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 MANUALSMAZDA2001626 ES V6-2.5L DOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCRANKSHAFT POSITION SENSORTESTING AND INSPECTION
2001 Mazda 626 ES V6-2.5L DOHC
Crankshaft Position Sensor: Testing and Inspection
2001 Mazda 626 ES V6-2.5L DOHCSECTION Testing and Inspection
Inspection of Resistance
1. Disconnect the battery negative cable.
2. Disconnect the crankshaft position sensor connector.
3. Measure the resistance between terminals A and B by using an ohmmeter.
- If not as specified, check related wiring harness. If they are okay, replace the crankshaft position sensor.
Specification: Approx. 550 ohms
Inspection of Air Gap
1. Verify that the crankshaft position sensor is installed correctly and securely.
2. Measure the air gap between the crankshaft pulley teeth and the crankshaft position sensor by using a feeler gauge.
- If not as specified, replace the crankshaft pulley or the crankshaft position sensor.
Specification: 0.5 - 1.5 mm {0.020 - 0.059 in}
1. Disconnect the battery negative cable.
2. Disconnect the crankshaft position sensor connector.
3. Measure the resistance between terminals A and B by using an ohmmeter.
- If not as specified, check related wiring harness. If they are okay, replace the crankshaft position sensor.
Specification: Approx. 550 ohms
Inspection of Air Gap
1. Verify that the crankshaft position sensor is installed correctly and securely.
2. Measure the air gap between the crankshaft pulley teeth and the crankshaft position sensor by using a feeler gauge.
- If not as specified, replace the crankshaft pulley or the crankshaft position sensor.
Specification: 0.5 - 1.5 mm {0.020 - 0.059 in}
RENDER: 1.0x
NO RELATED
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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.