Toyota 89615-12090 Knock Control Sensor

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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.

If you're going to reuse the old sensor, you should coat the threads with thread sealant. New sensors come pre-coated with thread sealant, so do not apply any additional sealant as it may affect the operation of the sensor.

When installing knock sensors on 2004 and later models, angle the electrical terminals slightly below the horizontal. Follow the reverse procedure for reassembly and ensure secure tightening of the knock sensors or retaining nuts.

If you're working on a four-cylinder engine, you should pinch off the coolant hoses to the throttle body before removing the intake manifold/throttle body.

Disconnect the cable from the negative terminal of the battery.

ONLY A SINGLE SENSOR

THAT IS A SINGLE SENSOR

IT IS JUST THE SENSOR (1)

THAT IS JUST THE KNOCK CONTROL SENSOR NO WIRING

just one sensor

no sold separately buy one two or as many as you like not a set no harness at all sensors (2) 89615 12090 harness (1) 82219 07010

89615-12090 QTY 2 82219-07010 QTY 1

Part number: 89615-12090 is for 1 sensor only.

Yes, this harness is for both sensors