Toyota 89422-33030
Coolant Temperature Sensor

A replacement of the Engine Coolant Temperature Sensor requires engineers to drain engine coolant and disconnect the battery negative terminal. The engine coolant temperature sensor removal process begins by disconnecting the connector followed by sensor removal using Special Service Tool: 09817-33190. The sensor must come out together with the gasket. Place the new gasket onto the new engine coolant temperature sensor then install it using Special Service Tool: 09817-33190 with a specified torque of 19.6 N.m (200 kgf.cm, 14 ft.lbf). Connect the engine coolant temperature sensor connector and secure the battery negative terminal with 5.4 N.m (55 kgf.cm, 48 in.lbf). Engine coolant needs to be added before checking for leakage.

The Coolant Temperature Sensor/Switch service procedure requires one to drain the engine coolant then disconnect the negative battery cable for a minimum of 90 seconds to avoid triggering Air Bag and seat belt pretensioners. Take out the engine coolant temperature sensor together with its gasket using Special Service Tool: 09817-33190 after disconnecting its connector. After sensor installation a new gasket should be applied to the sensor which needs to be mounted using tool: 09817-33190 to achieve 19.6 N.m (200 kgf.cm, 14 ft.lbf) torque. To complete the battery service, connect the sensor connector while reconnecting the cable back to the negative battery terminal. Then fill in engine coolant before checking for any leakage. Finally, perform initialization on affected systems that need initialization after disconnecting and reconnecting the cable from the negative battery terminal.

Start the installation of the engine coolant temperature sensor by placing on it a brand new gasket before proceeding. The engine coolant temperature sensor can be installed through Special Service Tool: 09817-33190 and must be torqued to 20 Nm (204 kgf-cm, 15 ft-lbf) then the sensor connector should be connected. Start by installing the air cleaner case sub-assembly followed by the air cleaner cap sub-assembly after which the air cleaner inlet assembly can be added. Proceed to add engine coolant followed by leak inspection of the system. The last step requires the installation of the No. 1 engine cover sub-assembly.

The first step to replace the Engine Coolant Temperature Sensor in a 2AZ-FE control system is draining engine coolant. The procedure starts with air cleaner assembly removal which includes disconnecting all connectors from mass air flow meter and separate wire harness before disconnecting No. 1 vacuum switching valve and ventilation hose and No. 2 fuel vapor feed hose. The procedure to access the Engine Coolant Temperature Sensor involves loosening the No. 1 air cleaner hose clamp and unlocking the air cleaner assembly clamp then removing the components that include the air cleaner cap sub-assembly with the No. 1 air cleaner hose. After disconnecting the wire harness users need to take out the air cleaner filter element sub-assembly and remove three bolts to remove the air cleaner case sub-assembly. Lastly disconnect the engine coolant temperature sensor connector and install Special Service Tool: 09817-33190 to eliminate the engine coolant temperature sensor together with its gasket.

The first step for removing the Coolant Temperature Sensor/Switch for the 1GR-FE engine control system includes pressurizing the fuel system followed by draining all engine coolant. The battery cable needs disconnection from the negative terminal before V-bank cover and air cleaner assembly with throttle body bracket and oil baffle plate followed by No. 1 surge tank stay extractio n. The process also requires removal of the No. 2 surge tank stay and intake air surge tank. The third part of the operation requires users to detach the No. 2 fuel pipe sub-assembly. You need to disconnect the engine coolant temperature sensor connector before using a 19 mm deep socket wrench to take off the water temperature sensor with its gasket.

A new gasket should be used when temporarily installing the 2ZR-FE engine control system's engine coolant temperature sensor. The sensor installation process requires the use of Special Service Tool: 09817-33190 to achieve a torque of 20 Nm (200 kgf-cm, 14 ft-lbf) when tightening. Add engine coolant after the installation then check for coolant leakages. Seal the installation by mounting the No. 2 cylinder head cover.

A change of engine coolant needs to be performed before beginning the removal process of the Coolant Temperature Sensor/Switch for the 2ZR-FE engine control system. The next procedure entails removing the No. 2 cylinder head cover. The first step involves disconnecting the engine coolant temperature sensor connector followed by the use of Special Service Tool: 09817-33190 to remove the engine coolant temperature sensor.

The 2AZ-FE engine control requires installation of the engine coolant temperature sensor through a new gasket with 20 Nm (204 kgf-cm, 15 ft-lbf) torque. You must connect the engine coolant temperature sensor connector as the second step. Fasten first the air cleaner case before installing the air cleaner cap sub-assembly with its connected hose. Then you must fill the system with coolant before checking for any leakages. You should complete installation of the No. 1 engine cover sub-assembly.

The process of removing the 3UR-FE engine control Coolant Temperature Sensor/Switch begins with detaching the right and left front fender splash shield sub-assembly followed by the No. 1 engine under cover sub-assembly removal and engine coolant drain. Subsequently, remove the V-bank cover sub-assembly. Start by disconnecting the sensor connector. Then use a 19 mm deep socket wrench to disassemble the sensor while extracting the gasket. Drain the engine coolant while performing the step of removing the No. 1 engine under cover sub-assembly. The technician should detach the V-bank cover sub-assembly after draining the engine coolant. Detaching the engine coolant temperature sensor includes disconnecting the sensor connector followed by installation of a 19 mm deep socket wrench to remove the sensor then removing the sensor gasket.

