1984 NISSAN 300ZX heater

HEATER &
AIR CONDITIONER
I v __I_--
SECTION HA^ I
CONTENTS
GENERAL DESCR I PTlON . ... .. . HA- 2
AIR FLOW AND COMPONENT LAYOUT
. .. . .. HA- 3
DOOR CONTROL .. 1.. .. HA- 6
LOCATION OF VACUUM COMPONENTS ... HA- 5
HEATER ELECTRICAL CIRCUIT. . . . . .. HA- 7
DESCRIPTION-Air Conditioner (Manual) . ... ..
A/C PERFORMANCE TEST ..
DISCHARGING, EVACUATING, CHARGING AND CHECKING
PRECAUTIONS FOR REFRIGERANT CONNECTION .
PIPING, COMPRESSOR MOUNTING AND F.1 C D.
COMPRESSOR OIL-ForMJS170
. . .. ..
COMPRESSOR-Model MJS170 .. ..
A/C ELECTRICAL CIRCUIT (Manual) . .. ..
A/C ELECTRICAL COMPONENTS (Manual) ..
LOCATION OF A/C ELECTRICAL COMPONENTS ....
SERVICE DATA AND SPECIFICATIONS (S D S ) . .
SPECIAL SERVICE TOOLS .. ..
HA- 9
HA-12
HA-18
HA-20
. HA-21
HA-23
HA-25
. HA-30
.. HA-32
. HA-34
.. HA-35
. HA-38

DOOR CONTROL
Heater and Air Conditioner Control Removal
PROCEDURES
Remove each screw in the number order shown in the following illustration.
Radiolaw condnmner bracket f
SHA234B
HA-6

HEATER ELECTRICAL CIRCUIT
Schematic
BATTERY
FEEDBACK
POTENT10
TEMPERATURE
SEmlNG POTENT10
I I
For water cock
FUSIBLE
LINK
1
4
BLOWER
RELAY
For intake actuator
For floor door actuator
For vemila~uator
Far defros-
DSVV IForawmtxdoor)
DSVV IForairmrxdoorl -
a
SHA236B
HA-7

HEATER ELECTRICAL CIRCUIT
Wiring Diagram
SHA237B
HA-8

A/C ELECTRICAL COMPONENTS (Manual)
Time while applying voltage
(12V) to the terminals
between @and
@ (Sed
Inspc
Resistance between
@and
@
622)
SUPER HEAT SWITCH
a Dip the temperature sensor of the super heat
switch in
a container filled with cold water and
increase the temperature of the water The
switch should turn
"ON"
Do not allow the switch to get into water.
Wipe water from temperature sensor section
after checking
it
NOTICE
a
a
Super heat s.wlch
Thermometer
Ohm range __ - - ._ .- - -- .. . . ".
' ' ' ' Super hear switch Below 16'C 161°F) OFF Above approximately 27 5-C (82°F) ON
hb
SHA251B
More than 175 Less than 400
Less than 105 I co
SHA252B
VACUUM TANK
To intake manifold TO As To heater t,,t unit (An room) To warer cock
To vacuum pump
@ Magnet valve
Check valve (One way 1 )
SHAZ53B
Solenoid valve check for water cock
SHA254B
HA-32