Inspection [10/2022 - ]: Procedure
WARNING: This page is about a different car, the 2025 Lexus RX 450h+, 2025 Lexus RX 350h, 2024 Lexus RX 450h+, 2024 Lexus RX 350h, and 2023 Lexus RX 350h. However, it is still accessible from the selected car via links, so may be relevant.
- INSPECT ENGINE COOLANT TEMPERATURE SENSOR
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result 1 - 2 20°C (68°F) 2.32 to 2.59 kΩ kΩ 1 - 2 80°C (176°F) 0.310 to 0.326 kΩ kΩ NOTE:If checking the engine coolant temperature sensor in water, be careful not to allow water to contact the terminals. After checking, wipe the water off the engine coolant temperature sensor.
*a Component without harness connected
(Engine Coolant Temperature Sensor)If the result is not as specified, replace the engine coolant temperature sensor.
- Measure the resistance according to the value(s) in the table below.
- INSPECT NO. 2 ENGINE COOLANT TEMPERATURE SENSOR
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition Result 1 (E2) - 2 (THW3) 20°C (68°F) 2.32 to 2.59 kΩ kΩ 1 (E2) - 2 (THW3) 80°C (176°F) 0.310 to 0.326 kΩ kΩ NOTE:If checking the No. 2 engine coolant temperature sensor in water, be careful not to allow water to contact the terminals. After checking, wipe the water off the No. 2 engine coolant temperature sensor.
*a Component without harness connected
(No. 2 Engine Coolant Temperature Sensor)If the result is not as specified, replace the No. 2 engine coolant temperature sensor.
- Measure the resistance according to the value(s) in the table below.