Low Pressure Switch Actuation Pressure Check - Mitsubishi 1989-1993 GALANT Service Manual

ACTIVE-ELECTRONIC CONTROL SUSPENSION - ;;:i~%:?~~"~
Adaptor E (MB991227)
Shut-off valve
witch
Air-pressure gauge (MB991075)
Adaptor C
2. Connect the gauge side air tubes of the special tool (air-
pressure gauge) to the disconnected air tube and joint,
connecting them via the special tube (adaptor E).
NOTE
The shut-off valve of the air-pressure gauge should be
closed.
3. Start the
NOTE
If the system is in normal condition, the compressor will
be activated after the engine is started, because the
pressure within the high-pressure tank has decreased.
4. After activation of the compressor, the pressure within the
high-pressure tank will increase; check whether or not the
pressure is the standard value when the compressor is
stopped.
Standard value: 900 kPa (128 psi) or higher
5. Gradually open the shut-off valve of the air-pressure gauge
while watching the indicator of the air-pressure gauge;
check whether or not the pressure that actuates the
compressor's operation (when the pressure within the
high-pressure tank has dropped) is within the standard
value range.
Standard value: 710-810 kPa (101-115 psi)
NOTE
The ON/OFF status of the high-pressure switch at this
time can be checked by the special tool MB991269 (1989
models), MB991341 (1990, 1991, 1992 models).
(Refer to P.33B-18.)
6. If the pressure within the high-pressure tank is not within
the standard value range when the compressor is stopped
(high-pressure switch OFF) or the compressor is activated
(high-pressure switch ON), remove the reserve tank
assembly and replace the high-pressure switch.
LOW-PRESSURE SWITCH (LOW-PRESSURE TANK
SIDE) ACTUATION PRESSURE CHECK
1. Remove joint H of the blue-marked air tube (for the left
front valve) of the front solenoid valve assembly.
2. Connect the special tool (air-pressure gauge) between the
disconnected air tube and the front solenoid valve assem-
bly by using the special tools (adaptors E and C).
TSB Revision
and activate the compressor.
engine