Genuine Toyota Avalon Knock Sensor

Toyota Avalon Knock Sensor Parts Questions & Answers

• Knock Control Sensor
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  Q: What is the knock control system and how do you check and replace a knock sensor on Toyota Solara and 1997 through 2001 Toyota Avalon?

  A: The knock control system is designed to reduce spark knock by detecting abnormal engine vibration through a knock sensor, which produces a voltage output that is monitored by the PCM. The system retards ignition timing until the detonation ceases, allowing for optimal spark advance and improved driveability. To check a knock sensor, disconnect the electrical connector and use an ohmmeter to check for continuity between the knock sensor terminal and the body of the sensor. If continuity exists, replace the sensor. To replace the knock sensor, disconnect the battery cable, drain the cooling system, remove the intake manifold on V6 models, disconnect the electrical connector, and remove the sensor. When installing a new or reused sensor, ensure it is securely tightened (approximately 30 ft-lbs) and the threads are coated with thread sealant as necessary. Refill the cooling system and check for leaks.
• Knock Control Sensor
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  Q: How to replace the knock sensor in a Toyota Camry and 2007 through 2015 Toyota Avalon?

  A: To replace the knock sensor, begin by releasing the pressure from the fuel system and disconnecting the negative battery terminal. For four-cylinder models, remove the intake manifold and disconnect the electrical connector to access the knock sensor. Slide the sensor off the mounting stud, install the new sensor, and tighten the nut to 15 ft-lbs. As for the V6 engine models, remove the lower intake manifold. After that, unplug the knock sensor harness connector. Remove the sensors, clean the mounting surface, and install the new sensors. Tighten the bolts securely. In both cases, reinstall any parts that were removed and refill the cooling system.