Nissan Silvia. Manual — part 262
NEW TERM
NEW ACRONYM /
ABBREVIATION
OLD TERM
Simultaneous multiport fuel injection sys-
tem
***
Simultaneous fuel injection
Smoke puff limiter system
SPL system
***
Supercharger
SC
***
Supercharger bypass
SCB
***
System readiness test
SRT
***
Thermal vacuum valve
TVV
Thermal vacuum valve
Three way catalyst
TWC
Catalyst
Three way catalytic converter system
TWC system
***
Three way + oxidation catalyst
TWC + OC
Catalyst
Three way + oxidation catalytic converter
system
TWC + OC system
***
Throttle body
TB
Throttle chamber
SPI body
Throttle body fuel injection system
TBI system
Fuel injection control
Throttle position
TP
Throttle position
Throttle position sensor
TPS
Throttle sensor
Throttle position switch
TP switch
Throttle switch
Torque converter clutch solenoid valve
TCC solenoid valve
Lock-up cancel solenoid
Lock-up solenoid
Transmission control module
TCM
A/T control unit
Turbocharger
TC
Turbocharger
Vehicle speed sensor
VSS
Vehicle speed sensor
Volume air flow sensor
VAFS
Air flow meter
Warm up oxidation catalyst
WU-OC
Catalyst
Warm up oxidation catalytic converter sys-
tem
WU-OC system
***
Warm up three way catalyst
WU-TWC
Catalyst
Warm up three way catalytic converter
system
WU-TWC system
***
Wide open throttle position switch
WOTP switch
Full switch
MA
EM
LC
EC
FE
CL
MT
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
SAE J1930 TERMINOLOGY LIST
SAE J1930 Terminology List (Cont’d)
GI-49
NOTES
HEATER &
AIR CONDITIONER
CONTENTS
PRECAUTIONS . . . . . . . . . . . . . . . ...2
Supplemental Restraint System (SRS)
. . . . . . . . . . . . . . . . . . . 2
Precautions for Working with HFC-134a (R-134a) . .2
General Refrigerant Precautions . . . . . . . . .3
Precautions for Leak Detection Dye. . . . . . . 3
Precaution for Identification Label on Vehicle . . . .3
Precautions for Refrigerant Connection . . . . . ..4
Precautions for Servicing Compressor. . . . . . 7
Precautions for Service Equipment . . . . . . . .7
Wiring Diagrams and Trouble Diagnoses. . . . . 9
PREPARATION . . . . . . . . . . . . . . . .10
Special Service Tools . . . . . . . . . . . . 10
HFC-134a (R-134a) Service Tools and
Equipment. . . . . . . . . . . . . . . . .. 11
DESCRIPTION . . . . . . . . . . . . . . . ...14
Refrigeration System . . . . . . . . . . . . .14
Component Layout . . . . . . . . . . . . . 15
Control Operation . . . . . . . . . . . . . ..16
Discharge Air Flow. . . . . . . . . . . . . .17
System Description. . . . . . . . . . . . . 18
TROUBLE DIAGNOSES. . . . . . . . . . . . 19
Component Location. . . . . . . . . . . . ..19
Circuit Diagram - Air Conditioner. . . . . . . ...21
Wiring Diagram - A/C, Heater - . . . . . . . . .22
Wiring Diagram - A/C, M - . . . . . . . . . . .23
How to Perform Trouble Diagnoses for Quick
and Accurate Repair . . . . . . . . . . . . ..27
Operational Check . . . . . . . . . . . . . .28
A/C System. . . . . . . . . . . . . . . . 30
Intake Door . . . . . . . . . . . . . . . . 32
Blower Motor. . . . . . . . . . . . . . . ..36
Insufficient Cooling . . . . . . . . . . . . . 43
Insufficient Heating . . . . . . . . . . . . . 51
Air Mix Door. . . . . . . . . . . . . . . ...52
Mode Door . . . . . . . . . . . . . . . . .59
Bi-Level Door . . . . . . . . . . . . . . . .62
Magnet Clutch. . . . . . . . . . . . . . . 65
Noise. . . . . . . . . . . . . . . . . . ..76
SERVICE PROCEDURE. . . . . . . . . . . . 77
HFC-134a (R-134a) Service Procedure . . . . . 77
Maintenance of Lubricant Quantity in
Compressor . . . . . . . . . . . . . . . ...79
Compressor . . . . . . . . . . . . . . . ...81
