Kawasaki Z1000 Motorcycle User Manual


 
3-50 FUEL SYSTEM (DFI)
Water Temperature Sensor (Service Code 14)
Removal/Installation
CAUTION
Never drop the sensor, especially on a hard surface.
Such a shock to the sensor can damage it.
Remove the fuel tank (see Fuel Tank Removal).
Drain t
he coolant about 200 mL (6.76 US oz).
Disconnect the sensor connector, and unscrew the water
temperature sensor [A].
Front
[B]
Torque - Water Temperature Sensor: 25 N·m (2.5 kgf·m, 18
ft·lb)
Fill the engine with coolant and bleed the air from the cool-
ing system (see Coolant Change in the Periodic Mainte-
nance chapter).
Output Voltage Inspection
NOTE
Be sure the battery is fully charged.
Remove the ECU (see this chapter). Do not disconnect
the connectors.
Connect a digital voltmeter [A] to the ECU connector [B]
with the needle adapter set.
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.
Water Temperature Sensor Output Voltage
Connections to ECU
Meter (+) O lead (terminal 5)
Meter (–) BR/BK lead (terminal 14)
Standard: about 2.80 2.97 V at 20°C (68°F)
NOTE
The output voltage changes according to the coolant
temperature in the engine.
Turn the i gnition switch OFF.
If the output voltage is within the standard, check the ECU
for its ground, and power supply ( see this chapter).
If the output voltage is out of the standard, remove the
fuel tank and check the wiring. And if the output voltage
is 4.8 V, the ECU is normal.
If the wiring i s good, check the water temperature sensor
resistance.
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 ECU Connectors