ACTIVE-ELECTRONIC CONTROL SUSPENSION
Troubleshooting
CHECKING ACCORDING TO CHARTS CLASSIFIED BY THE MALFUNCTION SYMPTOM
[A] DIAGNOSTIC TROUBLE CODE
No
Yes
Excessive vehicle-height
justment
(overload) overload).
time (due to
Unload the vehicle and turn
the ignition key to OFF; then
restart the engine and check
whether or not the system
functions normally.
the installation position of
the height sensor correct?
Yes
Improper setting of the height
sensor, or malfunction of the
height sensor.
l
Correct the installation
position of the height
sor, or adjust the vehicle
-height sensor rod.
l
Check the height sensor.
Refer to troubleshooting
hints [IO] and
classified by circuit.
Are the front strut and rear
No
Malfunction of the rolling
shock absorber unit air
diaphragm.
Repair the rolling diaphragm,
or replace the shock absorber
ings in normal condition?
unit.
(become folded)
Yes
I s t h e s o u n d o f o p e r a t i o n
The solenoid valves remain
heard from each solenoid
closed, or there is air leakage
v a l v e n e c e s s a r y f o r t h e
due to a malfunction of the
vehicle-height adjustment?
valve seat.
Yes
Is the air pressure in the
vehicle-height
a d j u s t m e n t
pressure line 950
(135
psi) or higher?
Yes
Damaged or disconnected
wiring of the high-pressure
switch, or incorrect vehicle
-height adjustment pressure
line.
l
Check the high-pressure
switch circuit.
R e f e r t o t r o u b l e s h o o t i n g
hint
classified by circuit.
l
Correct the clogging
blem, or replace the air
tube.
Control unit malfunction.
[B] DIAGNOSTIC TROUBLE CODE
No
Does the compressor
tion normally?
Yes
Replace the control unit.
l
Power is not supplied to
the compressor.
Refer to troubleshooting
hint
classified by cir-
cuit.
Improper compressor com-
pression.
Is the air pressure in the
vehicle-height
adjustment
pressure line 760
psi) or lower?
High-pressure
switch
is
Refer to troubleshooting hint
shorted
classified by circuit.
Yes
Air leakage.
TSB Revision
I
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