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3-10 FUEL SYSTEM (DFI)
Specifications
Item Standard
Digital Fuel Injection System
Idle Speed 1 300 ±100 r/min (rpm) -both in and out of water
Throttle Assy:
Type
Single type
Bore 60 mm (2.36 in.)
ECU (Electronic Control Unit):
Make Mitsubishi Electric
Type
Digital memory type, with built in IC igniter, sealed with
resin
Operating range Engine speed range 100 ∼ 8 100 r/min (rpm)
Fuel Pressure (High Pressure Line):
Engine Idling approx. 294 kPa (3.0 kgf/cm², 43 psi)
Fuel Pump:
Type Impeller type
Discharge 67 mL or more for 3 seconds
Throttle Sensor:
Input Voltage 4.75 ∼ 5.25 V DC between R and BK/W leads
Output Voltage 1.08 ∼ 1.18 V DC between G/W and BK/W leads (at idle
throttle opening)
Resistance 4 ∼ 6kΩ
Inlet Air Pressure Sensor:
Input Voltage 4.75 ∼ 5.25 V DC between R and BK/W leads
Output Voltage 3.75 ∼ 4.25 V DC between G/R and BK/W leads at standard
atmospheric pressure
Inlet Air Temperature Sensor:
Output Voltage at ECU about 2.3 ∼ 2.6 V @20°C (68°F)
Resistance 5.4 ∼ 6.6 kΩ at 0°C (32°F)
2.26 ∼ 2.86 kΩ at 20°C (68°F)
0.29 ∼ 0.39 kΩ at 80°C (176°F)
Water Temperature Sensor:
Resistance see Electrical System chapter
Output Voltage at ECU about 3 ∼ 4 V @20°C (68°F)
Vehicle-down Sensor:
Detection Method
Magnetic flux detection method
Detection A
ngle
more than 110 ∼ 130° for each bank
Output Voltage
with sensor tilted 110 ∼ 130° or more: 0.65∼ 1.35 V
with sensor arrow mark pointed up: 3.55 ∼ 4.45 V
Fuel Injectors:
Type INP-281
Nozzle Type One spray type with 4 holes
Resistance about 11.7 ∼ 12.3 Ω at 20°C (68°F)
Oil Temperature Sensor:
Resistance same to water temperature sensor
Output Voltage at ECU about 3 ∼ 4 V @20°C (68°F)