Toyota 89615-52030
Knock Sensor

The first steps to replace the Knock Sensor start with coolant drain before removing the air cleaner assembly and separating the accelerator control cable assembly. Separate the transmission oil level gage sub-assembly (A/T TRANSAXLE) and the transmission oil filler tube sub-assembly (A/T TRANSAXLE) before disconnecting ISC valve connector and throttle position sensor connector (M/T TRANSAXLE) and removing the wire harness clamp and then taking off the accelerator control cable bracket and throttle body with its accompanying gasket from the intake manifold. Begin by removing the Cylinder Head Cover No.2 through four nut removal and disconnecting the radiator hose inlet and then taking off the oil level gage sub-assembly. Start by disconnecting the ventilation hose followed by dissociating the union to connector tube hose then the 3 wire harness clamps. Remove the manifold gasket by unfastening the specified 3 bolts and 2 nuts. Remove the knock sensor with Special Service Tool: 09816 30010 by disconnecting its connector. Use Special Service Tool: 09816 30010 to install the new knock sensor and tighten the sensor to 44 N.m (450 kgf.cm, 32 ft.lbf) before reconnecting its connector. Install a new gasket on the intake manifold before installing the intake manifold through its 3 bolts and 2 nuts while applying uniform torque to 30 N.m (306 kgf.cm, 22 ft.lbf) in the specified sequence. After this step, install the 3 wire harness clamps and reconnect both the union to connector tube hose and the ventilation hose. Afterward, attach the oil level gage sub-assembly to the unit and put the radiator hose inlet into position along with cylinder head cover No.2 that requires tightening nut A first followed by nut B to 7.0 N.m (71 kgf.cm, 62 in.lbf). To complete the throttle body installation use a new gasket on the intake manifold and fasten the components together with the bolt and 2 nuts to 30 N.m (306 kgf.cm, 22 ft.lbf). Then proceed with installing the wire harness clamp while reattaching the throttle position sensor connector (M/T TRANSAXLE) and the ISC valve connector. As a final step, install the transmission oil filler tube sub-assembly (A/T TRANSAXLE) together with the transmission oil level gage sub-assembly (A/T TRANSAXLE) and the accelerator control cable assembly followed by the air cleaner assembly then top off the engine with coolant while inspecting for leaks.

Replacing the Knock Sensor requires the engine coolant drainage followed by air cleaner assembly separation and accelerator control cable disconnection. Start by taking off the transmission oil level gauge sub-assembly and transmission oil filler tube sub-assembly that belong to the A/T transaxle but then separate the throttle body assembly while disconnecting the ISC valve connector along with the throttle position sensor connector (for M/T transaxle) followed by removing the wire harness clamp and the bolt and two nuts which unmount the accelerator control cable bracket and throttle body and finally remove the gasket from the intake manifold. After removing the four nuts from the cylinder head cover No.2 follow these steps: disconnect the radiator hose inlet, remove the oil level gauge sub-assembly, detach the ventilation hose and union to connector tube hose, and then lose three wire harness clamps before removing the three bolts and two nuts in the specified sequence and the gasket from the intake manifold. To install the new knock sensor the Special Service Tool: 09816-30010 must be used to separate the sensor from its connector but torque it to 44 N.m (450 kgf.cm, 32 ft.lbf) when replaced. Install the intake manifold with new gasket while mounting three bolts and two nuts even throughout with a torque of 30 N.m (306 kgf.cm, 22 ft.lbf), attain the three wire harness clamps before reuniting the union to connector tube hose and ventilation hose. Install the oil level gauge sub-assembly following the connection of the radiator hose inlet before proceeding with cylinder head cover No.2 installation where you must tighten nut A first then nut B to 7.0 Nm (71 kgf.cm, 62 in.lbf). The new throttle assembly gasket needs installation first before securing its bolt and two nuts to 30 N.m (306 kgf.cm, 22 ft.lbf) throughout. Keep the wire harness clamp positioned and reconnect the throttle position sensor connector for (M/T transaxle) and ISC valve connector. The last sequence includes the installation of the A/T transaxle's transmission oil filler tube sub-assembly and transmission oil level gauge sub-assembly followed by accelerator control cable assembly, air cleaner assembly, engine coolant addition with leak detection methodology.

Service and repair of the knock sensor begins by removing the throttle body followed by the intake manifold. The knock sensor connector should be disconnected before using Special Service Tool: 09816 - 30010 to uninstall the knock sensor. The knock sensor continuity to its body can be checked using an ohmmeter for correct replacement. Install the knock sensor using Special Service Tool: 0981630010 then reconnect its connector. The installation process ends with the intake manifold and then throttle body.

Reinstall the oil level gage sub-assembly, connect the radiator hose inlet, and install the cylinder head cover No.2, tightening nut A first, then nut B to a torque of 7.0 Nm (71 kgf.cm, 62 in.lbf).

Reinstall the oil level gauge sub-assembly, connect the radiator hose inlet, and install the cylinder head cover No.2, tightening nut A first and then nut B to a torque of 7.0 N.m (71 kgf.cm, 62 in.lbf).