Mitsubishi 1989-1993 GALANT Service Manual page 1002

Operation
The flow-rate switchover valve switches, in two
stages, the intake air flow volume supplied to each
of the air springs.
Usually, during ordinary adjustments of the vehicle
height, the flow-rate switchover valve is OFF (clos-
vehicle height to the appropriate speed, and the air
Diagnostic
circuit, or a short-circuit, or a malfunction of the out-
put transistor within the ECU, the alarm light
Diagnostic No. Attitude control
46 Rolling control
only stops
Actuator compulsory activation
The flow-rate switchover valve is activated by the
following.
Code No
Rolling control (left turn)
09
Rolling control (right turn)
ECU terminal voltages (when connector is connected)
Terminal
No.
22 Flow-rate switchover valve
Checking the flow-rate switchover valve activation circuit (with the connector disconnected)
T e r m i n a l Connectron destinatron or Measurement
No measured part
22 Flow-rate switchover
valve activation signal
Troubleshooting hints (mechanical malfunctions)
Malfunction
mode
(closed) due to corrosion, freezing
Stuck in the
The valve is stuck in the ON (open)
ON (open) due to corrosion, freezing, etc.
position caused by morsture penetration.
atmosphere
S U S P E N S I O N
is supplied to each of the air springs with the flow
volume restricted by the orifice.
This valve is switched ON (opened) for rapid adjust-
ment of the vehicle height, or during control of roll-
ing,
surface, thus permitting a greater amount of air to
be supplied to the air springs.
illuminates and control is as described in the table
below.
Damping force Vehicle-height
control
Held at Rolling control
MEDIUM
only stops
When the flow-rate switchover valve is ON (open)
When the flow-rate switchover valve is OFF (closed)
During fail-safe (solenoid valve power source relay switch OFF)
Tester connection
Resistance
Insufficient rolling control effect, A feeling of
l
incompatibility.
The vehicle height decreases after rolling control.
l
l The vehicle height upward adjustment is slow
when a poor road surface is detected.
The upward adjustment of the vehicle height is
l
excessive.
There is a feelina of incomoatibilitv durinq rolling
l
control
l The compressor is activated too frequently.
There is a feeling of incompatibility during rolling
l
control
when the vehicle is traveling on a bad road
etc.,
Switch acceptance
control
HIGH SPORT
Condition
Check condition
Constantly
Malfunction
control):
AUTO SOFT
Not accept
Terminal
voltage
o v
o v
Standard
Approx.
Very slight leakages can-
not be detected Such
time afterward by a decre
ase of the vehicle height