Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2005 Lexus GS 430FACTORY OEM SERVICE PROCEDURE
Service Data
SFI System Service Data Chart (3UZ-FE)
| Fuel pressure regulator | Fuel pressure | 304 - 343 kPa (3.1 - 3.5 kgf/cm2 , 44 - 50 psi) | |
| Fuel pump | Resistance | at 20°C (68°F) | 0.2 - 3.0 Ω |
| 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 seconds | ||
| Difference between each cylinder | 13 cm3 (0.8 cu in.) or less | ||
| Fuel leakage | 1 drop or less per 12 minutes | ||
| Air flow meter | Resistance (THA - E2) | at -20°C (-4°F) | 13.6 - 18.4 kΩ |
| at 20°C (68°F) | 2.21 - 2.69 kΩ | ||
| at 60°C (140°F) | 0.49 - 0.67 kΩ | ||
| Throttle body | Throttle body fully closed angle | 4° | |
| Throttle position sensor | Resistance (VC - ETA) | at 20°C (68°F) | 1.25 - 2.35 kΩ |
| Accelerator pedal position sensor | Resistance (Vcp1 - Ep1 ), (Vcp2 - Ep2 ) | at 20°C (68°F) | 1.5 - 6.0 kΩ |
| Throttle control motor | Motor resistance | at 20°C (68°F) | 0.3 - 100 Ω |
| Camshaft timing oil control valve | Resistance | at 20°C (68°F) | 6.9 - 7.9 Ω |
| VSV for EVAP | Resistance | at 20°C (68°F) | 30 - 34 Ω |
| VSV for ACIS | Resistance | at 20°C (68°F) | 33 - 39 Ω |
| VSV for canister closed valve (CCV) | Resistance | at 20°C (68°F) | 24 - 30 Ω |
| VSV for pressure switching valve | Resistance | at 20°C (68°F) | 33 - 39 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 source voltage | 4.5 - 5.5 V | |
| Heated oxygen sensor | Heater coil resistance | at 20°C (68°F) | 11 - 16 Ω |
| VVT sensor | Resistance | Cold | 835 - 1, 400 Ω |
| Hot | 1, 060 - 1, 645 Ω | ||
| Fuel cut rpm | Fuel return rpm | 1, 400 rpm | |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.