8a4d62f867109fbeca50e42cf8b25bfb417cce7aac57546957a239e4fc600888

nsxb22066a.pdf

Aspirator Fan
Test
Connect battery power to the No. 3 terminal of the
aspirator fan, and connect ground to the No. 4 terminal.
The aspirator fan should run.
Relay
Test
There should be continuity between the C and D
terminals.
There should be continuity between the A and B ter-
minals when power and ground are connected to the C
and D terminals.
There should be no continuity when power is
disconnected.

Attachments

b73018b0c05d192df417855fca084d9547b42d36e66ae9b05b825e428e8beb24

nsxe22076a.pdf

Compressor
Description
This compressor is a Nippondenso piston type. A revolving inclined disc drives the surrounding 10 reciprocating pistons.
As the inclined disc revolves, it pushes the pistons, protected by a ceramic shoe, thus compressing the refrigerant.
CENTER BOLT
PRESSURE PLATE
SHIMS
SNAP RING B
PULLEY
SNAP RING A
FIELD COIL
MAGNETIC CLUTCH
FIELD COIL
PISTONS

Attachments

7224e0cf96925854ccd87bbc9ae0230956fda9ef0301112be4c52ee1878f7f5b

nsxb22074a.pdf

Heater-Evaporator Unit
Replacement
SRS components are located in this area. Review the SRS
component locations, precautions, and procedures in the
SRS section (24) before performing repairs or service.
1. Remove the blower unit (see page 22-67 (’93-’96),
63(’91-’92)).
2. When the engine is cool, drain the engine coolant
from the radiator (see section 10).
Do not remove the radiator cap when
the engine is hot; the engine coolant is under
pressure and could severely scald you.
CAUTION: Engine coolant will damage paint. Quick-
ly rinse any spilled engine coolant off painted sur-
faces.
3. Disconnect the heater valve cable from the heater
valve.
4. Disconnect the heater hoses. Engine cootant will
run out when the hoses are disconnected, drain it
into a clean drip pan.
HEATER
VALVE CASLE
HEATER VALVE
5. Recover the refrigerant from the A/C system with a
R-134a refrigerant Recovery/Recycling/Charging
System. (see page 22-73).
6. Disconnect the receiver line and the suction line from
the evaporator. Cap the open fittings immediately
to keep moisture out of the system.
RECEIVER LINE
New parts (R-134a)
SECTION LINE
7. Remove the dashboard (see section 20).
8. Remove the heater duct.
9. Remove the four mounting bolts, disconnect the con-
nectors from the control units and the evaporator
temperature sensor connector from the control unit
bracket, then remove the control unit bracket.
*: CORROSION RESISTANT
BOLT EVAPORATOR
TEMPERATURE
SENSOR CONNECTOR
CONTROL
UNIT
BRACKET
SRS MAIN
HARNESS
* 6 x 1,0 mm
10 N·m
(1.0 kg-m,
7 Ib-ft)
* 6 x 1.0 mm
10 N·m (1.0 kg-m, 7 Ib-ft)
10. Remove the woofer enclosure (see section 23).

11. Disconnect the connectors from all the control
motors and sensors attached to the heater-
evaporator unit.
12. Remove the two mounting bolts and two nuts, then
remove the heater-evaporator unit through the
passenger door.
: CORROSION RESISTANT
BOLT
HEATER-EVAPORATOR UNIT
NUTS
30 N·m (3.0 kg-m,
22 Ib-ft)
SRS UNIT
6 x 1.0 mm
10 N·m (1.0 kg-m, 7 Ib-ft)
13. Install the heater-evaporator unit in the reverse
order of removal, and:
If you’re installing a new evaporator, add
refrigerant oil (ND-OIL 8) see page 22-69 .
Replace 0-rings with new ones at each fitting,
and apply refrigerant oil to them.
NOTE: Be sure to use the right 0-rings for
R-134a to avoid leakage.
14. Fill the radiator and reservoir tank with the proper
engine coolant mixture. Bleed the air from the cool-
ing system (see section 10).
CAUTION: Follow the sequence described in the air
bleed procedure. If you don’t, you may leave air in
the system which could damage the engine.
15. If necessary, adjust the heater valve cable:
Set the air mix control motor at COOL position
(see page 22-57) .
Connect the end of the heater valve cable to the
heater valve arm.
Gently slide the cable outer housing back from
the end enough to take up any slack in the cable,
but not enough to make the other end move the
arm on the air mix control motor. Then snap the
clamp down over the cable housing.
CLAMP
HEATER VALVE
ARM
HEATER VALVE
CABLE
16. Turn the blower on, and make sure that there is no
air leakage.
17. Charge the system (see page 22-91), and test per-
formance (see page 22-70).

