Subaru XT 1988 Service Manual page 812

SUSPENSION 4-1
A3) Pressure switch
1) Connect a pressure gauge.
2) Ground the air charge solenoid valve and compressor
[§J .
3) Apply a pressure of 9 to 10 atm, to the solenoid valve to
check that the pressure switch turns OFF. If it does not turn
OFF, the pressure switch is faulty or its circuit is broken.
4) Ground the air charge solenoid valve and the discharge
solenoid valve.
5) Check that the pressure switch turns ON when less than
8.5 atm. pressure is applied to the solenoid valve. (If the
pressure switch does not turn ON, it is faulty or its circuit is
broken.
A4) Air leaks from air suspension assembly
Rear air suspension ASSY
Front air suspension ASSY
•
L4401
Fig. 80
Remove front or rear air suspension ASSY, and apply air into
it. Put air suspension ASSY in water, and check for air leaks
at places indicated by arrow.
a. Do not apply water to strut mount ball bearing. Apply
SUBARU eRe (004301003) etc. to check for air leaks.
b. After checking, thoroughly remove water from each portion
of air suspension ASSV by applying compressed air.
A5) Air leakage from air tank assembly
1) Connect a pressure gauge.
2) Ground the air charge solenoid valve. Read the pressure
gauge 5 seconds after grounding the solenoid valve.
3) Wait about 10 minutes.
4) Repeat step 2) and check that the pressure drop is less
than 0.5 atm.
AS) Vehicle height sensor
Compress and extend front or rear air suspension ASSY, and
check with a tester if continuity exists between connector
terminals of vehicle height sensor harness coming out of air
suspension ASSY. Air suspension ASSY is in good condition
if continuity exists as follows.
Extension
Compression
Suspension unit
..
II
Continuity between
t
t=
(red) and (white) _ _ _ _ _ _
terminals
Continuity between
(blue) and (white) - - - - - - - - -
terminals
Solid line
Continuity exists
Broken line - - - continuity does not exist
L4·1374
Fig, 81
Front
Rear
Blue
White
L4·178
Fig.
82
Arrangement of connector terminals
55