Mitsubishi 1989-1993 GALANT Service Manual page 954

ACTIVE-ELECTRONIC CONTROL SUSPENSION - Troubleshootina
Diagnostic
trouble Malfunction
code No
Damaged or disconnected
wiring of the left front or
right front valve actuation
circuit, or a malfunction of
an output transistor within
52 the ECU.
Damaged or disconnected
wiring of the left rear or right
rear valve actuation circuit,
or a malfunction of an output
transistor within the ECU.
53
Even though three mrnutes
or more have passed for the
vehicle-height adjustments
of the front and the rear, and
the pressure within the
54
sufficient (the high-pressure
switch is OFF), the
vehicle-height adjustments
are not completed.
Even though three minutes
or more have passed for the
vehicle-height adjustments
of the front and the rear, and
with insufficient pressure
(the high-pressure switch is
ON), the vehicle-height
55
adjustments are not
completed, or the
compressor has operated
minutes or longer.
The return pump is
continuously activated
(repeatedly starts and stops
56
neither the attitude-control
function nor the
vehicle-height control
function has been initiated.
Vehicle condition
The alarm light illuminates,
and the attitude-control
function and the vehicle-
height control function are
stopped.
The damping force is held
to MEDIUM.
The alarm light illuminates,
and the attitude-control
function and, the vehicle-
height control function are
stopped.
The damping force is held
to MEDIUM.
The alarm light illuminates,
and the attitude-control
function and the vehicle-
height control function are
stopped.
The damping force is held
to MEDIUM.
The alarm light illuminates,
and the attitude-control
function and the vehicle-
height control function are
stopped.
to MEDIUM.
Control functions are not
stopped (alarm lamp does
not illuminate).
TSB Revision
Probable cause
Damaged or disconnected Troubleshoo
l
wiring of the left front or
right front valve coil.
Damaged or disconnected circuit [25]
l
wiring of the left front or
right front valve circuit
harness.
l Disconnection of the
connector of the left front
or right front valve circuit.
l ECU malfunction.
l Damaged or disconnected Troubleshoot
wiring of the left rear or
right rear valve coil.
Damaged or disconnected circuit [26]
l
wiring of the left rear or
right rear valve circuit
harness.
Disconnection of the
l
connector of the left rear
or right rear valve circuit.
ECU malfunction.
l
l Improper adjustment of
the front or rear
vehicle-height sensor.
Air-pressure line is
l
clogged.
Malfunction of the front
l
strut unit or the rear shock
absorber unit air spring.
ECU malfunction.
l
Compressor malfunction.
l
Damaged or
disconnected wiring of
the harness between the
compressor relay and the
compressor.
Malfunction of the air
compression of
the
compressor.
Air leakage from the
l
high-pressure tank
(non-airtight connection
with the low-pressure
tank).
l High-pressure switch is
fused.
Air leakage within the front
(left or right) or rear (left or
right) valve.
Action
ing hints
classified by
ing hints
classified by
Refer to
Malfunction
Symptoms
Chart [A] on
Refer to
Malfunction
Symptoms
Chart LB1 on
Replace the
front or rear
solenoid
valve.