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:

Overheating
If the high engine coolant temperature warning light illuminates, the vehicle loses power, or you hear a loud knocking or pinging noise, the engine is probably too hot. WARNING Switch the ignition to off and make sure the fan is not running before attempting to work near the co ...

Windshield Wiper Motor Disassembly/Assembly
1. Disassemble in the order indicated in the table. 1 Wiper link No.1 (See Ball Joint Assembly Note.) 2 Wiper link No.2 (See Ball Joint Assembly Note.) 3 Nut 4 Washer ...

Control Switches
Temperature control dial This dial controls temperature. Turn it clockwise for hot and counterclockwise for cold. Fan control dial The fan has seven speeds. AUTO position The amount of airflow will be automatically controlled in accordance with the set temperature. Except AUTO position Th ...

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