Nissan Silvia. Instruction — 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

SECTION

HA

CONTENTS

PRECAUTIONS . . . . . . . . . . . . . . . ...2

Supplemental Restraint System (SRS)

″

AIR

BAG

″

. . . . . . . . . . . . . . . . . . . 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

Instruction . . . . . . . . . . . . . . . . . ...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 Instruction.

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 Instruction. 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