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Home >> Mazda >> 1994 >> MX-5 Miata Base, Automatic >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Gauges & Instrument Panels >> System Testing >> Fuel Gauge Sending Unit

Fuel Gauge Sending Unit

WARNING: On vehicles with fuel-injected engine, relieve fuel pressure before servicing fuel system.
  1. Remove fuel gauge sending unit. Connect ohmmeter between the following wire terminals of fuel gauge sending unit connector:
    • Yellow and Black
  2. Measure resistance with fuel gauge sending unit float at specified position. See FUEL GAUGE SENDING UNIT RESISTANCE  . If resistance is not as specified, replace fuel gauge sending unit.
FUEL GAUGE SENDING UNIT RESISTANCE (1)

Float Position Ohms
Fully Raised 2.4-3.6
Three-Quarters 15.2-16.4
Mid-Range 31.8-33.2
One-Quarter 62.7-65.7
Fully Lowered 107.5-112.5
(1) Resistance values and float positions are approx.