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Home >> Mazda >> 1989 >> 626 Base >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel - Electronic >> Component Testing >> Fuel Gauge Sending Unit

Fuel Gauge Sending Unit

Disconnect fuel gauge sending unit connector. Remove fuel gauge sending unit from fuel tank. Connect an ohmmeter between connector terminal "B" and ground. See Fig 1 . Move float to various positions indicated and check resistance readings against SENDING UNIT RESISTANCE SPECIFICATIONS table. If resistance is not as specified, replace fuel gauge sending unit.

Fig 1: Locating Fuel Gauge Sending Unit "B" Terminals
G90C01270Courtesy of MAZDA MOTORS CORP.
SENDING UNIT RESISTANCE SPECIFICATIONS

Application & Float Position Resistance Range (Ohms)
MX-6 & 626 Except 4WS
Fully Raised 1-5
Mid-Range 29-37
Fully Lowered 103-117
MX-6 & 626 With 4WS
Fully Raised 0-2.5
Mid-Range 15-23
Fully Lowered 50-60