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.
2003 Toyota Matrix Base, 4WDFACTORY OEM SERVICE PROCEDURE
Torque Specification
1ZZ-FE:
TORQUE SPECIFICATION
| Part Tightened | N.m | Kgf.cm | Ft.Lbs |
|---|---|---|---|
| Throttle Body Idle Speed Control Valve Assy At Throttle Body Assy | 3.7 | 38 | 33 In.Lbs |
| E.F.I. Throttle Position Sensor At Throttle Body Assy | 2.0 | 20 | 18 In.Lbs |
| Accelerator Control Cable Bracket Sub-Assy At Throttle Body Assy | 13 | 133 | 9.6 |
| Throttle Body Assy At Intake Manifold | 30 | 306 | 22 |
| Throttle Body Bracket At Cylinder Head Sub-Assy | 30 | 306 | 22 |
| Manifold Stay No. 2 At Throttle Body Assy M/T | 13 | 133 | 9.6 |
| Cylinder Head Cover No. 2 At Cylinder Head Cover Sub-Assy | 7.0 | 71 | 62 In.Lbs |
2ZZ-GE:
TORQUE SPECIFICATION - ENGINE CONTROL SYSTEM (2ZZ-GE)
| Part Tightened | N.m | Kgf.cm | In.Lbs |
|---|---|---|---|
| Throttle Body Idle Speed Control Valve Assy At Throttle Body Assy | 3.7 | 38 | 33 |
| E.F.I. Throttle Position Sensor At Throttle Body Assy | 2.0 | 20 | 18 |
| Throttle Body Assy At Intake Manifold | 22 | 224 | 16 Ft.Lbs |
| Cylinder Head Cover No. 2 At Cylinder Head Cover Sub-Assy | 7.0 | 71 | 62 |
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.
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