FUEL SYSTEM (DFI) 3-43

Inlet Air Pressure Sensor (Service Code 12)

CAUTION

Never drop the sensor, especially on a hard surface.

Such a shock to the part can damage it.

Removal•

Remove:

Fuel Tank (see Fuel System chapter)

Water Temperature Sensor Connector [A]

• Inlet Air Pressure Sensor Bolt [B]

Raise the inlet air pressure sensor [C] and disconnect the inlet air pressure sensor connector and the vacuum hose.

Installation

NOTE

○The inlet air pressure sensor is the same part as the atmospheric sensor except that the sensor has a vacuum hose and different wiring.

•Install:Vacuum Hose

Inlet Air Pressure Sensor

Torque - Inlet Air Pressure Sensor Bolt: 12 N·m (1.2 kgf·m, 104 in·lb)

Input Voltage Inspection

NOTE

○Be sure the battery is fully charged.

○The inspection is the same as “Input Voltage Inspection” of the main throttle sensor or the atmospheric pressure sensor.

•Turn the ignition switch OFF.

•Remove the ECU (see this chapter). Do not disconnect

•the ECU connectors.

Connect a digital voltmeter [A] to the connector [B] with the needle adapter set.

•Special Tool - Needle Adapter Set: 57001–1457

Measure the input voltage with the engine stopped, and with the connectors joined.

•Turn the ignition switch ON.

Inlet Air Pressure Sensor Input Voltage Connections to ECU

Meter (+)→ BL lead (terminal 1) Meter (–) → BR/BK lead (terminal 14)

Standard: 4.75 5.25 V DC

If the reading is within the standard range, check the sensor output voltage.

If the reading is less than the standard range, remove the

ECU and check the wiring between these connectors.

If the wiring is good, check the ECU for its ground and power supply (see ECU section).