FUEL SYSTEM (DFI) 3-59

Vehicle-down Sensor (Service Code 31)

•Turn the ignition switch OFF.

•Remove the sensor.

•Connect a digital volt meter [A] to the connector with needle adapter set [B].

Special Tool - Needle Adapter Set: 57001–1457

•Hold the sensor vertically.

•Turn the ignition switch ON, and measure the output voltage with the connector joined.

○Tilt the sensor 60 ~ 70° or more [C] right or left, then hold the sensor almost vertical with the arrow mark pointed up, and measure the output voltage.

Output Voltage at Sensor

Standard: with sensor tilted 60 70° or more right or left: 3.7 4.4 V

with sensor arrow mark pointed up: 0.4

1.4 V

NOTE

○If you need to test again, turn the ignition switch OFF, and then ON.

•Turn the ignition switch OFF.

•Remove the needle adapter set, and apply silicone sealant to the seals of the connector for waterproofing.

Silicone Sealant (Kawasaki Bond: 56019–120) –

Seals of Vehicle-down Sensor Connector

If the output voltage is normal, the wiring is suspect.

Check the wiring.

If the wiring is good, check the ECU for its ground and power supply (see ECU section).

If the output voltage is out of the specified, replace the vehicle-down sensor.

3-60 FUEL SYSTEM (DFI)

Vehicle-down Sensor (Service Code 31)