INTAKE AIR TEMPERATURE (IAT) SENSOR NO.2 INSPECTION [MZR-CD (RF Turbo)]

Note

• Perform the following test only when directed.

Resistance Inspection

1. Remove the IAT sensor No.2. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)])

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

3. Measure the resistance between the IAT sensor No.2 terminals using an ohmmeter.

• If not as specified, replace the IAT sensor No.2.

• If IAT sensor N0.2 is okay, perform the "Circuit Open/Short Inspection".

Specification

Water temperature (°C {°F})	Resistance (kilohm)
20 {68}	2.21-2.69
80 {176}	0.29-0.35

Circuit Open/Short Inspection

1. Disconnect the PCM connector. (See PCM REMOVAL/INSTALLATION [MZR-CD (RF Turbo)])

2. Inspect for open/short circuit in the following wiring harnesses.

• If there is open/short circuit, repair or replace wiring harnesses.

Open circuit

• IAT sensor No.2 terminal A and PCM terminal 79

• IAT sensor No.2 terminal B and PCM terminal 74

Short circuit

• IAT sensor No.2 terminal A and power supply

• IAT sensor No.2 terminal A and body ground

• IAT sensor No.2 terminal B and power supply