Mitsubishi MOTORS Laser 1991, Руководство по обслуживанию, Страница: 195 / 320

Troubleshootina
When the ignition key is at the “ON” position,
the fuel gauge is activated.
When there is much fuel, the unit’s resistance is
small and the current flowing in the circuit is
great, so the gauge’s indicator indicates in the
“F” area.
When there is little fuel, the unit’s resistance is
high and the current flowing in the circuit is small,
so the gauge’s indicator indicates in the “E”
area.
When the ignition key is at the “ON” position,
the engine coolant temperature gauge is
activated.
When the engine coolant temperature is high, 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, 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
area.
Pulses are produced in accordance with the
vehicle speed, and vehicle-speed signals are input
to systems (the 4 A/T system, etc.) that regulate
according to the vehicle speed.
When the ignition switch is at the “ON” position,
the oil pressure gauge is activated.
When oil pressure is high, the internal contacts of
the gauge unit are kept closed for a longer period
of time. This causes more current to flow in the
circuit, and the gauge pointer swings to the high
pressure side.
l When oil pressure is low, the internal contacts of
the gauge unit open in a shorter period of time.
Therefore, there is less current flowing in the
circuit and the gauge pointer swings to the low
pressure side.
l When the ignition key is set to the “ON”
position, the gauge indicator will be at
"0".
l When the engine is started, the indicator will
move from “0” to the minus
side, and then,
as the boost level increases, it will move to the
plus
side.
NOTE
For operation of warning light and indicator light,
refer to
INDICATORS.
1. The fuel gauge doesn’t function, or shows the
incorrect indication.
Disconnect the connector of the fuel gauge
unit; the “F” side is indicated when terminal
3 (FWD) or 2 is then grounded.
l Check the fuel gauge.
2. The engine coolant temperature gauge doesn’t
function, or shows the incorrect indication.
T h e “ H ” side is indicated when the
connector of the engine coolant temperature
gauge unit is disconnected and then
grounded.
Check the engine coolant temperature
gauge unit.
3. The oil pressure gauge doesn’t function, or
shows the incorrect indication.
The
“H” side is indicated when the
connector of the oil pressure gauge unit is
disconnected and then grounded.
l Check the oil pressure gauge unit.
4. Systems dependent upon control according to
the vehicle speed do not function correctly.
Check the reed switch (located within the
speedometer).
5. The meter illumination light does not illuminate.
The tail lights illuminate.
l Check the rheostat.