Standard Ignition S3203 Engine Coolant Temperature Sensor Connector

Engine Coolant Temperature Sensor Connector for Toyota

Standard Ignition S3203 is an engine coolant temperature sensor connector built for direct-fit service on select Toyota applications. It features a male connector housing with a rectangular shape, 18-gauge wiring, and a 43 cm harness length for a clean replacement connection at the sensor.

Fits 2018-2022 Toyota Camry, located on intake manifold, and other select Toyota models including Corolla, Corolla Cross, Highlander, Mirai, RAV4, RAV4 Prime, Sienna, Tundra, Venza, and Avalon.

Key Features

• Part number S3203 engine coolant temperature sensor connector
• Male connector with rectangular housing
• 2 blade terminals with female terminal ends
• 18-gauge, 2-wire harness construction
• 43 cm harness length for routing flexibility
• 0-degree bend angle for straightforward installation layout
• Cross-references Standard Ignition S3203 for the same application

Detailed Description

Standard Ignition S3203 is an OE-style electrical connector for the engine coolant temperature sensor circuit. It is built with one male connector, two blade terminals, and a rectangular housing to match the original sensor connection style used across multiple Toyota platforms. The harness measures 430 mm, giving technicians the length needed to restore a damaged or heat-affected connector without altering the factory routing.

This part number is listed for 2023 Toyota Camry, 2019-2023 Toyota Corolla, 2022-2023 Toyota Corolla Cross, 2020-2023 Toyota Highlander, 2021-2023 Toyota Mirai, 2019-2023 Toyota RAV4, 2021-2023 Toyota RAV4 Prime, 2021-2023 Toyota Sienna, 2022-2023 Toyota Tundra, 2021-2023 Toyota Venza, and 2019-2022 Toyota Avalon. It also fits 2018-2022 Toyota Camry located on the intake manifold. Standard Ignition S3203 is a practical replacement when the original coolant temperature sensor connector is cracked, corroded, or no longer making a stable electrical connection.

What It Helps Fix

• Intermittent coolant temperature sensor signal loss
• Corrosion or heat damage at the sensor connector
• Broken locking tabs or damaged terminal retention
• Rough running or drivability issues tied to poor sensor connection
• Check engine light concerns related to coolant temperature circuit faults

Installation Notes and Tips

Verify connector shape, terminal style, and harness length against the original part before installation. Match the vehicle application carefully, especially on Toyota Camry models where fitment includes intake manifold location notes. Inspect the mating sensor terminals for wear or contamination so the replacement connector seats securely and maintains consistent contact.

Quality Assurance

Standard Ignition is a recognized name in replacement electrical components, and part number S3203 is built to match the connector style used in the listed Toyota applications. Confirm fitment by year, make, model, and sensor location before installation.