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.
2013 Toyota Prius TwoFACTORY OEM SERVICE PROCEDURE
Service Data
| Spark plug | ||
| Spark plug type | DENSO made | SC20HR11 |
| Standard electrode gap | for new spark plug | 1.0 to 1.1 mm (0.0394 to 0.0433 in.) |
| Maximum electrode gap | for used spark plug | 1.3 mm (0.0512 in.) |
| Camshaft timing oil control valve assembly | ||
| Resistance | 1 - 2 | 6.9 to 7.9 Ω at 20°C (68°F) |
| Throttle body | ||
| Resistance | 2(M+) - 1(M-) | 0.3 to 100 Ω at 20°C (68°F) |
| 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) | |
| Crankshaft position sensor | ||
| Resistance | -10 to 50°C (14 to 122°F) | 1850 to 2450 Ω |
| Engine coolant temperature sensor | ||
| Resistance | 20°C (68°F) | 2.32 to 2.59 kΩ |
| 80°C (176°F) | 0.310 to 0.326 kΩ | |
| Knock sensor | ||
| Resistance | at 20°C (68°F) | 120 to 280 kΩ |
| Air fuel ratio sensor | ||
| Resistance | 1 (HA1A) - 2 (+B) | 1.6 to 3.2 Ω at 20°C (68°F) |
| 1 (HA1A) - 4 (A1A-) | 10 kΩ or higher | |
| Oxygen sensor | ||
| Resistance | 1 (HT1B) - 2 (+B) | 11 to 16 Ω at 20°C (68°F) |
| 1 (HT1B) - 4 (E2) | 10 kΩ or higher | |
| IG2 relay | ||
| Specified condition | (1C-1) - (1A-4) | 10 kΩ or higher |
| (1C-1) - (1A-4) | Below 1 Ω (when battery voltage is applied across terminals 1A-3 and 1A-2) | |
| EFI MAIN relay | ||
| Specified condition | (1C-1) - (1B-4) | 10 kΩ or higher |
| (1C-1) - (1B-4) | Below 1 Ω (when battery voltage is applied across terminals 1B-2 and 1B-3) | |
| C/OPN relay | ||
| Specified condition | (1B-5) - (1B-8) | 10 kΩ or higher |
| (1B-5) - (1B-8) | Below 1 Ω (when battery voltage is applied across terminals 1B-6 and 1B-7) | |
| BATT FAN relay | ||
| Specified condition | (1C-1) - (1A-8) | Below 1 Ω |
| (1C-1) - (1A-8) | 10 kΩ or higher (when battery voltage is applied across terminals 1A-7 and 1A-6) | |
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.
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