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Glossary

  • Z – Jaguar Abbreviations, Acronyms and Terms
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  • W – Jaguar Abbreviations, Acronyms and Terms
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  • T – Jaguar Abbreviations, Acronyms and Terms
  • S – Jaguar Abbreviations, Acronyms and Terms
  • R – Jaguar Abbreviations, Acronyms and Terms
  • Q – Jaguar Abbreviations, Acronyms and Terms
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  • N – Jaguar Abbreviations, Acronyms and Terms
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  • K – Jaguar Abbreviations, Acronyms and Terms
  • J – Jaguar Abbreviations, Acronyms and Terms
  • I – Jaguar Abbreviations, Acronyms and Terms
  • H – Jaguar Abbreviations, Acronyms and Terms
  • G – Jaguar Abbreviations, Acronyms and Terms
  • F – Jaguar Abbreviations, Acronyms and Terms
  • E – Jaguar Abbreviations, Acronyms and Terms
  • D – Jaguar Abbreviations, Acronyms and Terms
  • C – Jaguar Abbreviations, Acronyms and Terms
  • B – Jaguar Abbreviations, Acronyms and Terms
  • A – Jaguar Abbreviations, Acronyms and Terms

Instructions & Guides

  • Zeus Braking Instructions Vented Brakes
  • 5 Speed Gearbox Instructions for E-Type
  • Zeus Braking Instructions
  • C-26767 Brake Master Cylinder Instructions
  • LR-18230 Brake Servo Installation Instructions
  • SU-563 HD6 Carburetor Kit Instructions
  • SU-524 HD8 Carburetor Kit Instructions
  • JLM-11698-K XJ40 Shock Conversion Kit Instructions
  • Fender Trim Moldings Installation Instructions
  • FAN-42 10″ Fan Installation Instructions
  • C2N-2266 XK8 Wind Deflector Instructions
  • C2C-11804-PR 2004 & Up XJ8 Mesh Grille Insert Instructions
  • BBC-88989-S-PR XJ40 Mesh Grille Installation Instructions
  • BD-22732 E-Type Dash Fitting Instructions
  • C-27537 Battery Instructions
  • C-2767 Battery Instructions
  • ANT-1 Antenna Installation Instructions
  • LHD-4120-AA Antenna Installation Instructions
  • NAB-900 Alternator Instructions
  • OF-19-A Oil Filter Adapter Instruction Sheet
  • OF-14-D Oil Filter Adapter Instruction Sheet
  • C-19687-42CONV Installation Instructions
  • 31250 Turn Signal Switch Instruction Sheet
  • 4212-554 Brake Master Cylinder Diagram
  • 5 Speed Gearbox Instructions
  • Cheney Hose Clamps Installation Tips
  • ABS Accumulator Ball Instructions
  • 700-0300 Fast XR700 V12 Jaguar Installation Instructions
  • DAC-4090 Antenna Replacement Instructions
  • LPG-XJS Leaper Hood Ornament Installation Instructions
  • C2Z-1126 XF Bonnet Leaper Installation Instructions
  • C2N-2752 XK8 Mesh Grille Insert Instructions
  • XK8 Wind Deflector Installation Instructions
  • MJA-2170-BD-K Urethane Shock Mount Kit Installation Instructions
  • MNC-2168-69-K Upper Shock Bushing Kit Installation Instructions
  • Fog Lamp Lens Installation Instructions
  • XJ40 Tail Light Lens Install Instructions
  • HNA-5502-EA-PR XJ6 Upper Mesh Grille Insert Instructions
  • HNC-5502-CA-PR XJ8 Mesh Grille Insert Instructions
  • XR8-46158 S-Type Lower Mesh Grille Instructions
  • 34542-CONV E-Type MK Brake Lamp Switch Conversion
  • 33356 Starter Relay 22RA Diagram
  • FAN-38 16″ Fan Installation Instructions
  • LED-XKE-TS Front Turn Signal LED Lights
  • LED-E2-E3 LED Tail Light Instructions
  • LED-E1 LED Tail Light Instructions
  • LED-140-150 LED Tail Light Instructions
  • LED-XK120 LED Tail Light Instructions
  • CTE-3109 Electric Clock Instructions

Reference Documents

  • C2242 Cylinder Head
  • Speedometer Calibration Check
  • Permastar Chrome Care
  • XJS Convertible Top Lift Cylinder Installation Tips
  • V12 E-Type Operators Manual Versions
  • Jaguar Color Guide PDF

Diagrams

  • XJS Fuel Tanks Infographic
  • Engine Block Numbers Diagram
  • Cylinder Head Identifier Diagram
  • C-17427 Fan Motor Wiring Diagram
  • A-1121-N Alternator Diagram
  • 37076 Voltage Regulator Diagram

Catalogs

  • Welsh XJ40 Catalog
  • Welsh XJ6 Catalog
  • Welsh XJS Catalog
  • Welsh General Catalog
  • Home
  • Glossary

I – Jaguar Abbreviations, Acronyms and Terms

This glossary was compiled by Don B at jaguarforums.com and is reproduced here
with his permission

