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Home >> Mazda >> 1994 >> 323 1.6 2, Automatic >> Repair and Diagnosis >> Electrical >> Gauges >> Instrument Panel >> 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 3
Mid-Range 33
Fully Lowered 110
(1) Resistance values and float positions are approx.

Ensure oil pressure is okay. Disconnect oil pressure sensor/switch connector. Measure resistance between oil pressure sensor/switch connector terminal and body ground. See OIL PRESSURE SENSOR/SWITCH RESISTANCE table. If resistance is not as specified, replace oil pressure sensor/switch.