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.
2004 Lexus ES 330FACTORY OEM SERVICE PROCEDURE
Service Data
Identifying Service Data
| Camshaft timing oil control valve assy | ||
| Standard | VVT system is OFF (OCV is OFF) | Normal engine speed |
| VVT system is ON (OCV is ON) | Rough idle or engine stalled | |
| Resistance | 1(+) - 2(-) | 6.9 to 7.9Ω at 20°C(68°F) |
| Throttle body assy | ||
| Standard throttle valve opening percentage | 60 % or more | |
| Resistance | 1 (M-) - 2 (M+) | 0.3 to 100Ω at 20°C(68°F) |
| 3 (E2) - 5 (VC) | 1.2 to 3.2kΩ at 20°C(68°F) | |
| Accelerator pedal assy | ||
| Standard voltage | 0.6 to 1.0 V | |
| Resistance | 1 (EP2) - 5 (VPA1) | 5.0 kΩ or less |
| 2(VPA2) - 3(EP1) | 5.0 kΩ or less | |
| 3(EP1) - 6(VCP1) | 2.25 to 4.75 kΩ | |
| 1 (EP2) - 4 (VCP2) | 2.25 to 4.75 kΩ | |
| Mass air flow meter | ||
| Resistance | 4 (THA) - 5 (E2) | 13.6 to 18.4 kΩ at -20°C (-4°F) 2.21 to 2.69kΩ at 20°C(68°F) 0.493 to 0.667 kΩ at 60°C (140°F) |
| Engine coolant temperature sensor | ||
| Resistance | 1 (E2) - 2 (THW) | 2.32 to 2.59 kΩ at 20°C (68°F) 0.310 to 0.326 kΩ at 80°C (176°F) |
| Knock sensor | ||
| Resistance | 1 (Output) - 2 (Ground) | 120 to 280 Ω at 20°C (68°F) |
| Main relay | ||
| Resistance | 3 - 5 | 10 kΩ or higher |
| 3 - 5 (Apply battery voltage to terminals 1 and 2) | Below 1 Ω | |
| Circuit opening relay | ||
| Resistance | 3 - 5 | 10 kΩ or higher |
| 3 - 5 (Apply battery voltage to terminals 1 and 2) | Below 1 Ω | |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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