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INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION [SKYACTIV-D 1.8]

INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION [SKYACTIV-D 1.8]

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IAT Sensor No.1


Resistance inspection

Note
•  Because the IAT sensor No.1 is integrated in the MAF sensor, replacing the IAT sensor No.1 includes replacement of the MAF sensor/IAT sensor No.1.

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

2.  Disconnect the MAF sensor/IAT sensor No.1 connector.

3.  Measure the resistance between MAF sensor/IAT sensor No.1 terminals A and B.

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•  If not as specified, replace the MAF sensor/IAT sensor No.1. (See MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.1 REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

Resistance

IAT_B1S1 (°C {°F})

Resistance (Kilohms)
−20 {−4}
13.7—16.6
20 {68}
2.49—2.79
60 {140}
0.622—0.703

Specification (Reference)

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IAT Sensor No.2


Resistance inspection

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

2.  Remove the engine cover. (See ENGINE COVER REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

3.  Disconnect the IAT sensor No.2 connector.

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

5.  Place the detection part of the IAT sensor No.2 in the water and while gradually increasing the water temperature, measure the resistance between IAT sensor No.2 terminals A and B.

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•  If not as specified, replace the IAT sensor No.2. (See INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

Specification (Reference)

Water temperature (°C {°F})

Resistance (Kilohms)
0 {32}
Approx. 34.0
25 {77}
Approx. 17.0
50 {122}
Approx. 10.0
100 {212}
Approx. 4.0

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IAT Sensor No.3


Resistance inspection

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

2.  Remove the engine cover. (See ENGINE COVER REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

3.  Disconnect the IAT sensor No.3 connector.

4.  Measure the resistance between IAT sensor No.3 terminals A and B.

5.  Place the detection part of the IAT sensor No.3 in the water and while gradually increasing the water temperature, measure the resistance between IAT sensor No.3 terminals A and B.

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•  If not as specified, replace the IAT sensor No.3. (See INTAKE AIR TEMPERATURE (IAT) SENSOR NO.3 REMOVAL/INSTALLATION [SKYACTIV-D 1.8].)

Specification (Reference)

Water temperature (°C {°F})

Resistance (Kilohms)
0 {32}
Approx. 34.0
25 {77}
Approx. 17.0
50 {122}
Approx. 10.0
100 {212}
Approx. 4.0

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