Mitsubishi MOTORS Laser 1991, Service Manual, Page: 233 / 320

1. When operation is normal
l When the ignition switch is switched to the
“ON” position, battery voltage is applied (via the
hazard switch) to the turn-signal and hazard
flasher unit.
l When the turn-signal switch is switched to the
“LH” (or
position, Trl (within the flasher
unit) is switched ON and the relay contact (also
within the flasher unit) is switched ON. As a
result, the “LH” (or turn-signal lights and
turn-signal indicator light illuminate.
At the same time, charging to the capacitor (via
begins, and charging continues until the
lower-limit potential (set by is reached.
When the capacitor becomes fully charged, the
output reverses and Trl is switched OFF;
the relay contact is also switched OFF, and, as a
result, the “LH” (or turn-signal lights and
turn-signal indicator light are switched OFF.
At the same time that Trl is switched OFF, the
capacitor begins discharging, and, when dis-
charging finishes, the output of
once
again reverses and Trl is switched ON, after
which the “LH” (or
turn-signal lights and
turn-signal indicator light illuminate.
As a result of the continued repetition of the steps
described above, the “LH” (or
turn-signal
lights and turn-signal indicator light flash ON and
OFF repeatedly.
2. If one light’s wiring is damaged or disconnected
If the bulb for one turn-signal light is damaged or
disconnected, the result is an overall increase
of the resistance for the entire light circuitry,
resulting is a decrease of the voltage at the
part within the flasher unit.
l As a result of this being detected, the lower-limit
potential set by
is increased, with the
result that the time required for charging of the
capacitor becomes shorter.
l As a result, the ON and OFF cycles of Trl also
become shorter, and thus the number of flashes
of the lights becomes greater.
Name
Turn-signal and hazard flasher unit
Symbol
A
When the hazard-warning switch is switched to
the “ON” position, the relay contact of the turn
signal and hazard flasher unit is switched ON and
OFF repeatedly, in the same manner as for the
operation of the turn-signal lights, and the left and
right turn-signal lights and turn-signal indicator
lights simultaneously flash repeatedly.
NOTE
The number of flashes of the hazard-warning
lights does not change if there is damaged or
disconnected wiring of one light.
1. The turn-signal lights and hazard-warning lights
do not operate at all.
l Check the hazard switch contact (power
supply side).
Check the turn-signal and hazard flasher unit.
2. All turn-signal lights at the left (or right) side do
not function.
The hazard-warning lights function normally.
l Check the hazard switch contact
signal side).
l Check the turn-signal switch.
3. The number of flashes of the turn-signal lights is
excessive.
l Check the bulbs.
4. The hazard-warning lights do not function.
The turn-signal lights function normally.
l Check the hazard switch contact
warning light side).