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Isuzu N-Series. Manual - part 833

GENERAL INFORMATION 0A-17

TERMS AND ABBREVIATIONS

Term Definition

Abbreviations Charts

TERM

DESCRIPTION

DIMENSION

The standard dimension values to be observed when manufacturing.

STANDARD

The standard values to be observed when carrying out service operations, including inspection,
adjustment, assembly and installation.

LIMIT

The maximum or minimum values, which must not be exceeded when service operations are car-
ried out.
If this value is exceeded, replacement or repair is required.

WARNING:

If not observed, danger of death or serious injury will result.

CAUTION:

If not observed, danger of injury or accident will result.

IMPORTANT:

If not observed, normal performance of relevant parts and system is not guaranteed, and failure
of the vehicle may result.

NOTE:

Matters, which should be specially mentioned.

ABBREVIATION

DESCRIPTION

2L Shoe Brake

2WD, 4

×2

Two Wheel Drive

4WD, 4

×4

Four Wheel Drive

A/C

Air Conditioning

A/F

Air Fuel Ratio

A/T, AT

Automatic Transmission

ABDC

After Bottom Dead Center

ABS

Antilock Brake System

Alternating Current

ACC

Accessory

ACG

Alternating Current Generator

ACL

Air Cleaner

ACT

Actuator

ANT

Antenna

Accelerator Position

API

American Petroleum Institute

ASM (Assy)

