Inspection

1. Turn the ignition switch OFF.
2. Remove the ECTS .
3. After immersing the thermistor of the sensor into engine coolant, measure resistance between the ECTS terminals 3 and 4.
4. Check that the resistance is within the specification.

Specification:Refer to "Specification"

Removal

1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2. Disconnect the engine coolant temperature sensor connector (A).

3. Remove the spring clip (A), and then pull the sensor from the water temperature control assembly.

CAUTION:
Note that engine coolant may be flowed out from the water temperature control assembly when removing the sensor.

4. Supplement the engine coolant .

Installation

CAUTION:
- Install the component with the specified torques.
- Note that internal damage may occur when the component is dropped. If the component has been dropped, inspect before installing.

CAUTION:
- Apply the engine coolant to the O-ring.

CAUTION:
- Insert the sensor in the installation hole and be careful not to damage.

1. Installation is reverse of removal.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Coolant Temperature Sensor/Switch (For Computer): Service and Repair

Use the Manual With the Right Hardware

When to See a Mechanic

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