INTAKE AIR TEMPERATURE (IAT) SENSOR INSPECTION [SKYACTIV-G 2.5T]

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IAT 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 IAT. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5T)].) (See PCM INSPECTION [SKYACTIV-G 2.5T].)

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

•  If they do not match the standard, perform the resistance inspection. (See Resistance inspection.)

Standard

IAT

V

°C {°F}
Approx. 2.70
20 {68}
Approx. 1.80
40 {104}
Approx. 1.20
60 {140}


Resistance inspection

Note
•  The MAF sensor and IAT sensor No.1 cannot be removed as a single unit. When replacing the IAT sensor No.1, replace the MAF sensor/IAT sensor No.1.

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

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-G 2.5T].)

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


Function inspection

1.  Connect the M-MDS to the DLC-2.

2.  Switch the ignition ON (engine off).

3.  Display the PID IAT2. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5T)].) (See PCM INSPECTION [SKYACTIV-G 2.5T].)

4.  Compare the voltage and temperature indications for the PID IAT2 with the standard in the table indicated below.

•  If they do not match the standard, perform the resistance inspection. (See Resistance inspection.)

Standard

IAT2

V

°C {°F}
Approx. 3.57
20 {68}
Approx. 2.70
40 {104}
Approx. 1.87
60 {140}


Resistance inspection

Note
•  The MAP sensor and IAT sensor No.2 cannot be removed as a single unit. When replacing the IAT sensor No.2, replace the MAP sensor/IAT sensor No.2.

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

2.  Remove the MAP sensor/IAT sensor No.2. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)

3.  Measure the resistance between MAP sensor/IAT sensor No.2 terminals A and B.

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•  If not as specified, replace the MAP sensor/IAT sensor No.2. (See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)

Specification (Reference)

IAT (°C {°F})

Resistance (Kilohms)
0 {32}
Approx. 5.9
20 {68}
Approx. 2.5
80 {176}
Approx. 0.323
130 {266}
Approx. 0.0893

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