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.
2003 Lexus LS 430FACTORY OEM SERVICE PROCEDURE
Starter Relay Test: 2004
Measure resistance between specified terminals. For resistance specifications, see STARTER RELAY CONDITIONS . To identify starter relay terminal locations, see Figure
STARTER RELAY CONDITIONS
| Ohmmeter Connection | Resistance |
|---|---|
| Terminals No. 3 & 5 With No Battery Voltage Applied Through Terminals No. 1 & 2 | 10,000 Ohms Or More |
| Terminal No. 3 & 5 With Battery Voltage Applied Through Terminals No. 1 & 2 | Less Than One Ohm |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.