Mitsubishi 1989-1993 GALANT Service Manual page 972

ACTIVE-ELECTRONIC CONTROL SUSPENSION - Troubleshooting
Operation
When the ignition is switched ON, the ECS power
relay is also switched ON, and power is supplied to
the system. At the same time, the ECU switches
ON the solenoid valve power relay, and power is
supplied to the solenoid valve activation circuit. As a
result, system operation is possible.
Diagnostic
When problems such as damage or disconnection
of the heavy-line circuit, or fusing of the contacts of
the solenoid valve power relay, etc. occur, the alarm
Diagnostic No. Attitude control
Rolling control
42
Service data indication
Indication
Indicates ON/OFF status of the
16
iqnition switch.
ECU terminal voltage (when connector is connected)
valve power relay output
Solenoid valve power relay drive
26
signal
Checking the ACTIVE-ECS power source circuit (with the connector disconnected)
Terminal Connection destination or Measurement '
No.
measured part
5 Ignition switch
8
Solenoid valve power
relay
ECU back-up power
source
When the ignition switch is switched OFF after driv-
ing, the three-minute OFF delay timer makes
vehicle-height adjustment (down only) possible for a
period of three minutes, thus preventing the vehicle
height from increasing while passengers get out of
the vehicle, etc.
light illuminates, and control is as described in the
table below.
Damping force
control
Held at MEDIUM Rolling control
16: IGNITION SW. ON/OFF
When solenoid valve power relay is ON
When solenoid valve power relay is
Tester connection
Voltage
TSB Revision
Vehicle-height
control
HIGH
Display
OFF
Check condition
Ignition switch OFF
Ignition switch
O F F - O N
Terminal 26 open.
Terminal 26 grounded
Switch acceptance
SPORT AUTO SOFT
Not accept
Standard
o v
O-B+