Subaru XT 1988 Service Manual page 805

4-1
Yes
Check if
right front suspension
lowers when terminals
CD
and. of control unit
are simultaneously grounded.
Similarly, conduct tests on
the following terminals:
• and" ... Left front
suspension
• and
CD ...
Right rear
suspension
• and • . . . Left rear
suspension
Yes
SUSPENSION
Vehicle height does
No
not lower at any I-Y;",e;;.,;s'--_ _
~
single wheel.
Faulty solenoid valves
(A8, A10) or clogged
air line (A9).
• Measurement method (for the right front suspension)
Remove No. 18, 19 (1800 cc
Canada model only) fuse and
turn ignition switch ON.
unit terminals (in combination)
corresponding to the suspension
to be tested while raising the
car with a jack.
Check that
all test results
are satisfactory as indi-
cated in Table
at right.
Yes
No
(Electrical system is O.K.)
Check air lines (A2, A1O),
pressure switch (A3) and air
tank ASSY (A5).
(1) Check that voltage across terminals. and
fj)
-GND is approximately 5 volts.
(2) Check that voltage across terminals. and
fj)
is approximately 0 volts.
(3) Slowly raise the car with a jack until voltage across terminals. and
flI)
changes
from 0 to 5 volts.
(4) Check that voltage across terminals. and
fj)
is approximately 5 volts.
(5) Slowly raise the car with a jack until voltage across terminals
0
and
fj)
changes
from 5 to 0 volts.
(6) Check that voltage across terminals. and
fj)
is approximately 5 volts.
Each strut must also be checked in a similar manner.
Terminal
combination
L (LOW)
Set height
H (HIGH)
Check vehicle
height sensor.
O.K.
Replace control unit.
48
(Unit: Approx. volts)
Right front
Left front Right rear Left rear
suspension suspension suspension suspension
.++fj) 0++fj) e++fj) "++fj) fj++fj) .++fj) fj++fj) "++fj)
0
5
5
5
0
5 0 5 0 5
5 5 5 5 5 5
5
0 5 0 5 0 5 0
No
Replace affected strut.
Stroke the appropriate front or rear air suspension ASSY and
check continuity between terminals of coupler at end of
height control sensor harness protruding from the air suspen-
sion ASSY. If test results are as shown below, there are no
problems.