FUEL SYSTEM (DFI) 3-11
DFI Wiring Diagram
Terminal Names
1. Power Supply to Sensors
2. Main Throttle Sensor Signal
3. Subthrottle Sensor Signal
4. Atmospheric Pressure Sensor Signal
5. Water Temperature Sensor Signal (+)
6. Unused
7. Ignition Switch Signal
8. Unused
9. Camshaft Position Sensor Signal (+)
10. Unused
11. Crankshaft Sensor Signal (+)
12. Unused
13. Power Supply to ECU, Injectors, and Fuel Pump
14. Ground to sensors
15. Unused
16. Vehicle-down Sensor Signal
17. Inlet Air Pressure Sensor Signal
18. Inlet Air Temperature Sensor Signal (+)
19. Unused
20. Speed Sensor Signal
21. Unused
22. Camshaft Position Sensor Signal (–)
23. Unused
24. Crankshaft Sensor Signal (–)
25. Unused
26. ECU Power Source Circuit Ground to Battery (–) Terminal
27.Engine Stop Switch Signal
28.Starter Lockout Switch Signal
29.Electric Starter Button Signal
30.Fuel Pump Relay Signal
31.Subthrottle Valve Actuator Drive Signal
32.Subthrottle Valve Actuator Drive Signal
33.Unused
34.Tachometer Signal
35.Injector #2 Signal
36.Injector #1 Signal
37.Stick Coil #3 Signal
38.Stick Coil #2 Signal
39.Stick Coil #1 Signal
40.Interlock Circuit Signal
41.Self-diagnosis Signal (generated by grounding this terminal and shown by FI indicator LED light)
42.Unused
43.Battery Power ON-OFF Signal
44.Subthrottle Valve Actuator Drive Signal
45.Subthrottle Valve Actuator Drive Signal
46.External Diagnosis System Signal
47.FI Indicator LED Light Signal
48.Injector #4 Signal
49.Injector #3 Signal
50.DFI System Ground
51.Ignition System Ground
52.Stick Coil #4 Signal
Part Name |
T. Ignition Switch |
A. ECU (Electronic Control Unit) |
U. FI Indicator LED Light |
B. Crankshaft Sensor |
V. Tachometer |
C. Inlet Air Pressure Sensor |
W. Speedometer |
D. Water Temperature Sensor |
X. Ignition Fuse 10 A |
E. Atmospheric Pressure Sensor |
Y. Junction Box |
F. Inlet Air Temperature Sensor |
Z. Fuel Pump Relay |
G. Camshaft Position Sensor |
a. ECU Fuse 15 A |
H. Speed Sensor |
b. Vehicle-down Sensor |
I. Main Throttle Sensor |
d. Starter Relay |
J. Subthrottle Sensor |
e. Joint Connector C |
K. Injectors #1, #2, #3, #4 |
f. Sealed Battery |
L. Subthrottle Valve Actuator |
g. Fuel Pump |
M. Stick Coils #1, #2, #3, #4 |
h. Self-diagnosis Terminal |
N. Engine Stop Switch |
j. Joint Connector B |
O. Joint Connector D |
k. Main Fuse 30 A |
P. see Electrical System chapter |
m. Throttle Body Assy Connector |
Q. Ground Terminal |
n: Connector Locks |
R. Ground Terminal |
p: ECU Connector |
S. ECU Main Relay |
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3-12 FUEL SYSTEM (DFI)
Specifications
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Standard |
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Digital Fuel Injection System |
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Idle Speed |
1 100 ±50 r/min (rpm) |
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Throttle Assy: |
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Type |
Four barrel type |
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Bore |
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34 mm (1.34 in.) |
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ECU (Electronic Control Unit): |
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Make |
Denso |
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Type |
Digital memory type, with built in IC igniter, sealed with resin |
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Usable engine speed |
100 |
12 240 r/min (rpm) |
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Fuel Pressure (high pressure line): |
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Right after Ignition SW ON |
310 kPa (3.2 kgf/cm², 46 psi) with fuel pump running |
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After 3 sec from Ignition SW ON |
290 kPa (2.9 kgf/cm², 43 psi) with fuel pump stopped |
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With engine idling |
310 kPa (3.2 kgf/cm², 46 psi) with fuel pump running |
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Fuel Pump: |
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Type |
In-tank friction pump |
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Discharge |
67 mL or more for 3 seconds |
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Fuel Injectors: |
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Type |
INP-285 |
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Nozzle type |
One spray type with 4 holes |
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Resistance |
about 11.7 12.3 Ω at 20°C (68°F) |
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Main Throttle Sensor: |
