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Home >> Mazda >> 1998 >> Protege DX, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Component Tests >> Fuel Gauge Sending Unit Test

Fuel Gauge Sending Unit Test

WARNING: 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.
    • Green/Yellow wire or Black/Red wire, and Red wire (Millenia).
    • Red wire and Black wire (MPV).
    • Gray wire and Black/Orange wire (Protege).
  2. Measure resistance with fuel gauge sending unit float in specified position. See FUEL GAUGE SENDING UNIT RESISTANCE table. If resistance is not as specified, replace fuel gauge sending unit.
FUEL GAUGE SENDING UNIT RESISTANCE(1)

Float Position Ohms
Millenia
Sending Unit No. 1. (Round Float)
Fully Raised 1.5
Fully Lowered 69.3
Sending Unit No. 2. (Angular Float)
Fully Raised 1.5
Fully Lowered 25.2
MPV & Protege
Fully Raised 1-5
Fully Lowered 103-117
(1) Resistance values and float positions are approximate.