
ISO 15031-2 Terminology List
All emission related terms used in this publication in accordance with ISO 15031-2 are listed. Accordingly, new
terms, new acronyms/abbreviations and old terms are listed in the following chart.
***: Not applicable
NEW TERMNEW ACRONYM/
ABBREVIATIONOLD TERM
Air cleaner ACL Air cleaner
Barometric pressure BARO
Barometric pressure sensor-BCDD BAROS-BCDD BCDD
Camshaft position CMP ***
Camshaft position sensor CMPS Crank angle sensor
Carburetor CARB Carburetor
Charge air cooler CAC Intercooler
Closed loop CL Closed loop
Closed throttle position switch CTP switch Idle switch
Clutch pedal position switch CPP switch Clutch switch
Continuous fuel injection system CFI system ***
Continuous trap oxidizer system CTOX system ***
Crankshaft position CKP ***
Crankshaft position sensor CKPS ***
Data link connector DLC ***
Data link connector for CONSULT DLC for CONSULT Diagnostic connector for CONSULT
Diagnostic test mode DTM Diagnostic mode
Diagnostic test mode selector DTM selector Diagnostic mode selector
Diagnostic test mode I DTM I Mode I
Diagnostic test mode II DTM II Mode II
Diagnostic trouble code DTC Malfunction code
Direct fuel injection system DFI system ***
Distributor ignition system DI system Ignition timing control
Early fuel evaporation-mixture heater EFE-mixture heater Mixture heater
Early fuel evaporation system EFE system Mixture heater control
Electrically erasable programmable read only
memoryEEPROM ***
Electronic ignition system EI system Ignition timing control
Engine control module ECM ECCS control unit
Engine coolant temperature ECT Engine temperature
Engine coolant temperature sensor ECTS Engine temperature sensor
Engine modification EM ***
Engine speed RPM Engine speed
Erasable programmable read only memory EPROM ***
Evaporative emission system EVAP system Evaporative emission control system
Exhaust gas recirculation valve EGR valve EGR valve
Exhaust gas recirculation control-BPT valve EGRC-BPT valve BPT valve
Exhaust gas recirculation control-solenoid valve EGRC-solenoid valve EGR control solenoid valve
ISO 15031-2 TERMINOLOGY LIST
GI-35

***: Not applicable
NEW TERMNEW ACRONYM/
ABBREVIATIONOLD TERM
Exhaust gas recirculation temperature sensor EGR temperature sensor Exhaust gas temperature sensor
Flash electrically erasable programmable read
only memoryFEEPROM ***
Flash erasable programmable read only memory FEPROM ***
Flexible fuel sensor FFS ***
Flexible fuel system FF system ***
Heated Oxygen sensor HO
2S Exhaust gas sensor
Idle air control system IAC system Idle speed control
Idle air control valve-air regulator IACV-air regulator Air regulator
Idle air control valve-auxiliary air control valve IACV-AAC valve Auxiliary air control (AAC) valve
Idle air control valve-FICD solenoid valve IACV-FICD solenoid valve FICD solenoid valve
Idle air control valve-idle up control solenoid
valveIACV-idle up control solenoid
valveIdle up control solenoid valve
Idle speed control-FI pot ISC-FI pot FI pot
Idle speed control system ISC system ***
Ignition control module ICM ***
Indirect fuel injection system IFI system ***
Intake air temperature sensor IATS Air temperature sensor
Knock *** Detonation
Knock sensor KS Detonation sensor
Malfunction indicator MI Check engine light
Manifold absolute pressure MAP ***
Manifold absolute pressure sensor MAPS ***
Manifold differential pressure MDP ***
Manifold differential pressure sensor MDPS ***
Manifold surface temperature MST ***
Manifold surface temperature sensor MSTS ***
Manifold vacuum zone MVZ ***
Manifold vacuum zone sensor MVZS ***
Mass air flow sensor MAFS Air flow meter
Mixture control solenoid valve MC solenoid valve Air-fuel control solenoid valve
Multiport fuel injection system MFI system Fuel injection control
Neutral position switch *** Neutral switch
Non-volatile random access memory NVRAM ***
On-board diagnostic system OBD system Self-diagnosis
Open loop OL Open loop
Oxidation catalyst OC Catalyst
Oxidation catalytic converter system OC system ***
Oxygen sensor O
2S Exhaust gas sensor
Park position switch *** Park switch
Park/neutral position switch PNP switch Park/neutral switch
Periodic trap oxidizer system PTOX system ***
ISO 15031-2 TERMINOLOGY LIST
ISO 15031-2 Terminology List (Cont'd)
GI-36

Control Operation
FAN CONTROL DIAL
This DIAL turns the fan ON and OFF, and controls fan speed.
