Mitsubishi Electric Lancer Evolution-VII Workshop Manual page 252

METER AND GAUGE (See P.B-148,152.)
OPERATION
<Fuel gauge>
When the ignition switch is at the "ON" position,
D
the fuel gauge is activated.
When there is much fuel, the unit's resistance
D
is small and the current flowing in the circuit
is great, so the gauge's indicator indicates in
the "Full" area.
When there is little fuel, the unit's resistance
D
is high and the current flowing in the circuit
is small, so the gauge's indicator indicates in
the "Empty" area.
<Engine coolant temperature gauge>
When the ignition switch is at the "ON" position,
D
the engine coolant temperature gauge is
activated.
When the engine coolant temperature is high,
D
the unit's resistance is low and there is a great
flow of current in the circuit, so the gauge's
indicator indicates in the "H" area.
When the engine coolant temperature is low,
D
the unit's resistance is high and there is a small
flow of current in the circuit, so the gauge's
indicator indicates in the "C" area.
CIRCUIT DIAGRAMS
TROUBLESHOOTING HINTS
1. Fuel gauge does not operate, or registers
incorrectly.
(1) The fuel gauge indicates "F" when the fuel
2. Engine coolant temperature gauge does not
operate, or registers incorrectly.
(1) When the engine coolant temperature
gauge unit (sub) connector is disconnected
and the "1" terminal is earthed.
Check fuel gauge.
D
gauge is earthed with its connector
unplugged, it registers "H".
Check engine coolant temperature
D
gauge unit.
B-147