Fuel Pump

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2003 Lexus SC 430, 2003 Lexus RX 300, 2003 Lexus LX 470, 2003 Lexus LS 430, and 2003 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

FUEL PUMP PERFORMANCE

Application

⁽¹⁾ Pressure psi (kg/cm² )

Except GX470 & LX470

44-50 (3.1-3.5)

GX470 & LX470

38-44 (2.7-3.1)

⁽¹⁾	Check fuel pressure with engine off. Using scan tool connected to DLC3 under driver's side of dashboard, turn ignition on to activate fuel pump. If scan tool is not available, connect battery voltage to terminal No. 4, and ground terminal No. 5 on electric fuel pump. See Fig 1.

Fig 1: Identifying Fuel Pump Terminals (ES300 Shown; Other Models Are Similar)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

FUEL PUMP RESISTANCE

Application

⁽¹⁾ Ohms @ 68°F (20°C)

All Models

.2-3.0

⁽¹⁾	Measure resistance between fuel pump terminals No. 4 and 5. See Fig 1.