FUEL SYSTEM (DFI) 3-35

Inlet Air Pressure Sensor (Service Code/Character-12/bOSt)

If the output voltage is far out of the usable range, check the output voltage at the sensor connector [A].

Measure the output voltage at the sensor in the same way as input voltage inspection. Note the following.

[B]Inlet Air Pressure Sensor

Special Tool - Sensor Harness Adapter: 57001-1561

Inlet Air Pressure Sensor Output Voltage

Connections to Sensor

Meter (+) → G/R lead [C]

Meter (–) → BK/W lead [D]

Output Voltage at Sensor Connector

Usable Range: 3.75 4.25 V DC at the standard atmospheric pressure (101.32 kPa or 76 cmHg absolute)

If the output voltage is normal, check the wiring for conti- nuity (see next diagram).

If the output voltage is out of the usable range, replace the sensor.

Turn the ignition switch OFF.

Remove the sensor harness adapter.

Output Voltage Performance

(at Input Voltage: 4.75 5.25 V)

P:Vacuum Pressure Vo: Output Voltage

1.

ECU

3.

Joint Connector H

2.

Joint Connector E

4.

Inlet Air Pressure Sensor

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Kawasaki STX-15F service manual Joint Connector E Inlet Air Pressure Sensor