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.
2015 Lexus ES 350FACTORY OEM SERVICE PROCEDURE
Service Data [08/2014 - ]
| Spark plug | ||
| Spark plug type | DENSO made | FK20HR11 |
| 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 | 1.4 mm (0.0551 in.) |
| Camshaft timing oil control valve assembly | ||
| Resistance | at 20°C (68°F) | 6.9 to 7.9 Ω |
| Throttle body | ||
| Resistance | 2 (M+) - 1 (M-) | 0.3 to 100 Ω at 20°C (68°F) |
| Vacuum switching valve (for Engine Mounting) | ||
| Resistance | at 20°C (68°F) | 19 to 21 Ω |
| Acceleration pedal sensor | ||
| Standard voltage (Accelerator Position No. 1) | Released | 0.5 to 1.1 V |
| Depressed | 2.6 to 4.5 V | |
| Standard voltage (Accelerator Position No. 2) | Released | 1.2 to 2.0 V |
| Depressed | 3.4 to 4.8 V | |
| 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 | Cold | 1630 to 2740 Ω |
| Hot | 2065 to 3225 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 for Bank 1 |
1 (HA1A) - 2 (+B) | 1.6 to 3.2 Ω at 20°C (68°F) |
| 1 (HA1A) - 4 (A1A-) | 10 kΩ or higher | |
| Resistance for Bank 2 |
1 (HA2A) - 2 (+B) | 1.6 to 3.2 Ω at 20°C (68°F) |
| 1 (HA2A) - 4 (A2A-) | 10 kΩ or higher | |
| Oxygen sensor | ||
| Resistance (for Bank 1 Sensor 2) |
1 (HT1B) - 2 (+B) | 11 to 16 Ω at 20°C (68°F) |
| 1 (HT1B) - 4 (E2) | 10 kΩ or higher | |
| Resistance (for Bank 2 Sensor 2) |
1 (HT2B) - 2 (+B) | 11 to 16 Ω at 20°C (68°F) |
| 1 (HT2B) - 4 (E2) | 10 kΩ or higher | |
| EFI MAIN relay | ||
| Specified Condition | No. 1 integration relay 1B-1 - No. 1 integration relay 1A-8 | Battery voltage is not applied between terminals 1C-7 and 1E-2 10 kΩ or higher |
| No. 1 integration relay 1B-1 - No. 1 integration relay 1A-8 | Battery voltage is applied between terminals 1C-7 and 1E-2 Below 1 Ω |
|
| No. 1 integration relay 1B-1 - No. 1 integration relay 1C-3 | ||
| No. 1 integration relay 1B-1 - No. 1 integration relay 1C-4 | ||
| No. 1 integration relay 1B-1 - No. 1 integration relay 1C-6 | ||
| No. 1 integration relay 1B-1 - No. 1 integration relay 1C-9 | ||
| No. 1 integration relay 1B-1 - No. 1 integration relay 1C-10 | ||
| A/F HTR relay | ||
| Specified Condition | No. 1 integration relay 1A-6 - No. 1 integration relay 1D-1 | Battery voltage is not applied between terminals 1A-8 and 1E-2 10 kΩ or higher |
| No. 1 integration relay 1A-6 - No. 1 integration relay 1D-1 | Battery voltage is applied between terminals 1A-8 and 1E-2 Below 1 Ω |
|
| No. 1 integration relay 1A-7 - No. 1 integration relay 1D-1 | ||
| IG2 relay | ||
| Specified Condition | No. 1 integration relay 1A-1 - No. 1 integration relay 1D-3 | Battery voltage is not applied between terminals 1C-8 and 1E-2 10 kΩ or higher |
| No. 1 integration relay 1A-1 - No. 1 integration relay 1D-3 | Battery voltage is applied between terminals 1C-8 and 1E-2 Below 1 Ω |
|
| No. 1 integration relay 1A-3 - No. 1 integration relay 1D-3 | ||
| No. 1 integration relay 1A-5 - No. 1 integration relay 1D-3 | ||
| No. 1 integration relay 1C-1 - No. 1 integration relay 1D-3 | ||
| No. 1 integration relay 1C-2 - No. 1 integration relay 1D-3 | ||
| No. 1 integration relay 1C-5 - No. 1 integration relay 1D-3 | ||
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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