Compressor Clutch - DKV-11G (ZEXEL make). . .82
Thermal Protector . . . . . . . . . . . . . ..85
Heater Unit (Heater Core) . . . . . . . . . . .86
Blower Unit . . . . . . . . . . . . . . . . 88
Cooling Unit (A/C Evaporator). . . . . . . . ...89
Refrigerant Lines . . . . . . . . . . . . . ...90
Fluorescent Dye Leak Detector. . . . . . . . .94
Belt. . . . . . . . . . . . . . . . . . . .95
Idle Air Control Valve (IACV) - Auxiliary Air
Control (AAC) Valve . . . . . . . . . . . . ..95
A/C Control System . . . . . . . . . . . . ...95
Ventilation Air Filter. . . . . . . . . . . . . 96
SERVICE DATA AND SPECIFICATIONS (SDS) . . .98
Manual . . . . . . . . . . . . . . . . . ...98
GI
MA
EM
LC
EC
FE
CL
MT
AT
PD
AX
SU
BR
ST
RS
BT
SC
EL
IDX
Supplemental Restraint System (SRS) “AIR
BAG”
NMHA0270
The Supplemental Restraint System such as “AIR BAG” used along with a seat belt, helps to reduce the risk
or severity of injury to the driver and front passenger for certain types of collision. The SRS system composi-
tion which is available to NISSAN MODEL S15 is as follows:
The Supplemental Restraint System consists of driver air bag module (located in the center of the steering
wheel), front passenger air bag module (located on the instrument panel on passenger side), a diagnosis
sensor unit, warning lamp, wiring harness and spiral cable.
Information necessary to service the system safely is included in the RS section of this Service Manual.
WARNING:
I
To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance should be per-
formed by an authorized NISSAN dealer.
I
Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the RS section.
I
Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified with yellow harness connector.
Precautions for Working with HFC-134a
(R-134a)
NMHA0061
WARNING:
I
CFC-12 (R-12) refrigerant and HFC-134a (R-134a) refrigerant are not compatible. These refrigerants
must never be mixed, even in the smallest amounts. If the refrigerants are mixed, a compressor
failure is likely to occur.
I
Use only specified lubricant for the HFC-134a (R-134a) A/C system and HFC-134a (R-134a) compo-
nents. If lubricant other than that specified is used, compressor failure is likely to occur.
I
The specified HFC-134a (R-134a) lubricant rapidly absorbs moisture from the atmosphere. The fol-
lowing handling precautions must be observed:
a) When removing refrigerant components from a vehicle, immediately cap (seal) the component to
minimize the entry of moisture from the atmosphere.
b) When installing refrigerant components to a vehicle, do not remove the caps (unseal) until just
before connecting the components. Connect all refrigerant loop components as quickly as pos-
sible to minimize the entry of moisture into system.
c) Only use the specified lubricant from a sealed container. Immediately reseal containers of lubri-
cant. Without proper sealing, lubricant will become moisture saturated and should not be used.
d) Avoid breathing A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and
throat. Use only approved recovery/recycling equipment to discharge HFC-134a (R-134a) refriger-
ant. If accidental system discharge occurs, ventilate work area before resuming service. Additional
health and safety information may be obtained from refrigerant and lubricant manufacturers.
e) Do not allow lubricant (Nissan A/C System Oil Type R) to come in contact with styrofoam parts.
Damage may result.
PRECAUTIONS
Supplemental Restraint System (SRS) “AIR BAG”
HA-2
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