3-56 FUEL SYSTEM (DFI)
Inlet Air Temperature Sensor (Service Code 13)
Inlet Air Temperature Sensor Removal/Installation
Never drop the sensor, especially on a hard surface.
Such a shock to the sensor can damage it.
Remove the air cleaner housing (see Air Cleaner Housing
Remove the screw [A].
Pull out the inlet air temperature sensor [B] out of the air
Put the inlet air temperature sensor into the air cleaner
Torque - Inlet Air Temperature Sensor Screw: 1.2 N·m (0.12
Output Voltage Inspection
Be sure the battery is fully charged.
Remove the ECU (see ECU Removal). Do not disconnect
the ECU connectors.
Connect a digital voltmeter to the ECU connector, using
needle adapter set.
Special Tool - Needle Adapter Set: 57001–1457
Inlet Air Temperature Sensor Output Voltage
Connections to ECU Connector
(Other than Europe Models [A])
Meter (+) → Y lead (terminal 20)
Meter (–) → BR/BK lead (terminal 22)
(Europe Models [B])
Meter (+) → Y lead (terminal 26)
Meter (–) → BR/BK lead (terminal 28)
Measure the sensor output voltage with the engine
stopped and the connector joined.
Turn the ignition switch ON.
Output Voltage at ECU
The output voltage changes according to the inlet air
Turn the ignition switch OFF.
If the output voltage is out of the specified, check the ECU
for its ground, and power supply (see ECU Power Supply
Inspection). If the ground and power supply are good,
remove the air cleaner housing, check the wiring between
the ECU and the inlet air temperature sensor.
If the wiring is good, check the sensor resistance.
kgf·m, 11 in·lb)
about 2.25 ∼ 2.50 V at inlet air temperature
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