Mazda 3 Service Manual: Engine Coolant Temperature (ECT) Sensor Inspection [Mzr 2.0, Mzr 2.5]
ECT Sensor No.1
Resistance inspection
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.
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.
-
If not as specified, replace the ECT sensor No.1..
|
ECT (°C {°F}) |
Resistance (kilohms) |
|
20 {68} |
Approx. 37.34 |
|
80 {176} |
Approx. 3.84 |
ECT Sensor No.2 Inspection
Resistance inspection
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.
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.
-
If not as specified, replace the ECT sensor No.2..
|
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:
Power Metal Oxide Semiconductor Field Effect Transistor (Power Mos Fet) Inspection
[Full Auto Air Conditioner]
1. Verify that the continuity between the power MOS FET terminals is as indicated
in the table.
If there is any malfunction, replace the power MOS FET.
If the blower motor operation is not normal even though no malfunction can
be verified, inspect the climate control unit..
...
Instrument Cluster Inspection
Speedometer
Using a speedometer tester
CAUTION:
When only the front or the rear wheels are driven using a speedometer tester,
the ABS or DSC may determine that the vehicle speed signal is in error and the
engine cannot be stopped by the normal operation. If the engine cannot be stopp ...
How to Use Aha
Aha is an application which can be used to enjoy various Internet content
such as Internet
radio and podcasts.
Stay connected to your friends activities by getting updates from Facebook and
Twitter.
Using the location-based service, nearby services and destinations can be
searched or re ...