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3-18 FUEL SYSTEM (DFI)
Specifications
Item Standard
Digital Fuel Injection System
Idle Speed 1 100 ±50 r/min (rpm)
Throttle Body Assy:
Throttle Valve Dual throttle valve
Bore 38 mm (1.42 in.)
Throttle Body Vacuum 40.7 ±1.3 kPa (305 ±10 mmHg)
Bypass Screws (Turn Out) 2 1/2 (for reference)
ECU:
Make DENSO
Type Digital memory type, with built in IC igniter, sealed
with resin
Fuel Pressure (High Pressure Line) 294 kPa (3.0 kgf/cm², 43 psi) with engine idling
Fuel Pump:
Type In-tank friction pump
Discharge 50 mL (1.7 US oz.) or more for 3 seconds
Fuel Injectors:
Type INP-289
Nozzle Type Fine atomizing type with 8 holes
Resistance About 11.7 ∼ 12.3 Ω at 20°C (68°F)
Main Throttle Sensor:
Input Voltage DC 4.75 ∼ 5.25 V
Output Voltage DC 1.02 ∼ 1.06 V at idle throttle opening
DC 4.22 ∼ 4.42 V at full throttle opening (for reference)
Resistance 4 ∼ 6kΩ
Intake Air Pressure Sensor #1/Intake Air
Pressure Sensor #2:
Input Voltage DC 4.75 ∼ 5.25 V
Output Voltage DC 3.80 ∼ 4.20 V at standard atmospheric pressure
(see this text for details)
Intake Air Temperature Sensor:
Output Voltage About DC 2.25 ∼ 2.50 V at 20°C (68°F)
Resistance 5.4 ∼ 6.6 kΩ at 0°C (32°F)
0.29 ∼ 0.39 kΩ at 80°C (176°F)
Water Temperature Sensor:
Output Voltage About DC 2.80 ∼ 2.97 V at 20°C (68°F)
Speed Sensor:
Input Voltage About DC 9 ∼ 11 V
Output Voltage Less than DC 0.6 V or Over than 4.8 V at ignition
switch ON and 0 km/h
Vehicle-down Sensor:
Input Voltage DC 4.75 ∼ 5.25 V
Output Voltage With sensor tilted 60 ∼ 70° or more right or left: DC
0.65 ∼ 1.35 V
With sensor arrow mark pointed up: DC 3.55 ∼ 4.45 V
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