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 GS 430FACTORY OEM SERVICE PROCEDURE
Service Data
SERVICE DATA
| Starter relay | 3 - 5 Specified resistance 10 MΩ or higher (when battery voltage is applied to terminals 1 and 2) |
| Starter cut relay | 3 - 5 Specified resistance 10 MΩ or higher (when battery voltage is applied to terminals 1 and 2) |
| Engine switch | 7 (SS1) - 5 (GND) / 2 (SS2) - 5 (GND) Specified resistance Not pushed: 10 kΩ or higher Pushed: Below 1 Ω |
| Measurement condition Battery positive 11 (SWIL) - Battery negative 4 (COM) or 5 (GND) Battery positive 12 (INDS) - Battery negative 4 (COM) or 5 (GND) Battery positive 13 (INDW) - Battery negative 4 (COM) or 5 (GND) |
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| Starter armature assembly | |
| Segments of the commutator | Standard resistance: Below 1 Ω |
| Commutator and armature coil core | Standard resistance: 10 kΩ or higher |
| Commutator circle runout | Maximum commutator's runout: 0.05 mm (0.002 in.) |
| Commutator diameter | Standard diameter: 35.0 mm (1.378 in.) Minimum diameter: 34.0 mm (1.339 in.) |
| Undercut depth of the commutator | Standard depth: 0.7 mm (0.028 in.) Minimum depth: 0.2 mm (0.008 in.) |
| Starter yoke assembly | |
| Lead wire and field coil brush lead | Standard resistance: Below 1 Ω |
| Shunt coil | Standard resistance: 1.5 to 1.9 Ω at 20°C (68°F) |
| Brush | |
| Brush length | Standard length: 15.0 mm (0.591 in.) Minimum length: 9.0 mm (0.354 in.) |
| Starter brush holder assembly | |
| Positive (+) and negative (-) brush holder | Standard resistance: 10 kΩ or higher |
| Load of the brush spring | Standard load: 21.5 to 27.5 N (2.2 to 2.8 kgf, 4.9 to 6.2 lbf) Minimum load: 12.7 N (1.3 kgf, 2.9 lbf) |
| Magnet starter switch assembly | |
| `Pull-in coil | Standard resistance: Below 1 Ω |
| Hold-in coil | Standard resistance: Below 2 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.