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 Lexus IS 250 RWD, AutomaticFACTORY OEM SERVICE PROCEDURE
Service Data
4GR-FSE ENGINE CONTROL SYSTEM SERVICE DATA SPECIFICATION
| Throttle body | ||
| Standard throttle valve opening percentage | 60% or more | |
| Camshaft timing oil control valve assembly | ||
| Resistance at | 20°C (68°F) 6.9 to 7.9 ohms | - |
| Throttle body assembly | ||
| Resistance | at 20°C (68°F) | - |
| M+ (2) - M- (1) | 0.3 to 100 k ohms | |
| VC (5) - E2 (3) | 1.2 to 3.2 k ohms | |
| E.F.I engine coolant temperature sensor | ||
| Resistance | Approx. 20°C (68°F) 2.32 to 2.59 k ohms | - |
| Approx. 80°C (176°F) 0.310 to 0.326 k ohms | - | |
| Knock sensor | ||
| Resistance | at 20°C (68°F) | 120 to 280 k ohms |
| INTEGRATION RELAY (C/OPEN relay) | ||
| Specified condition | 2B-5 - 2B-8 | 10 k ohms or higher |
| 2B-7 - 2B-8 | Battery voltage | |
| INTEGRATION RELAY (EFI relay) | ||
| Specified condition | EFI fuse terminal 2 - 2A-8 | 10 k ohms or higher |
| EFI fuse terminal 2 - 2A-8 | Below 1 ohms | |
| INTEGRATION RELAY (EFI 2 relay) | ||
| Specified condition | F/PMP fuse terminal 2 - 2B-4 | 10 k ohms or higher |
| F/PMP fuse terminal 2 - 2B-4 | Below 1 ohms | |
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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