Mazda CX-5 Service & Repair Manual: Intake Air Temperature (Iat) Sensor

Mazda CX-5 Service & Repair Manual / Engine / Intake / Intake Air Temperature (Iat) Sensor

IAT Sensor No.1

Purpose/Function

Detects the IAT before it passes through the throttle body as basic information for mainly determining the fuel injection amount.
Detects the IAT before it passes through the throttle body and inputs it to the PCM as an IAT signal.

Construction

Built into the MAF sensor.
A cold resistor has been adopted as the detecting element for detecting the IAT.

Operation

Inputs the signal, which fluctuates according to the IAT after passing through the air cleaner, to the PCM.

IAT sensor No.1 characteristic

Fail-safe


DTC No.	Fail-safe function
P0112:00	Illuminates the charging system warning light. Fixes the intake air temperature (for engine control) at 20 °C {68 °F}. Inhibits the fuel cut control during shift change.
P0113:00	Illuminates the charging system warning light. Fixes the intake air temperature (for engine control) at 20 °C {68 °F}. Inhibits the fuel cut control during shift change.

IAT Sensor No.2

Purpose/Function

Detects the IAT (in intake manifold) after it passes through the throttle body as basic information for mainly determining the fuel injection amount.
Detects the IAT (in intake manifold) after it passes through the throttle body and inputs it to the PCM as an intake air temperature signal.

Construction

Built into the MAP sensor.
A cold resistor has been adopted as the detecting element for detecting the IAT.

Operation

Inputs the signal, which fluctuates according to the IAT in the intake manifold, to the PCM.

IAT sensor No.2 characteristic

Fail-safe

Function not equipped.

Intake Air Temperature (Iat) Sensor Inspection

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 ...

Intake Manifold Vacuum Inspection

1. Disconnect the evaporative hose No.3 (purge solenoid valve side) and install the vacuum gauge.. 2. Verify that the intake air hoses are installed securely. 3. Warm up the engine. 4. Measure ...

Other materials:

Break-In Period
No special break-in is necessary, but a few precautions in the first 1,000 km (600 miles) may add to the performance, economy, and life of your Mazda. • Do not race the engine. • Do not maintain one constant speed, either slow or fast, for a long period of time. • Do not drive constantl ...

Scheduled Maintenance (U.S.A., Canada, and Puerto Rico)
Follow Schedule 1 if the vehicle is operated mainly where none of the following conditions apply. • Repeated short-distance driving • Driving in dusty conditions • Driving with extended use of brakes • Driving in areas where salt or other corrosive materials are used • Driving on ...

Fuel Injector Relay
Purpose, Function Supplies power to the PCM for the fuel injector and spill valve control solenoid valve operation. Construction The fuel injector relay is installed in the relay and fuse block. Operation When the ignition is switched ON, the battery voltage ...