AIR CONTROL DIAL
This DIAL allows outlet air to flow.
TEMPERATURE CONTROL DIAL
This DIAL allows the temperature of the outlet air to be adjusted.
AIR RECIRCULATION SWITCH
OFF position:
Outside air is drawn into the passenger compartment.
ON position (Indicator light ON):
Interior air is recirculated inside the vehicle.
AIR CONDITIONER SWITCH
Start the engine, turn the fan control dial to the desired (1 to 4) position and press the air conditioner switch
to turn ON the air conditioner. The indicator light will come on when the air conditioner is ON. To stop the air
conditioner, push the switch again to return it to the original position.
The air conditioner cooling function operates only when the engine is running.
NHA331
DESCRIPTION Ð Overall System
HA-6

Lubrication Oil
Name: Nissan A/C System Oil Type R
Part number: KLH00-PAGR0
Maintenance of Oil Quantity in Compressor
The oil used to lubricate the compressor circulates through the
system with the refrigerant. Whenever any component of the sys-
tem is replaced or a large amount of gas leakage occurs, add oil
to the compressor to maintain the specified amount.
If oil quantity is not maintained properly, the following malfunctions
may result:
ILack of oil: May lead to a seized compressor
IExcessive oil: Inadequate cooling (thermal exchange impeded)
Checking and Adjusting
Adjust the oil quantity according to the flowchart shown below.
START
Can oil return operation be performed?
IA/C system works properly.
IThere is no evidence of a large amount
of oil leakage.
No
EYe s
Perform oil return operation, proceeding as follows:
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1. Start engine, and set the following conditions:
ITest condition
Engine speed: Idling to 1,200 rpm
A/C or AUTO switch: ON
Blower speed: Max. position
Temp. control: Optional [Set so that intake air temperature is 25 to
30ÉC (77 to 86ÉF).]
2. Perform oil return operating for about 10 minutes.
3. Stop engine.
CAUTION:
If excessive oil leakage is noted, do not perform the oil return operation.
Should the compressor be replaced?
No Yes
qA(Go to next page.)
Is there any part to be replaced?
(Evaporator, condenser, liquid tank or in
case there is evidence of a large amount
of oil leakage.)
No
EYe s
After replacing any of the following major components of the system, be sure
to add the correct amount of oil to the system.
Amount of oil to be added
*1: If compressor is replaced, addition of oil is included in the flow chart.
*2: If refrigerant leak is small, no addition of oil is needed. ªRatioº in this table
indicates the ratio of added oil to the overall amount of oil needed in the
system.
Carry out the A/C performance test.F
Part replacedOil to be added to system
Remarks
Amount of oil m(Imp fl oz)
Evaporator 75 (2.6) Ð
Condenser 75 (2.6) Ð
Liquid tank 5 (0.2)Add if compressor is
not replaced. *1
In case of refrigerant
leak30 (1.1) Large leak
Ð Small leak *2
H
H
H
H
H
LUBRICATION OIL Ð Checking and Adjusting
HA-22

Operation Check
The purpose of the operational check is to confirm that the system
is as it should be. The systems which will be checked are the
blower, mode (discharge air), intake air, temperature decrease,
temperature increase and A/C switch system.
CONDITIONS:
Engine running and at normal operating temperature.
PROCEDURE:
1. Check blower
1) Turn FAN CONTROL DIAL to 1.
Blower should operate at speed 1.
2) Then turn the DIAL to speed 2.
3) Continue checking blower speed until all speeds are checked.
4) Leave blower on speed 4.
2. Check discharge air
1) Turn AIR CONTROL DIAL toposition.
2) Confirm that all discharge air comes out of face vents.
