ECO mode NISSAN 300ZX 1984 Z31 Heather And Air Conditioner Workshop Manual

A/C ELECTRICAL COMPONENTS (Manual)
Inspection (Cont'd)
Applied voltage to
solenoid (V)
0
1 Disconnect vacuum hose @
2 Disconnect vacuum hose 3 and connect hose
@ instead Suck in through hose @ to con-
firm that
air does not flow through the hose
and that check
valve is closed
While sucking vacuum hose
0, change voltage
to solenoid to check for openclose operation
of solenoid valve
3 ~~
Operation of solenoid
valve
Close
12 1 Open ~ ~~ ~
Pressure
switch check for turbocharged model
I Pressure I Resistance In1 I
Atmospheric
presswe
Vacuum pressure
more than 46 7 kPa 1350 mmHg, 13 78 mHg1
SHAZ55E
1. Disconnect vacuum hose @ from the terminal
and connect
a vacuum handy pump with the
same terminal
2. Check pressure switch using a vacuum handy
pump.
VACUUM PUMP MOTOR
1 Turn ignition switch "OFF" Disconnect
vacuum hose
@ (Refer to "Pressure Switch
Check") from vacuum tank and connect
it
again
2 Make sure air conditioner switch is "OFF"
3 Turn ignition switch "ON" (Do not start the
engine)
4 Push cruise control main switch to make sure
vacuum pump starts. (A sound should
be heard
from the pump
)
5 The vacuum pump is operating properly if it
stops within 20 seconds after it has started
6 If it fails to stop within 20 seconds, and
vacuum hoses are in good order, it is malfunc-
tioning
SOLENOID VALVE
Perlorm operational check, referring to the "Table
of operation of solenoid valve in Air Flow (page
HA-3) and Wiring Diagram (page HA-8 or HA-31)
HA-33