Toyota 89422-35010 Sensor, Water Temperature

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The fuses should be checked first.

If the coolant temperature gauge is inoperative, check the fuses first. If the temperature gauge indicates excessive temperature after running awhile, consult the Troubleshooting section in the front of the manual. If the temperature gauge indicates HOT as soon as the engine is started cold, disconnect the wire at the coolant temperature sender. If the gauge reading drops, replace the sending unit. If the reading remains high, the wire to the gauge may be shorted to ground or the gauge is faulty. If the coolant temperature gauge fails to show any indication after the engine has been warmed up, (approximately 10 minutes) and the fuses checked out OK, shut off the engine. Disconnect the wire at the sending unit and, using a jumper wire, connect the wire to a clean ground on the engine. Briefly turn on the ignition without starting the engine. If the gauge now indicates Hot, replace the sending unit. Caution: Don't leave the jumper wire connected any longer than necessary. If the gauge fails to respond, the circuit may be open or the gauge may be faulty. Replacement: Disconnect the electrical connector from the sending unit. Using a deep socket or a wrench, remove the sending unit. Be prepared for coolant spillage. Install the new unit and tighten it securely. Reconnect the electrical connector, refill the cooling system and check for coolant leakage and proper gauge function.

The circuit may be open or the gauge may be faulty.

The Engine Coolant Temperature (ECT) sensor is a component that monitors the temperature of the engine coolant and relays the information to the Powertrain Control Module (PCM) for engine management and to the temperature gauge on the instrument panel.

Depending on the model, either unscrew the ECT sensor from the water outlet housing or, for 2GR-FKS models, carefully remove the retaining clip and pull out the ECT sensor. Installation and Refilling the Cooling System:

To check the ECT sensor resistance, disconnect the electrical connector and use an ohmmeter to measure the resistance between the two terminals, which should be between 2,500 and 3,000 ohms at room temperature.

Yes, proper disposal of used coolant is still required.

On these vehicles, there is a single coolant temperature sensor known as the Engine Coolant Temperature (ECT) sensor. Its primary function is to provide crucial information to the Powertrain Control Module (PCM) for effective engine management. Additionally, the ECT sensor plays a role in providing data for the temperature gauge on the vehicle's instrument panel, allowing the driver to monitor the engine's operating temperature.

A faulty ECT sensor circuit will trigger a diagnostic trouble code.

Shut off the engine and connect the wire at the sending unit to a clean ground on the engine. If the gauge now indicates hot, replace the sending unit. If the gauge still does not work, there may be an open circuit or a faulty gauge.

Non-toxic coolant is available at local auto parts stores. Although the coolant is non-toxic when fresh, proper disposal of used coolant is still required. This procedure applies only to 2006 and earlier models. 2007 and later models use the engine coolant temperature sensor to operate the temperature gauge. If the coolant temperature gauge is inoperative, check the fuses first. If the temperature gauge indicates excessive temperature after running for a while, check the Troubleshooting. If the temperature gauge indicates "Hot" as soon as the engine is started cold, disconnect the wire at the coolant temperature sender. Remove the V-bank cover to locate the coolant temperature gauge sending unit - don't confuse it with the coolant temperature sensor (for the computer), which is right next to it but has two wires attached to it - 2006 and earlier models. If the gauge reading drops, replace the sending unit. If the reading remains high, the wire to the gauge may be shorted to ground or the gauge is faulty. If the coolant temperature gauge fails to show any indication after the engine has been warmed up (approximately 10 minutes) and the fuses have been checked out OK, shut off the engine. Disconnect the single-wire connector at the sending unit and, using a jumper wire, connect the wire to a clean ground on the engine. Briefly turn on the ignition without starting the engine. If the gauge now indicates "Hot," replace the sending unit. If the gauge fails to respond, the circuit may be open or the gauge may be faulty. Drain the coolant. Disconnect the wiring connector from the sending unit. Using a deep socket or a wrench, remove the sending unit. Install the new unit and tighten it securely. Do not use thread sealer as it may electrically insulate the sending unit. Reconnect the wiring connector, refill the cooling system, and check for coolant leakage and proper gauge function.

On these particular vehicles, they are equipped with only one coolant temperature sensor known as the Engine Coolant Temperature (ECT) sensor. This sensor serves a dual purpose: it provides crucial information to the Powertrain Control Module (PCM) for engine management, and it also supplies data for the temperature gauge displayed on the instrument panel. The ECT sensor plays a vital role in monitoring the engine's coolant temperature and ensuring optimal engine performance and accurate temperature readings for the driver's visibility and awareness.

The steps for disposing of used coolant are to drain the coolant and then follow the appropriate disposal methods.

Further investigation is needed.

plug is part of wiring and harness for the engine.

This part is made in Japan

The second part number on the item is the OEM part number

This sensor is for the ECU of the vehicle

Yes, this is a genuine Toyota part

Yes, this is a genuine Toyota part

No, this does not include an o-ring but can be found under part number 90130-12005

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