Mitsubishi Eclipse Workshop Manual page 143

FUEL
-
On-vehicle Inspection
of
MPI
Components
13-75
o
o
POWER STEERING FLUID PRESSURE SWITCH
Engine control
unit
o
o
I
Pqrer
steerin"
I
fruidpressureffi
tj_l
=
@ Harness side
conneclor
7oo_2.ooo
liSgo;l.o*
100-284)
213-
184)
Pressure
[kPa (kg,/cmz. psi)l
o
o
7FU0536
OPERATION
o
The power steering
fluid
pressure switch converts presence,/absence
of power steering
load
into
low,/high voltage and inputs it to the engine control unit, which then controls the idle späed control
servo based on this signal.
o
The battery voltage in
the
engine control
unit is
applied through a
resistor
to the power steering fluid
pressure switch. Steering operation causes
the power
steering
fluid
pressure to
increase, turniäg the
switch on' As a result. continuity is produced between the battery voltage applied and earth. This
caiuses
the power steering fluid
pressure terminal voltage
to
go from high
to
low.
INSPECTION
.'i''
Using Muhi-use Tester
{MUn
o
o
Engine control unit connector
njHtrl
F-=rsr-rsl
lFtstFlätPl
Function Item
No. Data display
Check
condition
Steering wheel Normal indication
Data reading
27
Switch state
Engine: ldling
Steering wheel neutral
position
(wheels
straight-ahead direction)
OFF
Steering
wheel half turn
ON
(9
iliteubishi motoE Corporrtion
Apr.
t99l
PUn E90tO