3-76 FUEL SYSTEM (DFI)
Inlet Air Temperature Sensor (Service Code 13)
Never drop the sensor, especially on a hard surface.
Such a shock to the sensor can damage it.
Remove the fuel tank (see Fuel Tank Removal).
Disconnect the connector [A] from the inlet air tempera-
Pull out the inlet air temperature sensor [B].
Install the inlet air temperature sensor [A] in the grommet
Output Voltage Inspection
Be sure the battery is fully charged.
Remove the ECU (see this chapter). 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
Meter (+) → P lead (terminal 18)
Meter (–) → BR/BK lead (terminal 14)
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.
about 2.25 ∼ 2.50 V at inlet air
temperature 20°C (68°F)