2-88 FUEL SYSTEM (DFI)
Inlet Air Temperature Sensor (Fault Code 13)
Never drop the sensor, especially on a hard surface.
Such a shock to the sensor can damage it.
Remove the right air cleaner base (see Right Air Cleaner
Housing Removal in this chapter).
Disconnect the connector [A] from the inlet air tempera-
ture sensor, and unscrew the nut [B].
Remove the inlet air temperature sensor.
Torque - Inlet Air Temperature Sensor Nut: 7.8 N·m (0.80
kgf·m, 69 in·lb)
Output Voltage Inspection
Be sure the battery is fully charged.
Remove the ECU (see this chapter). Do not disconnect
the ECU connectors.
Connect a digital voltmeter [A] to the ECU connector [B],
using two needle adapters [C].
Special Tool - Needle Adapter Set: 57001-1457
Measure the sensor output voltage with the engine
stopped and the connector joined.
Turn the ignition switch ON.
Inlet Air Temperature Sensor Output Voltage
Connections to ECU Connector
Meter (+) → P lead (terminal 18)
Meter (–) → BR/BK lead (terminal 21)
Output Voltage at ECU
2.6 V at inlet air temperature 20°C
The output voltage changes according to the inlet air
Turn the ignition switch OFF.
If the output voltage is out of the specified, check the ECU
for its ground, and power supply (see ECU section in this
chapter). If the ground and power supply are good, re-
place the ECU.
If the output voltage is far out of the specified (e.g. when
the wiring is open, the voltage is about 4.6 V), remove
the right air cleaner base, and check the wiring (see next
Remove the needle adapters, and apply silicone sealant
to the seals of the ECU connector for waterproofing.
Silicone Sealant- Kawasaki Bond: 56019-120
If the wiring is good, check the sensor resistance.