Service manual

3-46 FUEL SYSTEM (DFI)
Inlet Ai r Pressure Sensor (Service Code 12)
CAUTION
Never drop the sensor, especially on a hard surface.
Such a shock to the part can damage it.
Inlet Air Pressure Sensor Removal
•
Remove:
Air Cleaner (see Air Cleaner Housing Removal)
Screw [A]
•
Disconnect the inlet air pressure sensor connector [B] and
the vacuum hose [C].
•
Remove the inlet air pressure sensor [D].
Inlet Air Pressure Sensor Installation
•
Installation is the reverse of removal.
Torque - Inlet Air Pressure Sensor Mounting S crew: 5.0
N·m (0.51 kgf·m, 44 in·lb)
Inlet Air Pressure Sensor Input Volta ge Inspection
NOTE
○
Be sure the battery is fully charged.
○
The inspection is the same as “Input Voltage Inspection”
of the throttle sensor.
•
Turn the ignition switch OFF.
•
Remove the ECU (see ECU Removal).
○
Do not disconnect the ECU connectors.
•
Connect a digital meter [A] to the connector [B] with the
needle adapter set.
Special Tool - Needle Adapter Set: 57001-1457
Inlet Air Pressure Sensor Input Voltage
Connections to ECU Connector
Meter (+) → BR/W lead (terminal 3)
Meter (–) → BR/BK lead (terminal 10)
•
Measure the input voltage with the engine stopped, and
with the connectors joined.
•
Turn the ignition switch ON.
Input Voltage at ECU
Standard: DC 4.75 ∼ 5.25 V
If the reading is within the standard range, check the out-
put 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).
If the ground and power supply are good, replace the ECU
(see ECU Removal/Installation).