Inlet Air Pressure Sensor (Service Code 12)
Never drop the sensor, especially on a hard surface.
Such a shock to the part can damage it.
Left Center Fairing (see Center Fairing Removal in the
Disconnect the inlet air pressure sensor connector [A] and
the vacuum hose [B].
Pull up the inlet air pressure sensor [C].
Inlet Air Pressure Sensor
Input Voltage Inspection
Be sure the battery is fully charged.
The inspection is the same as "Input Voltage Inspection"
of the main throttle sensor.
Turn the ignition switch OFF.
Remove the ECU (see ECU Removal). 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 10)
Meter (–) → BR/BK lead (terminal 28)
4.75 ∼ 5.25 V DC
If the reading is within the standard range, check the sen-
sor 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 Power Supply Inspection).
FUEL SYSTEM (DFI) 3-45