Attachments

e1bb91c2179b443907671b02d0e3ed6abc86afc0ad5d74c4f17f708b7eea9b3a

nsxb22002a.pdf

Special Tools
Ref. No. Tool Number
07JGG — 001010A
07SAZ — 001000A
Page Reference
22-88
22-49 (’94-’96) (’91-’93)
22-50 (’94-’96) (’91-’93)
Description
Belt Tension Gauge
Backprobe Set
Qty
1
2
Main Menu Table of Contents
Special Tools
Ref, No. ‘ Tool Number ì Description W Qty ⋅ Page Reference
Ф O7JGG-001010A Belt Tension Gauge 22-88
®
1
О7ЗА2—ОО1ОООА Backprobe Set 2 22—49 (’94—’96) (91193)
‘ I 22—50 (’94—‘96) (‘91-’93)
22-2

Attachments

cf3af5403788f5c9a34dd4b32a29e75d18c4d4887d077fbacd9ff73fe983e929

nsxb22082a.pdf

Compressor
Illustrated Index
RELIEF VALVE
Replacement, page 22-87
O-RING
Replace.
SUCTION SERVICE VALVE
26 N-m (2.6 kg-m, 19 Ib-ft)
CENTER BOLT
PRESSURE PLATE
SHIM(S)
SNAP RING B
Replace.
PULLEY
CLUTCH SET
Inspection,
page 22-85
SNAP RING A
Replace.
FIELD COIL
Inspection, page 22-85
COMPRESSOR
(Do not disassembly)

Attachments

91403c0ab7a58a1b07dbd0cfd31e51800e490987ee9e7830806029fd9efcf7d0

nsxb22088a.pdf

Belt Adjustment
Deflection Method
1. Apply a force of 100 N (10 kg, 22 Ib) and measure
the deflection between the A/C compressor and the
crankshaft pulley.
A/C Compressor Belt
Used Belt: 10-12 mm (0.39-0.47 in)
New Belt: 5.5-7.5 mm (0.22-0.30 in)
NOTE:
• If there are cracks or any damage evident on the
belt, replace it with a new one.
• “Used belt” means a belt which has been used
for five minutes or more.
• “New belt” means a belt which has been used
for less than five minutes.
2. Loosen the adjusting pulley nut and the adjusting
bolt.
3. Turn the adjusting bolt to get proper belt tension,
then retighten the adjusting pulley nut.
4. Recheck the deflection of the A/C compressor belt.
ADJUSTING BOLT
12 N-m (1.2 kg-m, 9 Ib-ft)
COMPRESSOR
BELT
IDLER PULLEY CENTER NUT
45 N-m (4.5 kg-m, 33 Ib-ft)
Tension Gauge Method
1. Attach the belt tension gauge to the A/C compres-
sor belt as shown below, and measure the tension
of the belt.
A/C Compressor Belt
Used Belt: 350-550 N (35-55 kg. 77-121 Ib)
New Belt: 700-900 N (70-90 kg,
154-198 Ib)
NOTE:
• If there are cracks or any damage evident on the
belt, replace it with a new one.
• Follow the manufacturer’s instructions for the
belt tension gauge.
• “Used belt” means a belt which has been used
for five minutes or more.
• “New belt” means a belt which has been used
for less than five minutes.
2. Loosen the adjusting pulley nut and the adjusting
bolt.
3. Turn the adjusting bolt to get proper belt tension,
then retighten the adjusting pulley nut.
4. Recheck the tension of the A/C compressor belt.
BELT TENSION GAUGE
07JGG – 001010A

Attachments

7c54a2517902db143b7a1f0e3146606366ec08ad5a81b092e4444df99782f22e

nsxb22007a.pdf

A/C Triple Pressure Switch
Construction
The A/C triple pressure switch consists of a High-Low pressure switch (A/C pressure switch A) and a Middle pressure
switch (A/C pressure switch B).
• High-Low pressure switch
If the refrigerant pressure becomes too high (due to blockage), or too low (due to leakage), the A/C triple pressure
switch sends a signal to the fan control unit to prevent the compressor from operating.
Middle pressure switch
If the refrigerant pressure goes above or below 1 550 kPa (15.5 kg/cm2, 220 psi), the A/C triple pressure switch sends
a signal to the ECM, then the ECM operates the idle control.

Attachments

8ad06c464bf0aab0fd464ec04ed757ea00df977cafafb5e8a00b0732588e04a2

nsxb22091a.pdf

Charging
Only use service equipment that is U.L.-listed and is
certified to meet the requirements of SAE J2210 to
remove HFC-134a (R-134a) from the air conditioner
system.
CAUTION: Exposure to air conditioner refrigerant
and lubricant vapor or mist can irritate eyes, nose
and throat.
Avoid breathing the air conditioner refrigerant and
lubricant vapor or mist.
If accidental system discharge occurs, ventilate work
area before resuming service. Additional health and safe-
ty information may be obtained from the refrigerant and
lubricant manufacturers.
Refrigerant capacity: 800-850 g (28-30 oz)
CAUTION: Do not overcharge the system; the
compressor will be damaged.
Connect a R-134a refrigerant Recovery/Recycl-
ing/Charging System to the car as shown follow the
equipment manufacturer’s instructions.
Recovery/Recycling/Charging System

Attachments

0a01bb4bf90e7899dd9f0e71393d7dc1c9a3f5c55977a15135d9355dc2307499

nsxb22081a.pdf

Compressor
Description
This compressor is a Nippondenso piston type for R-134a. A revolving inclined disc drives the surrounding 10
reciprocating pistons. As the inclined disc revolved, it pushes the pistons, protected by a ceramic shoe, thus compress-
ing the refrigerant.
RELIFE VALVE
PISTONS
FIELD COIL

Attachments