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 MANUALSMAZDA20113 MAZDASPEED, 2.3 3REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 64 (ENGINE CONTROLS [SENSOR OPERATING RANGE CHARTS])INTRODUCTIONCRANKSHAFT POSITION SENSOR

2011 Mazda 3 Mazdaspeed, 2.3 3

Crankshaft Position Sensor

2011 Mazda 3 Mazdaspeed, 2.3 3SECTION Crankshaft Position Sensor

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2003 Mazda Tribute, 2003 Mazda Protege5, 2003 Mazda Protege, 2003 Mazda MX-5 Miata, and 2003 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.

CRANKSHAFT POSITION (CKP) SENSOR RESISTANCE

Application

⁽¹⁾ Ohms

B2300, B3000 & B4000 ⁽¹⁾

300-800

Mazda6

2.3L

400-550

3.0L

315-385

Miata

⁽²⁾

MPV ⁽³⁾

315-385

Protege ⁽⁴⁾

⁽⁵⁾ 550

Tribute ⁽⁶⁾

300-800

⁽¹⁾	Measure resistance between PCM test pin 21 (CKP +) and PCM test pin 22 (CKP -). See Fig 1 .

⁽²⁾	No information available from manufacturer.

⁽³⁾	CKP and CMP terminals are the same. See Figure .

⁽⁴⁾	Measure resistance between sensor terminals "A" and "B". See Fig 4 .

⁽⁵⁾	Specification given is approximate.

⁽⁶⁾	Measure resistance between PCM test pin 21 (CKP +) and PCM test pin 22 (CKP -). See Fig 5 .

Fig 1: Identifying CKP Sensor Terminals (B2300, B3000 & B4000)

Courtesy of MAZDA MOTORS CORP.

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.