3) Turn AIR CONTROL DIAL to
position.
4) Confirm that discharge air comes out of face vents and foot
vents.
5) Turn AIR CONTROL DIAL to
position.
6) Confirm that discharge air comes out of foot vents, with some
air from face vents.
7) Turn AIR CONTROL DIAL to
position.
8) Confirm that discharge air comes out of foot vents with some
air from defroster vents.
9) Turn AIR CONTROL DIAL to
position.
10) Confirm that all discharge air comes out of defroster vents, with
some air from face vents.
3. Check recirculation
1) Switch AIR RECIRCULATION SWITCH to ON position (Indica-
tor light ON).
2) Listen for intake door position change (you should hear sound
change slightly).
NHA333
NHA334
RHA035E
NHA335
DIAGNOSES Ð Overall System
HA-28

Performance Chart
TEST CONDITION
Testing must be performed as follows:
Vehicle location: Indoors or in the shade (in a well-ventilated place)
Doors: Closed
Door window: Open (Front driver side only)
Hood: Open
TEMP. control lever position: Max. COLD
AIR control lever position:
(Ventilation)
INTAKE lever position:
(Recirculation)
FAN lever: 4
Engine speed: 1,500 rpm
Time required before starting testing
after air conditioner starts operating:More than 10 minutes
TEST READING
Recirculating-to-discharge air temperature table
Inside air (Recirculating air)
at blower assembly inlet
Discharge air temperature at center ventilator
ÉC (ÉF)
Relative humidity
%Air temperature
ÉC (ÉF)
40-6025 (77) 9.8 - 11.5 (50 - 53)
30 (86) 13.8 - 15.9 (57 - 61)
35 (95) 17.9 - 20.3 (64 - 69)
60-8025 (77) 11.5 - 13.3 (53 - 56)
30 (86) 15.9 - 18.0 (61 - 64)
35 (95) 20.3 - 22.7 (69 - 73)
Ambient air temperature-to-compressor pressure table
Ambient air
High-pressure (Discharge side)
kPa (bar, kg/cm
2, psi)Low-pressure (Suction side)
kPa (bar, kg/cm2, psi) Relative humidity
%Air temperature
ÉC (ÉF)
40-8025 (77)1,451 - 1,608 (14.51 - 16.08,
14.8 - 16.4, 210 - 233)157 - 186 (1.57 - 1.86, 1.6 - 1.9,
23 - 27)
30 (86)1,569 - 1,804 (15.69 - 18.04,
16.0 - 18.4, 228 - 262)176 - 235 (1.76 - 2.35, 1.8 - 2.4,
26 - 34)
35 (95)1,834 - 2,138 (18.34 - 21.38,
18.7 - 21.8, 266 - 310)226 - 304 (2.26 - 3.04, 2.3 - 3.1,
33 - 44)
DIAGNOSES Ð Overall System
HA-30

Clutch pedal .............................................CL-3, 4, 5
Clutch release mechanism ...............................CL-9
Coil spring (rear) ......................................RA-14, 16
Collision diagnosis..........................................RS-57
Combination lamp, front, removal and
installation .....................................................BT-6
Combination lamp, rear, removal and
installation .....................................................BT-8
Combination meter (needle type) ...................EL-70
Combination meter removal and instal-
lation - See Instrument panel......................BT-16
Combination switch...................................EL-23, 24
Component Location (manual A/C) ..................HA-7
Compression pressure ...................................EM-10
Compressor clutch removal and
installation ...................................................HA-24
Compressor mounting ....................................HA-21
Connecting rod...............................................EM-73
Connecting rod bearing clearance.................EM-77
Connecting rod bushing clearance ................EM-73
Console box - See Instrument panel ..............BT-16
CONSULT for ABS .........................................BR-58
CONSULT for engine .............................EC-39, 327
CONSULT-II general information.....................GI-26
Control lever (M/T) .........................................MT-13
Control lever (Transfer) .....................................TF-8
Control sleeve position sensor .....................EC-414
Control valve (A/T) ........................................AT-113
COOL/F - Wiring diagram ............................EC-112
Coolant mixture ratio ...................MA-17, 20, 22, 31
Coolant replacement ...............MA-5, 17, 20, 22, 31
Cooling circuit (engine)...............................LC-9, 27
Cooling fan ...............................................LC-15, 33
Cooling fan control .......................................EC-109
Cooling fan relay ..........................................EC-426
Corrosion protection..........................................BT-5
Counter gear (M/T) .........................................MT-11
Counter gear (Transfer) ............................TF-10, 20
Cowl top ..........................................................BT-21
Cowl top cover ................................................BT-21
Crankcase emission control system -
See positive crankcase ventilation .....EC-23, 312
Crankcase ventilation system - See
Positive crankcase ventilation ............EC-23, 312
Crankshaft ......................................................EM-76
Crankshaft position sensor (TDC) .......EC-145, 385
Cylinder block ................................................EM-66
Cylinder head .................................................EM-52
D
Data link connector ................................EC-39, 327
