Fuel Sender Gauge

WARNING: This page is about a different car, the 2003 Lexus RX 300 and 2002 Lexus RX 300. However, it is still accessible from the selected car via links, so may be relevant.

Main Sender Inspection - Measure the resistance between terminals No. 1 and 2 for each float position. See Fig 1. See INSPECTING FUEL MAIN SENDER GAUGE RESISTANCE table. If resistance value is not as specified, replace the main sender gauge.

INSPECTING FUEL MAIN SENDER GAUGE RESISTANCE

Float Position mm (in.)	Resistance (Ohms)
F: Approx. 23.6-29.6 (0.927-1.167)	Approx. 1-3
E: Approx. 135.9-141.9 (5.348-5.588)	Approx. 37.7-39.7

Sub Sender Inspection - Measure the resistance between terminals No. 1 and 2 for each float position. See Fig 2. See INSPECTING FUEL SUB SENDER GAUGE RESISTANCE table. If resistance value is not as specified, replace the sub sender gauge.

INSPECTING FUEL SUB SENDER GAUGE RESISTANCE

Float Position In. (mm)	Resistance (Ohms)
F: Approx. -0.026-0.214 (-0.6-5.4)	Approx. 1-3
E: Approx. 174.2-180.2 (6.856-7.096)	Approx. 70.3-72.3

Fig 1: Testing Main Fuel Gauge Sending Unit

Fig 2: Testing Sub Fuel Gauge Sending Unit