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.
2006 Lexus IS 350FACTORY OEM SERVICE PROCEDURE
On-Vehicle Inspection
- INSPECT FUEL PUMP RELAY (Marking: F/PMP)
- Remove the No. 2 relay block cover.
- Remove the fuel pump from the engine room No. 2 junction block.
- Measure the fuel pump relay resistance.
Standard resistance
RESISTANCE SPECIFICATIONTester Condition Specified Condition 1 - 2 63 to 91 Ω 3 - 5 Below 1 Ω 3 - 5 10 kΩ or higher (when battery voltage is applied to terminals 1 and 2) - Reinstall the fuel pump relay to the engine room No. 2 relay block.
- Reinstall the No. 2 junction block cover.
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.
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