ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [MZ-CD 1.6 (Y6) (EURO4 emission level)]

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Caution

•  Water penetrating the connector will cause sensor malfunction. To prevent this, be careful not to damage the wiring harnesses or the waterproof connector so as to cause water penetration.

Visual Inspection

1.  Remove the ECT sensor. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6) (EURO4 emission level)].)

2.  Verify that there are no metal shavings on the sensor.

3.  Visually inspect the ECT sensor for the following:

•  Damage

•  Cracks

•  Rusted sensor terminal

•  Bent sensor terminal

―  If there is any malfunction, replace the ECT sensor.

4.  Install the ECT sensor. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6) (EURO4 emission level)].)

Voltage inspection

1.  Idle the engine.

2.  Measure the output voltage between ECT sensor terminal B and body ground.

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•  If not within the specification, replace the ECT sensor. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [MZ-CD 1.6 (Y6) (EURO4 emission level)].)