INTAKE AIR TEMPERATURE (IAT) SENSOR NO.1 INSPECTION [WL-C, WE-C]

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Note
•  Perform the following inspection only when directed.

Resistance Inspection

1.  Disconnect the boost sensor/IAT sensor No.1 connector.

2.  Measure the resistance between IAT sensor No.1 terminals A and B using an ohmmeter.

•  If not as specified, replace the boost sensor/IAT sensor No.1.
•  If as specified, carry out the “Circuit Open/Short inspection”.

Specification

Water temperature (°C {°F})

Resistance (kilohm)
20 {68}
2.41—2.61
80 {176}
0.32—0.34

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Circuit Open/Short Inspection

1.  Disconnect the boost sensor/IAT sensor No.1 connector.

2.  Disconnect the PCM connector.(SeePCM REMOVAL/INSTALLATION [WL-C, WE-C].) (See PCM REMOVAL/INSTALLATION (U.K. Specs.) [WL-C, WE-C].)

3.  Inspect for an open or short circuit in the following siring harnesses.

•  If there is an open or short circuit, repair or replace wiring harnesses.
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Open circuit
•  Signal circuit (Boost sensor/IAT sensor No.1 connector terminal A and PCM connector terminal 111)
•  Ground circuit (Boost sensor/IAT sensor No.1 connector terminal B and PCM connector terminal 141)
Short circuit
•  IAT sensor No.1 connector terminal A and PCM connector terminal 111 to ground