Mitsubishi 1989 Galant, Service Manual

Page: 203 / 1273

FUEL SYSTEM VALVE>
Inspection
of
Components
CLOSED THROTTLE POSITION SWITCH models>
c o n t r o l
speed control
motor connector
Component side
connector
Harness side
connector
plunger
I
Throttle shaft angle
0 1 2 0 9 2
Engine control module
6
3
OFF
ON
Closed throttle
switch
OPERATION
l
The closed throttle position switch functions to
convert (to HIGH/LOW-level voltage) data as to
whether the accelerator is depressed or
leased, and to input that voltage (as signals) to
the engine control module. The engine control
module, based upon those signals, regulates the
idle-speed control motor.
TROUBLESHOOTING HINTS
l
Voltage within the engine control module is
plied, by way of the resistance, to the closed
throttle position switch.
When the foot is taken off the accelerator, the
closed throttle position switch is switched
ON,
so the current is grounded.
As a result, the closed throttle position switch
terminal voltage changes from HIGH to LOW
level.
If there is an abnormal condition of the closed
position switch output even though the results
of the checking of the closed throttle position
switch harness and of the component itself indicate
a normal condition, the cause may be presumed to
be one of the following.
TSB Revision
(1) Improper adjustment of the accelerator cable or
the automatic-cruise-control cable.
(2) Improper adjustment of the fixed SAS.