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 13 (ENGINE CONTROLS - BASIC DIAGNOSTIC PROCEDURES - 4-CYLINDER)IGNITION SYSTEMSCRANKSHAFT POSITION SENSORMR2
2004 Toyota Matrix XR, FWD, Standard
Crankshaft Position Sensor: MR2
2004 Toyota Matrix XR, FWD, StandardSECTION MR2
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2002 Toyota Tacoma, 2002 Toyota RAV4, 2002 Toyota Prius, 2002 Toyota MR2, and 2002 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
- Remove lower front engine cover. Remove A/C compressor for access to crankshaft position sensor. It may be necessary to discharge A/C system for removal of A/C compressor. Crankshaft position sensor is located on front of timing chain cover, near crankshaft pulley. See Figure.
- Disconnect crankshaft position sensor electrical connector. Using ohmmeter, check resistance between electrical terminals on crankshaft position sensor electrical connector. Ensure crankshaft position sensor resistance is within specification. See CRANKSHAFT POSITION SENSOR RESISTANCE table. Replace crankshaft position sensor if resistance is not within specification. See CRANKSHAFT POSITION SENSOR under IGNITION SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION - 4-CYLINDER article. Reinstall crankshaft position sensor electrical connector and A/C compressor. Tighten A/C compressor retaining bolts to 18 ft. lbs. (24 N.m). Install lower front engine cover.
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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.