Mitsubishi 1989-1993 GALANT Service Manual page 996

ACTIVE-ELECTRONIC CONTROL SUSPENSION - Troubleshooting
Operation
The compressor is activated when the pressure
within the high-pressure tank decreases to 760 kPa
(108 psi) or lower, and then stops two seconds after
the pressure reaches 950 kPa (135 psi). Note,
however, that the compressor is not activated while
Diagnostic
If there is damage or disconnection of the heavy-line
circuit, or a short-circuit, or a malfunction of the
output transistor within the ECU, the alarm light
illuminates and control is as described in the table
Diagnostic No.
43
Actuator compulsory activation
Applicable operation
05 Compressor relay ON
ECU terminal voltages (when connector is connected)
Terminal
No.
23 Compressor relay actrvatron signal
Checking the compressor drive circuit (with the connector disconnected)
Terminal Connection destination or Measurement
No. measured part
Compressor relay
Troubleshooting hints (mechanical malfunctions)
Malfunction
mode
The compressor
relay is fused.
The compressor is
stuck.
- - -
Damping force
Attitude control
control
Control stop Held at MEDIUM
The compressor relay is compulsorily switched ON for a period of three seconds.
Signal
When the compressor relay is ON
When the compressor relay is OFF
During fail-safe
(solenoid valve power-source relay switch OFF)
Resistance
Malfunction probable cause
The compressor relay contacts are shorted.
The compressor won't operate due to shorting,
etc.
TSB Revision
the return pump is operating. A thermal switch is
provided at the motor circuit. This thermal switch
functions to interrupt the power to the motor (in
order to protect the compressor) if the temperature
within the compressor becomes high.
below.
(Note that the diagnostic is only applicable up to the
compressor relay.)
Vehicle-height
control
HIGH
Control stop
Description of activation
Condition
Tester connection
Malfunction
The compressor won't stop, causing the battery
to discharge.
The vehicle height can't be increased.
Switch acceptance
SPORT AUTO
Not accept
Terminal
voltage
o v
o v
Check condition Standard
Note
SOFT
I