbf)
- REGISTRATION VIN
HINT:
- 1ZZ-FE (See REGISTRATION )
- 2ZZ-GE (See REGISTRATION )
Use the Manual With the Right Hardware
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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.
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