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:

Rear Beltline Molding Removal/Installation
1. Fully open the rear door glass. 2. Remove the rear door trim.. 3. Remove clip A using a fastener remover and pull up the rear beltline molding in the direction of the arrow (1) shown in the figure. 4. Remove clip B using a fastener remover and pull up the rear beltline molding in the di ...

Oil Seal (Differential) Replacement [A26 M R]
1. On level ground, jack up the vehicle and support it evenly on safety stands. 2. Drain the oil from the transaxle.. 3. Remove the front tires.. 4. Remove the splash shield.. 5. Remove the aerodynamic under cover No.2.. 6. Separate the drive shaft and joint shaft from the transaxle.. 7 ...

Engine Disassembly/Assembly [Mzr 2.3 Disi Turbo]
1. Remove the engine from the transaxle.. 2. Remove the intake-air system.. 3. Remove the exhaust system.. 4. Remove the generator.. 5. Remove the EGR valve.. 6. Remove the ignition coils.. 7. Remove the high pressure fuel pump and high pressure fuel pump cover.. 8. Remove the fuel inj ...

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