Daytime light system ..........................EL-29, 30, 31
DEF - Wiring diagram ...................................EL-107
Defroster door control rod adjustment ...........HA-62
Diagnosis sensor unit .....................................RS-11
Diagnostic trouble code (DTC) for OBD
system ................................................EC-33, 321
Differential carrier assembly ....................PD-29, 53Differential carrier disassembly..........PD-18, 38, 40
Differential gear oil replacement .......MA-36, 38, 39
Dimensions ......................................................GI-31
D/LOCK - Wiring diagram .............................EL-140
Door glass .......................................................BT-10
Door lock .........................................................BT-10
Door mirror ......................................................BT-48
Door trim .........................................................BT-19
Door, front .......................................................BT-10
Door, rear ........................................................BT-12
Drive belt inspection ................................MA-20, 28
Drive chain (Transfer) .....................................TF-10
Drive pinion diff. inspection ......................PD-20, 42
Drive pinion height ...................................PD-21, 49
Drive plate runout ..........................................EM-94
Drive shaft ........................................................MA-5
Drive shaft (front)..................................FA-4, 12, 22
Driver air bag..................................................RS-14
Dropping resistor (A/T)....................................AT-86
Dual pressure switch..................................HA-9, 61
E
ECM input/output signal .........................EC-69, 346
ECM relay ......................................EC-80, 209, 353
ECMRLY - Wiring diagram ...........................EC-210
ECTS - Wiring diagram ..................................EC-96
EGR control (EGRC) - solenoid valve .........EC-431
EGR control valve ........................................EC-439
EGR volume control valve ...........................EC-222
EGVC/V - Wiring diagram ............................EC-225
Electrical unit ................................................Foldout
Electronic fuel injection pump ......................EC-318
Engine compartment .......................................BT-50
Engine control circuit diagram ...............EC-16, 302
Engine control component parts
location ...............................................EC-12, 300
Engine control module (ECM) ......EC-69, 121, 200,
202, 213, 346,
407, 444
Engine control system diagram and
chart....................................................EC-17, 303
Engine coolant temperature sensor
(ECTS)................................................EC-95, 361
Engine oil filter replacement..........MA-5, 20, 21, 30
Engine oil precautions .......................................GI-6
Engine oil replacement ......................MA-20, 21, 29
Engine removal ..............................................EM-63
Engine room - See Engine
compartment ...............................................BT-50
Engine serial number ......................................GI-30
Exhaust manifold ...........................................EM-18
Exhaust system ..........................................FE-4, 10
Exhaust system inspection ............................MA-36
Extension tube diff. ..................................PD-19, 28
Exterior ............................................................BT-21
Exterior lamp.............................................EL-45, 60
ALPHABETICAL INDEX
IDX-3

F
Fan switch ......................................................HA-60
F/FOG - Wiring diagram .................................EL-51
Final drive disassembly............................PD-15, 37
Final drive pre-inspection .........................PD-15, 37
Final drive removal and installation ...............PD-15
Finisher, interior - See Trim ............................BT-18
Finisher, rear panel .........................................BT-18
Floor trim .........................................................BT-18
Fluid temperature sensor (A/T) .....................AT-141
Fluids .............................................MA-5, 17, 20, 36
Flywheel (clutch) .......................................CL-11, 12
Flywheel runout..............................................EM-94
Fog lamp, front .........................................EL-51, 53
Fog lamp, rear ................................................EL-54
Fork rod (M/T) ................................................MT-13
Forward clutch...............................................AT-157
Front axle ....................................................FA-4, 13
Front bumper ....................................................BT-6
Front case (Transfer) ..................................TF-9, 23
Front combination lamp removal and
installation .....................................................BT-6
