INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION [SKYACTIV-D 2.2]

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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 cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].)

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 2.2].)

Specification (Reference)

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

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IAT Sensor No.2

Resistance inspection

1.  Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].)

2.  Remove the engine cover. (See ENGINE COVER REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

3.  Disconnect the IAT sensor No.2 connector.

4.  Remove the IAT sensor No.2. (See INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

5.  Place the IAT sensor No.2 in water with a thermometer, and heat the water gradually.

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

•  If not as specified, replace the IAT sensor No.2. (See INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

Specification (Reference)

Water temperature (°C {°F})	Resistance (Kilohms)
0 {32}	Approx. 15.00
50 {122}	Approx. 2.20
100 {212}	Approx. 0.508

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