A technician should start the Engine Coolant Temperature Sensor maintenance by taking off the Radiator Support Opening Cover and Engine Under Cover LH together with the Engine Under Cover RH. The battery cable needs removal while waiting for at least 90 seconds to avoid Air Bag and seat belt pretensioner activation before draining engine coolant and HV coolant. First uninstall the Inverter with Converter before moving to sensor connector separation and applying the 19 mm deep socket wrench to remove the sensor together with its gasket. The installation process requires a 19 mm deep socket wrench to install a new gasket and sensor which should be tightened to 20 N.m (204 kgf.cm, 15 ft.lbf) torque value before reconnecting the sensor connector. Reinstall the Inverter with Converter while reconnecting the cable to the negative battery terminal and add both engine coolant and HV coolant to the system. After checking both systems for any leakage you should put back the Engine Under Cover RH and Engine Under Cover LH together with the Radiator Support Opening Cover. When reattaching the negative battery terminal some systems need initialization procedures to be performed.

The first step for 2AR-FE engine control system Coolant Temperature Sensor/Switch removal requires engine coolant draining. The sensor connector can be disconnected before using Special Service Tool: 09817-33190 to separate the sensor from its gasket.

First install the new engine coolant temperature sensor and its gasket in the 2UZ-FE engine control system by tightening it to a torque of 20 Nm (200 kgf-cm, 14 ft-lbf). After fitting the engine coolant temperature sensor connector to the sensor attach a new gasket then install the engine coolant temperature sensor. Torque the gasket to 20 Nm (200 kgf-cm, 14 ft-lbf). You must install the air cleaner hose assembly after which you should add engine coolant and verify there are no leaks in the engine coolant system. The last step involves installation of the throttle body cover sub-assembly.

The first step when servicing the Coolant Temperature Sensor/Switch (For Computer) is to drain engine coolant. The service starts with V-bank cover sub-assembly removal and continues with the sequence of No. 2 air cleaner inlet, No. 1 air cleaner inlet, air cleaner cap sub-assembly, and air cleaner case sub-assembly. The engine coolant temperature sensor requires uninstallation after disconnecting its connector. The installation process should start with the engine coolant temperature sensor before torque application to 20 Nm (204 kgf.cm, 15 ft. lbs.) followed by reconnecting the engine coolant temperature sensor connector. Follow the installation steps for the items which include the air cleaner case sub-assembly, air cleaner cap sub-assembly and the No. 1 air cleaner inlet followed by the No. 2 air cleaner inlet. Install the V-bank cover sub-assembly following leak inspection procedures and engine coolant addition.

The first step in removing the Coolant Temperature Sensor/Switch for the 1GR-FE engine control system requires disconnecting the cable from the negative battery terminal after which you need to wait 90 seconds following the ignition switch shutdown to enable the navigation system to save memory and settings. During the procedure first uninstall the intake air surge tank before disassembling the No. 1 along with No. 2 fuel pipe sub-assemblies. Proceed by disconnecting the six fuel injector connectors then remove the ten bolts together with the two gaskets and the intake manifold. The procedure ends with disconnecting the sensor connector before removing both the engine coolant temperature sensor and its gasket.

The first step when replacing the 1AR-FE engine control Coolant Temperature Sensor/Switch requires removing both the No. 1 engine under cover and the No. 2 engine under cover. The first step involves removing the windshield wiper motor link then taking out the outer cowl top panel sub-assembly. Start the process by draining the engine coolant before proceeding to uninstall the engine cover at position No.1 along with the vacuum switching valve at position No.1 and the air cleaner components including the air cleaner cap sub-assembly and filter element sub-assembly from the air cleaner case. The last step includes separation of the engine coolant temperature sensor and its gasket after disconnecting its connector.

Special Service Tool: 09817-33190.

Use Special Service Tool: 09817-33190 to remove the sensor and gasket.

Add engine coolant and inspect for any coolant leaks.

Connect the cable to the negative battery terminal and add engine coolant.

Remove the No. 2 cylinder head cover.

Connect the sensor connector.

Install the No. 2 cylinder head cover.

Reconnect the sensor connector, then connect the cable to the negative battery terminal.

Remove the No. 1 engine cover sub-assembly.

First, drain the engine coolant.

Add engine coolant and check for engine coolant leakage.

A torque of 20 Nm (204 kgf-cm, 15 ft-lbf) should be applied.

Special Service Tool: 09817-33190.

Disconnect the sensor connector, then use a 19 mm deep socket wrench to remove the sensor.

Disconnect the No. 2 fuel pipe sub-assembly.

19.6 N.m (200 kgf.cm, 14 ft.lbf).

Remove the No. 1 engine cover sub-assembly.

Disconnect the sensor connector and use a 19 mm deep socket wrench to remove the sensor and gasket.

Install the windshield wiper motor and link, and complete the process by installing the No. 1 engine under cover.

The V-Bank Cover Sub-Assembly.

Install a new gasket and the engine coolant temperature sensor, ensuring a torque of 20 Nm (200 kgf-cm, 14 ft-lbf).

Disconnect the sensor connector and use a 19 mm deep socket wrench to remove the sensor and gasket.

Place a new gasket onto the sensor.

The engine coolant and the HV coolant.

First, drain the engine coolant.

Connect the sensor connector.

Remove the air cleaner case.

Take off the air cleaner cap sub-assembly and the air cleaner case sub-assembly.

Remove the engine coolant temperature sensor along with its gasket.

Set a new gasket on each cylinder head, align the port holes, place the manifold on the cylinder heads, and uniformly tighten the 10 bolts to a torque of 26 N.m.

Disconnect the cable from the negative battery terminal and wait at least 90 seconds after turning off the ignition switch.

Add engine coolant and check for any engine coolant leakage.

Add engine coolant and check for any engine coolant leakage.

Add engine coolant and reconnect the cable to the negative battery terminal.

Add engine coolant.