Front disc brake .............................................BR-26
Front door .......................................................BT-10
Front Door Trim...............................................BT-19
Front drive shaft (Transfer) .........................TF-9, 19
Front final drive disassembly (4WD) ..............PD-14
Front final drive removal and installa-
tion (4WD) ............................................PD-12, 13
Front fog lamp ..........................................EL-51, 53
Front passenger air bag .................................RS-17
Front seat ........................................................BT-34
Front seat belt ..................................................RS-4
Front seat belt pre-tensioner ..........................RS-12
Front side air bag ...........................................RS-18
Front suspension ........................................FA-4, 29
Fuel cut control (at no load & high
engine speed) .....................................EC-22, 311
Fuel cut solenoid valve ................................EC-376
Fuel cut system ............................................EC-232
Fuel filler lid.......................................................BT-8
Fuel filter replacement...................MA-5, 20, 23, 33
Fuel gauge..................................FE-3, 6, EL-72, 80
Fuel injection system .............................EC-20, 306
Fuel injection timing feed back (Elec-
tronic Fuel Injection Pump) ......................EC-192
Fuel precautions ................................................GI-6
Fuel pump and gauge ..............................FE-3, 6, 7
Fuel system ..................................................FE-3, 6
Fuel tank .......................................................FE-3, 6
Fuel temperature sensor ......................EC-123, 372
Fuse ................................................................EL-17
Fuse and fusible link box .............................Foldout
Fuse block ....................................................Foldout
Fusible link ......................................................EL-17GGarage jack and safety stand .........................GI-32
Gauges .....................................................EL-70, 71
Gear components (M/T) ........MT-11, 14, 16, 21, 23
Generator - See Alternator .............................SC-27
GLOW - Wiring diagram...............................EC-241
Glow control system.....................EC-239, 311, 389
Glow plug .............................................EC-239, 390
Glow relay ............................................EC-241, 396
Grease .........................................MA-17, 39, 40, 44
Ground distribution..........................................EL-18
H
Harness connector ............................................EL-3
Harness connector inspection .........................GI-19
Harness layout ............EL-247, 248, 264, 276, 278,
286, 287, 288, 289, 290
Hazard warning lamp................................EL-55, 56
Headlamp ......EL-26, 29, 30, 31, 37, 38, 39, 42, 43
Headlamp aiming control .............EL-37, 38, 39, 42
Headlamp washer .........................................EL-100
Headlining - See Roof trim .............................BT-20
Heat up switch..............................................EC-258
Heated seat .......................................BT-36, EL-128
HEATER - Wiring diagram .............................HA-41
HEATUP - Wiring diagram ...........................EC-259
Height (Dimensions) ........................................GI-10
HFC134a (R134a) system precaution .............HA-3
HFC134a (R134a) system service
procedure....................................................HA-15
HFC134a (R134a) system service tools ........HA-11
High clutch ....................................................AT-155
H/LAMP - Wiring diagram ............EL-26, 31, 39, 56
Hood..................................................................BT-6
Hood lock system .............................................BT-6
Horn ..............................................................EL-104
HORN - Wiring diagram................................EL-104
How to erase DTC for OBD system ......EC-33, 321
HSEAT - Wiring diagram...............................EL-128
I
Identification .....................................................HA-2
Identification plate .....................................GI-29, 30
Idle speed...............................................EC-50, 338
Idle speed inspection ...............................MA-20, 26
ILL - Wiring diagram .......................................EL-62
Illumination ................................................EL-61, 62
Injection nozzle ......................................EC-24, 313
Injection nozzle inspection ..................MA-5, 20, 25
Injection timing control valve ........................EC-380
INJPMP - Wiring diagram ...EC-126, 164, 171, 178,
185, 195, 235
Instrument panel .............................................BT-16
INT/L - Wiring diagram....................................EL-66
ALPHABETICAL INDEX
IDX-4