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.

2002 Mazda B2300 StandardFACTORY OEM SERVICE PROCEDURE

Knock Sensor

KNOCK SENSOR (KS) RESISTANCE

Temperature - °F (°C)

⁽¹⁾ Ohms

Miata, Millenia, MPV & 626

68 (20)

560K

Protege & Protege5

68 (20)

532-588K

B2300, B3000, B4000 & Tribute

68 (20)

4390-5350K

⁽¹⁾	Measure resistance between terminal "A" (White wire on Miata, Millenia 2.3L and 626) and KS body. On all models except Miata, Millenia and 626, measure resistance between KS terminals. On Millenia 2.5L, measure between KS terminal and body.

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.