Non-adjustable and non-removable |
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Input voltage |
4.75 |
5.25 V DC between BL and BR/BK leads |
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Output voltage at idle throttle |
0.99 |
1.03 V DC between Y/W and BR/BK leads |
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opening |
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Output voltage at full throttle |
4.19 |
4.39 V DC between Y/W and BR/BK leads |
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opening |
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Resistance |
4 6 kΩ |
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Inlet Air Pressure Sensor or |
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Atmospheric Pressure Sensor: |
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Input voltage |
4.75 |
5.25 V DC between BL and BR/BK leads |
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Output voltage |
3.74 |
4.26 V DC at standard atmospheric pressure (see |
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this text for details) |
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Inlet Air Temperature Sensor: |
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Resistance |
1.6 |
3.7 kΩ at 20°C (68°F) |
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0.24 |
0.43 kΩ at 80°C (176°F) |
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Output voltage at ECU |
about 2.25 2.50 V @20°C (68°F) |
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Water Temperature Sensor: |
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Resistance |
see Electrical System chapter |
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Output voltage at ECU |
about 2.80 2.97 V @20°C (68°F) |
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Speed Sensor: |
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Input voltage at sensor |
about 9 11 V DC at Ignition SW ON |
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Output voltage at sensor |
about 0.05 0.07 V DC at Ignition SW ON and 0 km/h |
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Vehicle-down Sensor: |
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Detection method |
Magnetic flux detection method |
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Detection angle |
More than 60 70° for each bank |
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FUEL SYSTEM (DFI) 3-13 |
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Specifications |
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Item |
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Standard |
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Detection time |
Within 0.5 1.0 sec. |
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Output voltage |
with the sensor tilted 60 70° or more: 3.7 4.4 V |
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with sensor arrow mark pointed up: 0.4 1.4 V |
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Subthrottle Sensor: |
Non-adjustable and non-removal |
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Input voltage |
4.75 |
5.25 V DC between BL and BR/BK leads |
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Output voltage at idle throttle |
0.48 |
0.52 V DC between BR and BR/BK leads |
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opening |
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Output voltage at full throttle |
3.6 |
3.8 V DC between BR and BR/BK leads |
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opening |
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Resistance |
4 |
6 kΩ |
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Subthrottle Valve Actuator: |
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Resistance |
about 5 7 kΩ |
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Input voltage |
about 8.5 10.5 V DC |
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Throttle Grip and Cables |
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Throttle grip free play |
2 |
3 mm (0.08 |
0.12 in.) |
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Choke Cable |
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Choke cable free play |
0 |
0.5 mm (0 |
0.02 in.) |
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3-14 FUEL SYSTEM (DFI)
Special Tools
Oil Pressure Gauge: |
Needle Adapter Set: |
57001–125 |
57001–1457 |
Fork Oil Level Gauge: 57001–1290
Throttle Sensor Setting Adapter: 57001–1538
Hand Tester: 57001–1394
Sensor Harness Adapter: 57001–1561
Throttle Sensor Setting Adapter: 57001–1400
Kawasaki Bond (Silicone Sealant): 56019–120
Fuel Pressure Gauge Adapter: 57001–1417