Mitsubishi 1989-1993 GALANT Service Manual page 966

ACTIVE-ELECTRONIC CONTROL SUSPENSION - Troubleshooting
Operation
The low-pressure switch is switched ON and OFF
by the pressure in the low-pressure tank, and as a
result the ECU functions to control the activation
and stop of the return pump.
When the pressure in the low-pressure tank
Diagnostic
If there is a short-circuit, or damaged or discon-
low-pressure switch becomes shorted, and the
low-pressure switch is as a result always ON, (the
alarm light illuminates during active attitude con-
Diagnostic No.
Attitude control
13
Control stop
Service data indication
Code No.
13
the low-pressure switch
ECU terminal voltages (when connector is connected)
Low-pressure tank pressure
signal
Checking the low-pressure switch circuit [with the connector disconnected).
Terminal Connection destination Measurement
or measured part
38
Low-pressure switch
becomes 140 kPa (20 psi) or higher, it is switched *
OFF, and as a result the ECU sends the drive signal
to the return pump. It is switched ON at a pressure
of 70 kPa (10 psi) or lower, and the return pump
stops two seconds later.
Damping force Vehicle-height
control
Normal operation Normal operation
13: LOW PRESS. SW. ON/OFF
When the low-pressure switch is ON
When the low-pressure switch is OFF
Tester connection
Resistance 38-36
TSB Revision
Not applicable to 1990 models.
Switch acceptance
control
HIGH
SPORT
Display
Condition
Check condition
Low-pressure tank internal
pressure 70 kPa (10 psi) or
below
Low-pressure tank internal
pressure 140 kPa (20 psi) or
higher.
SOFT
AUTO
Accept
Terminal
voltage
ov
Standard
Continuity
No