LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2005 >> IS 300 Base, Automatic >> Repair and Diagnosis >> Engine Performance >> Specifications >> SFI System - Service Specifications >> SFI System >> Service Data
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Service Data

SERVICE DATA - SFI

Fuel pump Resistance at 20°C (68°F) 0.2 - 3.0 Ω
Fuel pressure regulator Fuel pressure 304 - 343 kPa (3.1 - 3.5 kgf/cm2 , 44 - 50 psi)
Injector Resistance at 20°C (68°F) 13.4 - 14.2 Ω
Injection volume 60 - 73 cm3 (3.7 - 4.5 cu in.) per 15 sec.
Difference between each cylinder 13 cm3 (0.8 cu in.) or less
Fuel leakage 1 drop or less per 12 min.
MAF meter Resistance (THA - E2) at -20°C (-4°F) 13.6 - 18.4kΩ
at 20°C (68°F) 2.21 - 2.69 kΩ
at 60°C (140°F) 0.493 - 0.667 kΩ
Throttle body Throttle body fully closed angle 3.5°
Throttle control motor Motor (M+ - M-) at 20°C (68°F) 0.3 - 100 Ω
Clutch (CL+- CL-) at 20°C (68°F) 4.2 - 5.2 Ω
Throttle position sensor Resistance (VC - E2) at 20°C (68°F) 1.2 - 3.2 kΩ
Throttle valve opening percentage STD 14.8 ± 0.8 %
Accelerator pedal position sensor Resistance (VC - E2) at 20°C (68°F) 1.2 - 3.2 kΩ
Accelerator pedal position voltage STD 0.3 - 0.9 V
Camshaft timing oil control valve Resistance at 20°C (68°F) 5.5 - 12 Ω
Fuel pump resister Resistance at 20°C (68°F) 0.30 - 0.35 Ω
VSV for EVAP Resistance at 20°C (68°F) 27 - 33 Ω
VSV for ACIS Resistance at 20°C (68°F) 38.5 - 44.5 Ω
VSV for CCV Resistance at 20°C (68°F) 24 - 30 Ω
VSV for pressure switching valve Resistance at 20°C (68°F) 37 - 44 Ω
at 120°C (248°F) 51 - 62 Ω
ECT sensor Resistance at -20°C (-4°F) 10 - 20 kΩ
0°C (32°F) 4 - 7 kΩ
20°C (68°F) 2 - 3 kΩ
40°C (104°F) 0.9 - 1.3 kΩ
60°C (140°F) 0.4 - 0.7 kΩ
80°C (176°F) 0.2 - 0.4 kΩ
Vapor pressure sensor Power sorce voltage 4.5 - 5.5 V
Heated oxygen sensor Heater coil resistance at 20°C (68°F) 11 - 16 Ω
at 800°C (1, 472°F) 23 - 32 Ω
Fuel cut rpm   Fuel return rpm 1, 000 rpm
EFI main relay Resistance 3 - 5 10 kΩ or higher
3 - 5 (Apply battery voltage to terminal 1 and 2) Below 1 Ω
Circuit opening relay Resistance 3 - 5 10 kΩ or higher
3 - 5 (Apply battery voltage to terminal 1 and 2) Below 1 Ω