Kawasaki VULCAN 1600 CLASSIC (2003) [103/575] Inlet air pressure sensor input voltage

Kawasaki VULCAN 1600 CLASSIC (2003) [103/575] Inlet air pressure sensor input voltage
FUEL SYSTEM (DFI) 3-45
Inlet Air Pressure Sensor (Service Code 12)
Measure the input voltage to the inlet air pressure sensor
with the engine stopped, and with the connectors joined.
Turn the ignition SW ON.
Inlet Air Pressure S ensor Input Voltage
Connections to ECU
Meter (+) BL/W lead (terminal 35)
Meter (–) BR/BK lead (terminal 11)
Standard: 4.75 5.25 V DC
Turn the ignition SW OFF.
If the reading is less than the standard range, check the
ECU for its ground, and power supply (see t his chapter).
If the ground and power supply are good, the ECU is sus-
pect. Replace the ECU.
If the reading is within the standard range, check the sen-
sor output voltage.
Output Voltage Inspection
NOTE
The output voltage changes according to the local at-
mospheric pressure.
Check the output voltage of the sensor at the E CU con-
nector [A].
Measure the output voltage with the engine stopped and
with the connector joined.
Turn the ignition SW ON.
Needle Adapters [B]
Inlet Air Pressur e Sensor Output Voltage
Connections to ECU
Meter (+) W/BL lead (terminal 29)
Meter (–) BR/BK lead (terminal 11)
Usable Range:
3.74 4.26 V DC at the standard
atmospheric pressure (101.32 kPa, or
76 cmHg absolute)
If the output voltage is at about 4.8 V, the ECU is normal.
Remove the fuel tank and check the wiring between the
ECU and the sensor.
If the output voltage is at about 4.8 V and out of the usable
range, remove the fuel tank and check the w iring. If the
wiring is good, check the sensor itself as follows.
Turn the ignition SW OFF and remove the needle
adapters.
Apply silicone sealant to the seals of the connector for
waterproofing.
Silicone Sealant (Kawasaki Bond: 56019-120)
- Connector Seals

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