Assembly

ASR

Anti-slip Regulator

ASSIT

Assistant / Assist

ATDC

After Top Dead Center

ATF

Automatic Transmission Fluid

B/K

Brake

B+

Battery Positive Voltage

BAL

Balance

BAT, BATT

Battery

BBDC

Before Bottom Dead Center

Birfield Joint

BKT, BRKT

Bracket

BRG, Brg

Bearing

BTDC

Before Top Dead Center

C/B

Circuit Braker

C/U

Control Unit

CAM

Camshaft

CAN

Control Unit Communication
Type

CFS

Clutch Free System

CKP

Crankshaft Position

CMP

Camshaft Position

CNG

Compressed Natural Gas

Carbon Monoxide

CONN

Connector

CPU

Central Processing Unit

CSD

Cold Starting Device

D2L

D2L Shoe Brake

Direct Current

Direct Drive

DFI

Diesel Fuel Injection

Direct Injection

DLC

Data Link Connector

DMM

Digital Multi-meter

DOJ

Double Offset Joint

DPF

Diesel Particulate Filter

ABBREVIATION

DESCRIPTION

0A-18 GENERAL INFORMATION

DTC

Diagnostic Trouble Code

DVM

Digital Voltage Meter

E/B

Exhaust Brake

ECM

Engine Control Module

ECT

Engine Coolant Temperature

ECU

Engine Control Unit

EDU

Engine Driver Unit

EEPROM

Electrically Erasable and Pro-
grammable Read Only Memory

EGR

Exhaust Gas Recirculation

EHCU

Electronic Hydraulic Control Unit

EMI

Electromagnetic Interference

ESD

Electrostatic Discharge

EVAP

Evaporation

EVRV

Electric Vacuum Regulating
Valve

Exh, EXH

Exhaust

F/B

Feedback

F/C

Fuel Cut

F/L, FL

Fusible Link

FCS

Fuel Cut System

FICD

Fast Idle Control Device

FIO

Fast Idle Open

FLW

Fusible Link Wire

FRZ

Freezer

Fuel Temperature

Ft, FRT

Front

FWD

Front Wheel Drive

GEN

Generator

GND

Ground

GVW

Gross Vehicle Weight

GVM

Gross Vehicle Mass

H/L

Head Lamp

HAB

Hydraulic Assist Brake

Hydrocarbons

Heavy Duty

HID

High Intensity Discharge Head-
lamp

HO 2 S

Heated Oxygen Sensor

HAS

Hill Start Aid

Hypoid Tandem

HUD

Head-Up Display

ABBREVIATION

DESCRIPTION

HVAC

Heater Ventilation Air Condi-
tioner

I/PUMP, I/P

Injection Pump

IAC

Idle Air Control

IAT

Intake Air Temperature

Integrated Circuit

ID Plate

Identification Plate

IGN / IG

Ignition

Intake

INJ

Injection

ISC

Idle Speed Control

ISM

Intake Step Motor

ISO

International Standardization
Organization

ISP

Intake Shutter Position

ITP

Intake Throttle Position

J/B

Junction Block

J/C

Joint Connector

JIS

Japan Industrial Standards

L/H, LH

Left-Hand

LCD

Liquid Crystal Display

LED

Light Emitting Diode

LEV

Low Emission Vehicle

LPG

Liquefied Petroleum Gas

LSD

Limited Slip Differential

LSPV

Load Sensing Proportioning
Valve

LT Shoe Brake

LWB

Long Wheel Base

M/T, MT

Manual Transmission

M/V

Electromagnetic Valve

MAP

Manifold Absolute Pressure

Max

Maximum

MIL

Malfunction Indicator Lamp

Min

Minimum

MPU

Micro Processing Unit

Normally Closed

Engine RPM

Normally Open

Nox

Nitrogen Oxides

O/D

Over Drive

O2S

O2 Sensor

ABBREVIATION

DESCRIPTION

GENERAL INFORMATION 0A-19

Introduction of SI (International System of
Unit)

The SI was founded with an aim to standardize various
unit systems, e.g. the metric system, pound system etc.,
and to get rid of complicated conversion of units using
calculators.
Introduction of the SI in Japan is standardized in JIS-Z-
8203.
In this manual, all the units are indicated based on the
International System of Units, along with conventional
units in ( ).

• SI is the abbreviation of “Le Systeme Internationale

d’Unites.”

OBD

Onboard Diagnosis

ODM

Output Driver Module

OEM

Original Equipment Manufactur-
ing

OHC

Overhead Camshaft

OHV

Overhead Valve

OPT

Option

Oil Temperature

Poles

P/L, PL

Pilot Lamp

P/S

Power Steering

PCM

Power Train Control Module

PCV

Positive Crankcase Ventilation

P-I

Proportion / Integration

PID

Control Type

Particulate Matter

POS

Position

PTO

Power Take Off

PWM

Pulse Width Modulation

Quantity (Fuel Injection Quan-
tity)

QDM

Quad Driver Module

QOS

Quick On Start Module

QWS

Quick Warming Up System

R/H, RH

Right-Hand

R/L

Relay

RAM

Random Access Memory

REF

Reference

RET

Retarder

REV

Reverse

ROM

Read Only Memory

Rail Pressure

Rr, RR

Rear

RWD

Rear Wheel Drive Vehicle

S/M

Step Motor

SAE

Society of Automotive Engineers

SBF

Slow Blow Fuse

SCV

Suction Control Valve

SIG

Signal

SLD

Shield

SPV

Spill Control Valve

SRS

Supplemental Restraint System

ABBREVIATION

DESCRIPTION

Starter / Start

STD

Standard

STRG

Steering

Switch

SWB

Short Wheel Base

T/F

Transfer

TCC

Torque Converter Clutch

TCM

Transmission Control Module

TCV

Timing Control Valve

TDC

Top Dead Center

TEMP

Temperature

TFT

Transmission Fluid Temperature

Throttle Position

TWV

Two Way Valve

V/P

Vacuum Pump

Battery Voltage

Vcc

Collector Voltage

VCI

Vehicle Communication Inter-
face

VIM

Vehicle Interface Module

VIN

Vehicle Identification Number

VOL, Vol.

Volume

VSS

Vehicle Speed Sensor

VSV

Vacuum Switching Valve

W/B, WB

Wheel Base

W/H

Wire / Harness

W/L

Warning Lamp

WOT

Wide Open Throttle

ABBREVIATION

DESCRIPTION

0A-20 GENERAL INFORMATION

STANDARD BOLTS TIGHTENING

Isuzu Standard Fixing Torque Specifications

The torque values given in the following table should be applied where a particular torque is not specified.

