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.
2012 Toyota Matrix FWD L4-2.4L (2AZ-FE)FACTORY OEM SERVICE PROCEDURE
Installation
2AZ-FE ENGINE CONTROL: IGNITION COIL AND SPARK PLUG: INSTALLATION
1. INSTALL SPARK PLUG
(a) Install the 4 spark plugs.
Torque : 19 Nm (194 kgf-cm, 14 ft-lbf)
2. INSTALL IGNITION COIL ASSEMBLY
(a) Install the 4 ignition coils with the 4 bolts.
Torque : 9.0 Nm (92 kgf-cm, 80 in-lbf)
(b) Connect the 4 ignition coil connectors.
3. INSTALL NO. 1 ENGINE COVER SUB-ASSEMBLY Installation
Factory Service Tools
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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.