I = Symbol for Current in electronics equations
I6 = Inline six-cylinder engine, Straight Six engine
IA = Intake Air
IAC = Idle Air Control or Idle Air Control Valve (IACV), see also ISC, ISCM, ISSM
IACV = Idle Air Control Valve (IAC), see also ISC, ISCM, ISSM
IAT = Intake Air Temperature, Intake Air Temperature Sensor (IATS, ACT, CTS, MAT, MCT, VAT)
IATS = Intake Air Temperature Sensor (IAT, ACT, CTS, MAT, MCT, VAT)
IBWM = Int’l Bureau of Weights and Measures, Bureau International des Poids et Mesures (BIPM)
IC = Instrument Cluster (IP, IPK, ICCM), Internal Combustion, Industry/Industrie Canada, integrated circuit
ICCM = Instrument Control Center Module (IC, IP, IPK)
ICE = In-Car Entertainment System
ICM = Ignition Control Module (ICU)
ICU = Ignition Control Unit (ICM)
ID or I.D. = Identification, or Inside Diameter (see OD)
Idle = Tick Over, or the engine speed at idle
IDM = Injector Driver Module
IDS = Integrated Diagnostic Software, Ford/JLR computer-based diagnostics (See PDU, SDD, WDS)
i.e. = id est (Latin): that is, that is to say
IFS = Independent Front Suspension
IG = Ignition
IGN = Ignition
IIABDFI = “If It Ain’t Broken Don’t Fix It” (IIIBDFI)
IIRC = “If I recall correctly”
IIIBDFI = “If It Isn’t Broken Don’t Fix It” (IIABDFI)
ILSAC = Int’l Lubricant Standardization & Approval Committee, motor oil standards, see ACEA, API
Imax = Current at which a fuse melts; Breaking Capacity, Interrupting Rating, Short-Circuit Rating
Impeller = Bladed rotor for transmitting motion to a fluid, as in a water pump, torque converter, etc.
Imperial = British Imperial measurement units: Inch, Foot, Yard, Mile, Quart, Gallon, Pound (SAE)
IMT = Intake Manifold Tuning Valve (see VIS)
IMT = Valve Intake Manifold Tuning Valve; Valve 1 = Top, Valve 2 = Bottom
IMHO = In my humble opinion
IMO = In my opinion
IMT = Intake Manifold Tuning Valve, LH or RH (LHIMT, RHIMT)
In Good Nick = In good condition
Indicators = Direction Indicators, Turn Signals, Signals (DI)
inHg = Inches of Mercury, unit of pressure, measure of engine manifold vacuum, 1 inHg = 3386.389 Pa
Inline Six = Straight Six engine (I6)
Interactive Voice = Jaguar voice-recognition control system
Interstate = Autobahn, Freeway, Highway, Main Road, Motorway, Parkway
Interrupting Rating = Current at which a fuse melts; Imax, Breaking Capacity, Short-Circuit Rating
Int’l = International
I/O = Input/Output
IP = Injection Pressure, Injector Pressure Sensor, Fuel Injection Pressure Sensor
IP or I/P = Instrument Pack or Panel (IC, ICCM, IPK)
IPC = Ignition Primary Control (see ISC)
IPD = Injector Pulse Duration (On Time, Pulsewidth, Pulse Width)
IPDA = Definition not yet known, probably diesel-related; from p. 208 of X350 Owner’s manual
IPR = Ignition Positive Relay
IPS = Injection Pressure Sensor, Fuel Injection Pressure Sensor
IPK = Instrument Pack (IC, IP)
IR = Infrared, radiant energy/EMR with wavelengths longer than visible light (see EMR, UV)
IRS = Independent Rear Suspension, Jaguar’s, designed by Bob Knight, is one of the world’s best
IS = Inertia Switch, Intrusion Sensor or Intrusion Sensor Module (ISM)
ISC = Idle Speed Control (see also IAC, IACV, ISCM, ISSM)
ISC = Ignition Secondary Control (see IPC)
ISCM = Idle Speed Control Motor (ISSM), see also ISC, IAC, IACV
ISM = Intrusion Sensor Module (IS)
ISR = Idle Speed Reference
ISSM = Idle Speed Stepper Motor (ISCM), see also IAC, IACV, ISC, ISCM)
ISO = International Standards Organization, establishes various industrial standards
ISO = Serial Data Link Network (ISO 9141)
ISO Relay = Relay conforming to ISO automotive relay standards (ISO, Mini ISO & Micro ISO sizes)
ISO 9001 = Fundamental quality management systems & standards for automotive makers & suppliers
ISOFIX = Child safety seat restraint system
ISO 15765 CAN = Bosch protocol required on all U.S. cars from 2008 (see CAN, CAN ISO 15765)
ISO/TS 16949 = Quality assurance standard for OEM parts suppliers that superseded QS9000
ISO 9141 = Serial Data Link Network
ISU = International System of Units (SI)
ITA = Ignition Timing Advance (measured in degrees)
IVT = In-Vehicle Temperature, In-Vehicle Temperature Sensor (see IVTH, IVTS, IVTHS)
IVTH = In-Vehicle Temperature and Humidity, In-Vehicle Temperature and Humidity Sensor
IVTHS = In-Vehicle Temperature and Humidity Sensor (IVT, IVTH, IVTS)
IVTS = In-Vehicle Temperature Sensor (see IVT, IVTH, IVTHS)

Updated on March 21, 2022
J – Jaguar Abbreviations, Acronyms and TermsH – Jaguar Abbreviations, Acronyms and Terms

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