ENGINE COOLANT TEMPERATURE (ECT) SENSOR INSPECTION [SKYACTIV-G 2.5]

id0140g0802000


ECT Sensor No.1


Function Inspection

1.  Connect the M-MDS to the DLC-2.

2.  Switch the ignition ON (engine off).

3.  Display the PID ECT. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5)].) (See PCM INSPECTION [SKYACTIV-G 2.5].)

4.  Compare the voltage and temperature indications for the PID ECT with the standard in the table indicated below.

•  If they do not match the standard, replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)
•  If they match the standard, perform the resistance inspection. (See Resistance Inspection.)

Standard

ECT

V

°C {°F}
Approx. 3.10
20 {68}
Approx. 2.16
40 {104}
Approx. 1.40
60 {140}
Approx. 0.87
80 {176}
Approx. 0.54
100 {212}


Resistance Inspection

Warning
•  A hot engine can cause severe burns. Turn off the engine and wait until it is cool before removing the ECT sensor.

1.  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

2.  Remove the ECT sensor. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)

3.  Place the ECT sensor in water with a thermometer, and heat the water gradually.

ac5wzw00010959

4.  Measure the resistance between ECT sensor terminals A and B.

•  If not as specified, replace the ECT sensor. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)

Specification

ECT (°C {°F})

Resistance (Kilohms)
20 {68}
Approx. 2.45
80 {176}
Approx. 0.318

ac8wzw00004873


ECT Sensor No.2


Function inspection

1.  Connect the M-MDS to the DLC-2.

2.  Switch the ignition ON (engine off).

3.  Display the PID ECT and ECT2_V. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5)].) (See PCM INSPECTION [SKYACTIV-G 2.5].)

4.  Compare the voltage indications for PID ECT2_V and the temperature indications for PID ECT with the standards in the table indicated below.

•  If they do not match the standard, replace the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)
•  If they match the standard, perform the resistance inspection. (See Resistance Inspection.)

Standard

ECT2_V [V]

ECT [°C {°F}]
Approx. 3.10
20 {68}
Approx. 2.16
40 {104}
Approx. 1.40
60 {140}
Approx. 0.87
80 {176}
Approx. 0.54
100 {212}


Resistance inspection

Warning
•  A hot engine can cause severe burns. Turn off the engine and wait until it is cool before removing the ECT sensor No.2.

1.  Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.)

2.  Remove the ECT sensor No.2. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)

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

ac5wzw00011260

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

•  If not as specified, replace the ECT sensor No.2. (See ENGINE COOLANT TEMPERATURE (ECT) SENSOR REMOVAL/INSTALLATION [SKYACTIV-G 2.5].)

Specification

Engine coolant temperature (°C {°F})

Resistance (Kilohms)
20 {68}
Approx. 2.45
80 {176}
Approx. 0.318

ac8wzw00004873