Accord Sedan L4-2.2L SOHC (16 Valve) (1996)
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Fuel Gauge: Description and Operation
When the ignition switch is on ON (II) or START (III), battery voltage is supplied through fuse 1 to the gauges in the gauge assembly. The gauge circuit
is grounded at G404.
Engine Coolant Temperature (ECT) Gauge and Fuel Gauge
The Engine Coolant Temperature (ECT) gauge has two intersecting coils wound around a permanent magnet rotor. Voltage applied to the coils,
through fuse 1, generates a magnetic field. The magnetic field, controlled by the engine coolant temperature (ECT) sending unit, causes the rotor
to rotate and the gauge needle to move. As the resistance in the sending unit varies, current through the gauge coils changes, pulling the gauge
needle toward the coil with the stronger magnetic field. The fuel gauge works the same way.
The resistance of the sending unit for the engine coolant temperature (ECT) gauge varies from about 137 ohms at low engine temperature to
between 30-46 ohms at high engine temperature (radiator fan running).
The resistance of the sending unit for the engine coolant temperature (ECT) gauge varies from about 137 ohms at low engine temperature to
between 30-46 ohms at high temperature (radiator fan running). The resistance of the sending unit for the fuel gauge varies from about 2-5 ohms
at full, to about 110 ohms at empty. When you turn the ignition switch to LOCK (0), the gauge remains at the last reading until you turn the
ignition switch to ON (II) or START (III) again.
