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 MANUALSTOYOTA1997TERCEL 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM TESTS W/CODESCIRCUIT TESTSDTC P0325: KNOCK SENSOR CIRCUITCIRCUIT DESCRIPTION
1997 Toyota Tercel 4D Sedan, Automatic
Circuit Description
1997 Toyota Tercel 4D Sedan, AutomaticSECTION Circuit Description
Knock sensor is located on side of cylinder block. Sensor generates voltage when engine block vibrates due to knocking. DTC is set when there is no knock sensor signal to ECM with engine speed of 1200 RPM or more. Possible causes are:
- Open or short in knock sensor circuit.
- Knock sensor (loose).
- ECM.
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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.