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: KNOCK SENSOR: INSTALLATION
1. INSTALL KNOCK SENSOR
(a) Install the knock sensor with the nut.
Torque : 20 Nm (204 kgf-cm, 15 ft-lbf)
(b) Connect the sensor connector.
2. INSTALL NO. 1 INTAKE MANIFOLD INSULATOR
(a) Install the No. 1 intake manifold insulator.
3. INSTALL INTAKE MANIFOLD
(a) Install a new gasket to the intake manifold.
(b) Install the intake manifold with the 5 bolts and 2 nuts, and connect the wire harness clamp.
Torque : 30 Nm (306 kgf-cm, 22 ft-lbf)
(c) Connect the union to check valve hose.
(d) Connect the ventilation hose.
4. INSTALL FUEL DELIVERY PIPE SUB-ASSEMBLY WITH FUEL TUBE SUB-ASSEMBLY Installation
5. CONNECT FUEL TUBE SUB-ASSEMBLY Installation
6. INSTALL THROTTLE BODY ASSEMBLY Installation
7. INSTALL SUSPENSION TOWER DAMPER ASSEMBLY (w/ Front Strut Bar) Installation
8. INSTALL OUTER COWL TOP PANEL Installation
9. INSTALL WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY Installation
10. INSTALL COWL TOP VENTILATOR LOUVER LH Installation
11. INSTALL COWL TOP VENTILATOR LOUVER RH Installation
12. INSTALL HOOD TO COWL TOP SEAL Installation
13. INSTALL FRONT WIPER ARM AND BLADE ASSEMBLY RH Installation
14. INSTALL FRONT WIPER ARM AND BLADE ASSEMBLY LH Installation
15. INSTALL FRONT WIPER ARM HEAD CAP Installation
16. INSTALL AIR CLEANER CAP SUB-ASSEMBLY WITH HOSE Installation
17. ADD ENGINE COOLANT Service and Repair
18. INSPECT FOR COOLANT LEAK Testing and Inspection
19. INSPECT FOR FUEL LEAK Fuel System
20. 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.