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 MANUALSMAZDA20133 MAZDASPEED, 2.3L ENG VIN 3REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 24 (ENGINE CONTROL SYSTEM [MZR 2.0, MZR 2.5])CAMSHAFT POSITION (CMP) SENSOR INSPECTIONVISUAL INSPECTION
2013 Mazda 3 Mazdaspeed, 2.3L Eng VIN 3
Visual Inspection
2013 Mazda 3 Mazdaspeed, 2.3L Eng VIN 3SECTION Visual Inspection
WARNING: This page is about a different variant/trim than selected.
CAUTION:
- When replacing the CMP sensor, make sure there is no foreign material on it such as metal shavings. If it is installed with foreign material, the sensor output signal will malfunction resulting from fluctuation in magnetic flux and cause a deterioration in engine control.
- Remove the battery cover. (See BATTERY REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5] .)
- Disconnect the negative battery cable. (See BATTERY REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5] .)
- Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION .)
- Disconnect the CMP sensor connector.
- Remove the CMP sensor. (See CAMSHAFT POSITION (CMP) SENSOR REMOVAL/INSTALLATION .)
- Verify that there are no metal shavings on the CMP sensor.
- Remove any metal shavings that are adhering.
RENDER: 1.0x
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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.