Mitsubishi 1989-1993 GALANT Service Manual page 952

ACTIVE-ELECTRONIC CONTROL SUSPENSION - Troubleshooting
Diagnostic
trouble
Malfunction
Damaged or disconnected
wiring of the damping force
switching actuator (step
motor type) or of the
actuator circuit, or a
malfunction of an output
41
transistor within the ECU.
There is damaged or
disconnected wiring, or a
short-circuit, of the solenoid
valve power source relay
circuit.
42
Damaged or disconnected
wiring, or a short-circuit, of
the compressor relay
circuit, or a malfunction of
an output transistor within
43
the ECU.
Damaged or disconnected
wiring, or a short-circuit, of
the return pump relay
circuit, or a malfunction of
an output transistor within
44
the ECU.
Vehicle condition
The alarm light illuminates,
and the attitude-control
function and the damping-
force control function are
stopped.
The vehicle height is held to
NORMAL.
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.
TSB Revision
Probable cause
l All connectors of the
damping-force switching
actuator (step motor
type) and the actuator
circuit are disconnected.
l Damaged or disconnected
wiring, or a short-circuit, of
the damping-force
switching actuator (step
motor type) and the
harness of the ECU part of
the actuator circutt.
ECU malfunction.
l
The solenoid valve power
l
source relay contacts are
fused.
Damaged or disconnected circuit (71
l
wiring of the solenoid
valve power source relay
coil.
Damaged or disconnected
l
wiring, or a short-circuit, of
the solenoid valve power
source relay circuit.
l Disconnection of the
connector of the solenoid
valve power source relay
circuit.
ECU malfunction.
l
l Damaged or disconnected
wiring, or a short-circuit, of
the compressor relay coil.
Damaged or disconnected
l
wiring, or a short-circuit, of
the compressor relay
circuit harness.
Disconnection of the
l
compressor relay circuit
connector.
l ECU malfunction.
Damaged or disconnected
l
wiring, or a short-circuit, of
the return pump relay coil.
Damaged or disconnected
l
the return pump relay
circuit harness.
Disconnection of the
l
return pump relay circuit
connector.
l ECU malfunction.
Action
Troubleshoot
ing hints
classified by
circuit [ 171
ing hints
classified by
ing hints
classified by
circuit [I81
ing hints
classified by
circuit [I91