Mazda 3 manuals

Mazda 3 Service Manual: Engine Coolant Temperature (ECT) Sensor Inspection [Mzr 2.0, Mzr 2.5]

Mazda 3 Service Manual / Engine / Control / Sensors, Switches, Relays / Engine Coolant Temperature (ECT) Sensor Inspection [Mzr 2.0, Mzr 2.5]

ECT Sensor No.1

Resistance inspection

WARNING:

1. Remove the battery cover..

2. Disconnect the negative battery cable..

3. Drain the engine coolant..

4. Remove the battery and battery tray..

5. Disconnect the ECT sensor No.1 connector.

6. Remove the ECT sensor No.1..

7. Place the ECT sensor No.1 in water with a thermometer, and heat the water gradually.

8. Measure the resistance between ECT sensor No.1 terminals A and B.


Specification


ECT (°C {°F})

Resistance (kilohms)

20 {68}

Approx. 37.34

80 {176}

Approx. 3.84


ECT Sensor No.2 Inspection

Resistance inspection

WARNING:

1. Remove the battery cover..

2. Disconnect the negative battery cable..

3. Drain the engine coolant..

4. Disconnect the ECT sensor No.2 connector.

5. Remove the ECT sensor No.2..

6. Place the ECT sensor No.2 in water with a thermometer, and heat the water gradually.

7. Measure the resistance between ECT sensor No.2 terminals A and B.


Specification


ECT (°C {°F})

Resistance (kilohms)

20 {68}

Approx. 2.45

80 {176}

Approx. 0.318


Crankshaft Position (CKP) Sensor Removal/Installation [Mzr 2.0, Mzr 2.5]
Removal CAUTION: When foreign material such as an iron chip is on the CKP sensor, it can cause abnormal output from the sensor because of flux turbulence and adversely affect the engine ...

Engine Coolant Temperature (ECT) Sensor Removal/Installation [Mzr 2.0, Mzr 2.5]
WARNING: When the engine is hot, it can badly burn. Turn off the engine and wait until it is cool before removing the ECT sensor. ECT Sensor No.1 1. Remove the battery cover.. 2. D ...

Other materials:

Timing Chain Removal/Installation [Mzr 2.0, Mzr 2.5]
1. Remove the battery cover.. 2. Disconnect the negative battery cable.. 3. Remove the plug hole plate.. 4. Disconnect the wiring harness. 5. Remove the ignition coils.. 6. Remove the spark plugs.. 7. Remove the ventilation hose. 8. Remove the coolant reserve tank with the hose still c ...

Operating Tips for WMA
WMA is short for Windows Media Audio and is the audio compression format used by Microsoft. Audio data can be created and stored at a higher compression ratio than MP3. This unit plays files with the extension (.wma) as WMA files. Microsoft and Windows Media are registered trademarks of ...

Air Filter Removal/Installation [Mzr 2.0, Mzr 2.5]
Except for Mexico 1. Remove the fuel-filler pipe protector.. 2. Remove in the order indicated in the table. 1 Evaporative hose 2 Air filter 3. Install in the reverse order of removal. ...

© 2016-2025 Copyright www.mazda3tech.com