⋅m (kg⋅m/lb⋅ft)

Strength Class

4.8

Bolt Identification

Hexagon Head Bolt

Flange Bolt

Hexagon Head Bolt

Flange Bolt

× 1

3.9 — 7.8

(0.4 — 0.8/2.9 — 5.8)

4.6 — 8.5

(0.5 — 0.9/3.4 — 6.3)

4.9 — 9.8

(0.5 — 1.0/3.6 — 7.2)

5.7 — 10.6

(0.6 — 1.1/4.2 — 7.8)

× 1.25

7.8 — 17.7

(0.8 — 1.8/5.8 —

13.1)

10.5 — 19.6

(1.1 — 2.0/7.7 —

14.5)

11.8 — 22.6

(1.2 — 2.3/8.7 —

16.7)

13.5 — 25.0

(1.4 — 2.5/10 —

18.4)

M10

× 1.25

20.6 — 34.3

(2.1 — 3.5/15.2 —

25.3)

23.1 — 38.5

(2.4 — 3.9/17 —

28.4)

27.5 — 46.1

(2.8 — 4.7/20.3 —

34)

31.0 — 51.7

(3.2 — 5.3/22.9 —

38.1)

*M10

× 1.5

19.6 — 33.3

(2.0 — 3.4/14.5 —

24.6)

22.3 — 37.2

(2.3 — 3.8/16.4 —

27.4)

27.5 — 45.1

(2.8 — 4.6/20.3 —

33.3)

30.3 — 50.4

(3.1 — 5.1/22.3 —

37.2)

M12

× 1.25

49.0 — 73.5

(5.0 — 7.5/36.1 —

54.2)

54.9 — 82.3

(5.6 — 8.4/40.5 —

60.7)

60.8 — 91.2

(6.2 — 9.3/44.8 —

67.3)

68.1 — 102.1

(6.9 — 10.4/50.2 —

75.3)

*M12

× 1.75

45.1 — 68.6

(4.6 — 7.0/33.3 —

50.6)

51.0 — 76.5

(5.2 — 7.8/37.6 —

56.4)

56.9 — 84.3

(5.8 — 8.6/42 —

62.2)

62.7 — 94.0

(6.4 — 9.6/46.2 —

69.3)

M14

× 1.5

76.5 — 114.7

(7.8 — 11.7/56.4 —

84.6)

83.0 — 124.5

(8.5 — 12.7/61.2 —

91.8)

93.2 — 139.3

(9.5 — 14.2/68.7 —

102.7)

100.8 — 151.1

(10.3 — 15.4/74.3 —

111.4)

*M14

× 2

71.6 — 106.9

(7.3 — 10.9/52.8 —

78.8)

77.2 — 115.8

(7.9 — 11.8/56.9 —

85.4)

88.3 — 131.4

(9.0 — 13.4/65.5 —

96.9)

94.9 — 142.3

(9.7 — 14.5/70 —

105)

M16

× 1.5

104.0 — 157.0

(10.6 — 16.0/76.7 —

115.8)

115.6 — 173.3

(11.8 — 17.7/85.3 —

127.8)

135.3 — 204.0

(13.8 — 20.8/99.8 —

150.5)

150.1 — 225.2

(15.3 — 23.0/110.7

— 166.1)

*M16

× 2

100.0 — 149.1

(10.2 — 15.2/73.8 —

110)

109.4 — 164.2

(11.2 — 16.7/80.7 —

121.1)

129.4 — 194.2

(13.2 — 19.8/95.4 —

143.2)

142.5 — 213.8

(14.5 — 21.8/105.1

— 157.7)

M18

× 1.5

151.0 — 225.6

(15.4 — 23.0/111.4

— 166.4)

—

195.2 — 293.2

(19.9 — 29.9/144 —

216.3)

—

*M18

× 2.5

151.0 — 225.6

(15.4 — 23.0/111.4

— 166.4)

—

196.1 — 294.2

(20.0 — 30.0/144.6

— 217)

—

M20

× 1.5

206.0 — 310.0

(21.0 — 31.6/151.9

— 228.6)

—

269.7 — 405.0

(27.5 — 41.3/198.9

— 298.7)

—

*M20

× 2.5

190.2 — 286.4

(19.4 — 29.2/140.3

— 211.2)

—

249.1 — 374.6

(25.4 — 38.2/183.7

— 276.3)

—

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