1995 Lexus LS 400FACTORY OEM SERVICE PROCEDURE

Fuel Pump Operation (Using DLC No. 1)

CAUTION: To prevent fuel pump damage, DO NOTΒ  operate fuel pump for more than 10 seconds.

Connect Jumper Wire (09843-18020) between terminals +B and FP of DLC No. 1. See Fig 1. See COMPONENT LOCATIONSΒ  under INTRODUCTION N. Turn ignition on, engine off. Fuel pump is operating if pulsations can be felt in fuel pressure hose or if noise from fuel return can be heard.

Fig 1: Identifying Terminals Of Data Link Connector (DLC) No. 1
G94G45282Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
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:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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