Facet 7.3177 Engine Coolant Temperature Sensor

Engine Coolant Temperature Sensor for Toyota and Mazda

Facet 7.3177 is an engine coolant temperature sensor built for vehicles that use an NTC variable-resistance signal between terminals. It provides the temperature input the engine management system uses to monitor coolant conditions and support accurate fuel and ignition control. This Facet 7.3177 sensor covers a wide range of Toyota, Lexus, Mazda, Suzuki, Geo, Kia, Ford, and Jaguar applications.

Key Features

• Engine coolant temperature sensor for temperature signal monitoring
• NTC variable resistance between terminals
• Direct fitment coverage for many Toyota, Lexus, and Mazda models
• Also listed for select Suzuki, Geo, Kia, Ford, and Jaguar applications
• Facet part number 7.3177 for catalog and service matching

Detailed Description

Facet 7.3177 is an engine coolant temperature sensor used to report coolant temperature to the vehicle control system. The NTC design changes resistance as temperature changes, allowing the ECU or gauge circuit to read coolant conditions accurately. This part number is listed across many long-tail fitment searches, including Toyota Camry coolant temperature sensor replacement, Mazda 3 engine coolant temperature sensor, and Toyota Corolla coolant temp sensor applications. It also appears in coverage for Toyota Highlander, Toyota RAV4, Lexus ES300, Mazda CX-5, and other listed models. If you are replacing a failing coolant temp sensor on a Toyota, Lexus, or Mazda platform, Facet 7.3177 is the catalog reference to verify.

What It Is Used For

• Incorrect coolant temperature readings on the dash or scan tool
• Hard starting or rough cold operation tied to temperature input errors
• Cooling fan control issues caused by inaccurate coolant data
• Check engine light concerns related to coolant temperature sensor faults
• Fuel mixture or idle quality problems linked to bad temperature feedback

Installation Notes and Tips

Verify connector style, thread size, and engine application before installation. Confirm the vehicle uses an NTC variable-resistance coolant temperature sensor and match the part to the exact year, make, and model listed in the fitment data. For fitment examples, this part fits 2010-2018 Mazda 3, 2014-2017 Mazda 6, 2003-2008 Toyota Corolla, 2003-2006 Toyota Camry, and 2001-2010 Toyota Highlander. It also fits 1996-2003 Toyota RAV4, 1998-2006 Toyota Sienna, and 1992-2003 Lexus ES300. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Quality Assurance

Facet is a recognized aftermarket brand for engine management and sensor applications. Part number 7.3177 is cataloged for the listed vehicle applications and should be matched to the vehicle’s original sensor specification before service.