ACTIVE-ELECTRONIC CONTROL SUSPENSION Troubleshooting
Operation
The compressor is activated when the pressure
within the high-pressure tank decreases to 760
(108 psi) or lower, and then stops two seconds after
the pressure reaches 950
(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
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.)
Diagnostic No.
43
Attitude control
Control stop
Damping force
control
Held at MEDIUM
Vehicle-height
control
Control stop
HIGH
Switch acceptance
SPORT
AUTO
SOFT
Not accept
Actuator compulsory activation
Applicable operation
Description of activation
I
05
Compressor relay ON
The compressor relay is compulsorily switched ON for a period of three seconds.
ECU terminal voltages (when connector is connected)
Terminal
No.
Signal
Condition
Terminal
voltage
23
Compressor relay
signal
When the compressor relay is ON
When the compressor relay is OFF
o v
During fail-safe
o v
(solenoid valve power-source relay switch OFF)
-
-
-
TSB Revision
Checking the compressor drive circuit (with the connector disconnected)
Battery positive voltage
Terminal Connection destination or
No.
measured part
Tester connection
Check condition
Standard
Compressor relay
Resistance
Troubleshooting hints (mechanical malfunctions)
Malfunction
mode
Malfunction probable cause
Malfunction
Note
The compressor
relay is fused.
The compressor relay contacts are shorted.
The compressor won’t stop, causing the battery
to discharge.
The compressor is
The compressor won’t operate due to shorting,
The vehicle height can’t be increased.
stuck.
etc.
Summary of Contents for 1989 Galant
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