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.
2007 Toyota Sienna CEFACTORY OEM SERVICE PROCEDURE
Service Data
ENGINE CONTROL SERVICE DATA REFERENCE CHART
| Mass air flow meter | ||
| Resistance | 1 (THA) - 2 (E2) | 13.6 to 18.4 kΩ at -20°C (-4°F) |
| 1 (THA) - 2 (E2) | 2.21 to 2.69 kΩ at 20°C (68°F) | |
| 1 (THA) - 2 (E2) | 0.49 to 0.67 kΩ at 60°C (140°F) | |
| Camshaft timing oil control valve assembly | ||
| Resistance | at 20°C (68°F) | 6.9 to 7.9 Ω |
| Crankshaft position sensor | ||
| -10 to 50°C (14 to 122°F) | 1, 630 to 2, 740 Ω | |
| 50 to 100°C (122 to 212°F) | 2, 065 to 3, 225 Ω | |
| Throttle body | ||
| Resistance | at 20°C (68°F) | |
| 2 (M+) -1 (M-) | 0.3 to 100 kΩ | |
| Engine coolant temperature sensor | ||
| Resistance | Approx. 20°C (68°F) | 2.32 to 2.59 kΩ |
| Approx. 80°C(176°F) | 0.310 to 0.326 kΩ | |
| Knock sensor | ||
| Resistance | at 20°C (68°F) | 120 to 280 kΩ |
| Circuit opening relay | ||
| Specified condition | 3-5 | 10 kΩ or higher |
| 3-5 | Below 1 Ω (when battery voltage is applied to terminals 1 and 2) | |
| EFI relay | ||
| Specified condition | 3-5 | 10 kΩ or higher |
| 3-5 | Below 1 Ω (when battery voltage is applied to terminals 1 and 2) | |
| Air fuel ratio sensor relay | ||
| Specified condition | 3-5 | 10 kΩ or higher |
| 3-5 | Below 1 Ω (when battery voltage is applied to terminals 1 and 2) | |
| Acceleration pedal rod | ||
| Standard voltage (ACCEL POS #1) | Released | 0.5 to 1.1 V |
| Depressed | 2.5 to 4.5 V | |
| Standard voltage (ACCEL POS #2) | Released | 1.2 to 2.0 V |
| Depressed | 3.4 to 5.0 V | |
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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