2001 Lexus ES 300FACTORY OEM SERVICE PROCEDURE

Fuel Pump Operation (Using Lexus Scan Tool)

  1. Connect Lexus scan tool to Data Link Connector (DLC) No. 3. See Figure or Figure. Turn ignition on. Turn scan tool on. DO NOT start engine.
  2. Select ACTIVE TEST mode on scan tool. Using Lexus scan tool manufacturer's instructions, activate electric fuel pump. Observe pulsation damper at rear of fuel rail. Pulsation damper screw will rise if fuel pressure is present. Also, fuel pump operating sound can be heard or pulsations can be felt in fuel line near fuel rail if fuel pump is operating.
  3. If fuel pump does not operate, check for faulty fusible link/fuses. See appropriate wiring diagram in WIRING DIAGRAMS article. Check for faulty EFI main relay in fuse/relay box at left front of engine compartment. Check for faulty fuel pump, ECM or poor wiring connections.
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.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.