Toyota 89422-06010
Coolant Temperature Sensor

Draining engine coolant should be the first step when servicing the Coolant Temperature Sensor/Switch. Start by taking away the No. 1 engine cover sub-assembly and air cleaner inlet assembly followed by air cleaner cap sub-assembly and air cleaner case sub-assembly. The service on the engine coolant temperature sensor starts with disconnectoring its connector followed by using Special Service Tool: 09817-33190 to remove both the sensor and gasket. The installation requires positioning a new gasket onto the engine coolant temperature sensor and using Special Service Tool: 09817-33190 to secure it with a torque of 20 N.m (204 kgf.cm, 15 ft.lbf). After reconnecting the engine coolant temperature sensor connector the service technician should reinstall the air cleaner case sub-assembly followed by the air cleaner cap sub-assembly and the air cleaner inlet assembly. The maintenance completes with adding engine coolant followed by leak inspection before reattaching the No. 1 engine cover sub-assembly.

Similarly the process for Temperature Control Switch replacement begins with negative cable disconnection then waiting for 90 seconds to avoid Air Bags from activating. The next step requires removal of the Instrument Cluster Finish Panel Garnish No.2 after which the Instrument Panel Sub-Assembly needs to come out. Begin by removing the Instrument Cluster Finish Panel Sub-Assembly Center through the release of its eight claws as well as five clips before disconnecting the connector to extract the panel. The first step for installation involves fixing the Instrument Cluster Finish Panel Sub-Assembly Center before attaching the Instrument Panel Sub-Assembly and the Instrument Cluster Finish Panel Garnish No.2. The final step involves system initialization since some systems need it when the cable removes from the negative battery terminal followed by cable reconnection.

The removal process for the Coolant Temperature Sensor/Switch of the 2ZR-FE engine control begins by removing the No. 2 cylinder head cover. Next, drain the engine coolant. You should first remove the air cleaner cap sub-assembly. The engine coolant temperature sensor should be removed after disconnecting its connector.

The installation sequence for the 2ZR-FE engine control sensor requires sensor insertion through a new gasket with a torque application of 20 Nm (200 kgf-cm, 14 ft-lbf). Attach the engine coolant temperature sensor connector as a following step. The next step includes installing the air cleaner cap sub-assembly followed by engine coolant addition before checking for leakages. As the final step install the No. 2 cylinder head cover.

Service of the Coolant Temperature Sensor/Switch requires users to remove the negative cable from the battery terminal while draining engine coolant. You need to remove the engine coolant temperature sensor by first disconnecting its connector and using Special Service Tool: 09817-33190 to extract it. You should install the new engine coolant temperature sensor using a fresh gasket while providing temporary installation before the use of Special Service Tool: 09817-33190 leads to a torque measurement of 20 Nm (204 kgf.cm, 15 ft. lbs.) during sensor connector reattachment. After tightening the cable to the negative terminal at 5.4 Nm (55 kgf.cm, 48 in. lbs.), add engine coolant while inspecting for any coolant leakage.

Place a new gasket onto the sensor.

The air cleaner case sub-assembly.

Use Special Service Tool: 09817-33190.

Disconnect the cable from the negative battery terminal and wait at least 90 seconds to prevent airbag and seat belt pretensioner activation.

The throttle body, intake air connector pipe, and V-bank cover sub-assembly.

Place a new gasket onto the sensor.

Install the V-bank cover.

Drain the engine coolant.

Install the throttle body cover sub-assembly.

Add engine and HV coolant, checking for leaks in both systems.

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

First, drain the engine coolant.

Install the air cleaner hose assembly, add engine coolant, and inspect for any engine coolant leaks.

Disconnect the sensor connector, remove the engine coolant temperature sensor, and take off the gasket from the sensor.

Connect the engine coolant temperature sensor connector.

Place a new gasket on the sensor.

Disconnect the No. 1 and No. 2 fuel pipe sub-assemblies.