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 MANUALSSCION2007TC BASE, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)GENERAL INFORMATIONCOMPUTER RELEARNENGINE CONTROL SYSTEM (2AZ-FE)KNOCK SENSORINSPECTION

2007 Scion tC Base, Automatic

Knock Sensor: Inspection

2007 Scion tC Base, AutomaticSECTION Inspection

INSPECT KNOCK SENSOR

Measure the resistance of the sensor.

Standard resistance

KNOCK SENSOR TESTER CONNECTION AND SPECIFIED CONDITION

Tester Connection	Specified Condition
1 (Ground) - 2 (Output)	120 to 280 kΩ at 20°C (68°F)

If the result is not as specified, replace the knock sensor.

Fig 1: Measuring Resistance Of Knock Sensor

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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.