Kawasaki STX-15F - Manual (Page 100)

3-46 FUEL SYSTEM (DFI)
Vehicle-down Sensor (Service Code/Character-31/dOS)
•
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 Power Supply Inspection). If the
ground and power supply are good, replace the ECU.
If the output voltage is out of the specified, replace the
vehicle-down sensor.
1. ECU
2. Joint Connector E
3. Connector C
4. Vehicle-down Sensor