🏷️ Basic Information

Make:

Jaguar

Model:

XK Range

Model Year:

2003

Product Name:

Jaguar XK Range Network DTC Manual

Product Description:

Network DTC Summaries - Quick Reference Diagnostic Guide

Covered Codes Type:

Diagnostic Trouble Codes (DTCs)

Network Focus:

Vehicle network communication systems

👋 Introduction

Target User:

Jaguar dealerships, independent Jaguar specialists, advanced DIY technicians

Purpose:

To expedite the diagnosis of complex network communication faults on the XK range

Value Proposition:

Focuses on specific, often challenging diagnostic areas (network issues) for a premium vehicle, offering a specialized advantage over generic scan tool code definitions.

Feature 1:

Concise summaries of commonly encountered network DTCs

Feature 2:

Diagnostic flowcharts and logic for network fault isolation

Feature 3:

Cross-referencing of DTCs to likely affected systems and components

📋 Manual Details

Primary Coverage:

Network communication DTCs and their summaries

Secondary Coverage:

Diagnostic interpretation for network-related faults

Estimated Pages:

Approximately 150-200 pages (typical for a focused diagnostic guide)

Type:

Diagnostic Guide / DTC Summary Manual

Language:

English

Format:

Likely PDF or digital format, optimized for quick reference

📖 Manual Coverage

Communication Protocols:

CAN (Controller Area Network), LIN (Local Interconnect Network), possibly others relevant to 2003 Jaguar architecture

ECUs Involved:

ECM, TCM, ABS module, BCM, PCM, HVAC control, Infotainment modules, Instrument cluster, Body control modules

Diagnostic Focus:

Intermittent faults, communication errors, signal integrity issues

Diagnostic Workflow:

Step-by-step guidance for interpreting network DTCs

Troubleshooting Methodology:

Root cause analysis for network communication failures

Component Identification:

Brief identification of modules involved in specific DTCs

Depth:

Intermediate to Advanced. Focuses on fault code diagnosis rather than full component repair.

Diagnostic Tools Required:

OBD-II scanner capable of reading network specific codes, oscilloscope (potentially), multimeter

📊 Manual Specifications

File Type:

PDF

Searchability:

Text-searchable for rapid DTC lookup

Printability:

High resolution, suitable for printing key diagnostic pages

Binding Type:

N/A (Digital Format)

Paper Type:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Code:

AJ-V8 (various displacements for 2003 XK range)

Engine Type:

V8, naturally aspirated or supercharged (depending on XK model variant)

Displacement:

Typically 4.0L or 4.2L for 2003 models

Horsepower Range:

Approx. 294 hp (XK8) to 390 hp (XKR)

Torque Range:

Approx. 290 lb-ft (XK8) to 393 lb-ft (XKR)

Fuel Delivery:

Sequential multi-port fuel injection (SFI)

Fuel Type:

Unleaded Gasoline (Premium Recommended)

🔧 Transmission

Transmission Type:

5-speed ZF automatic transmission (e.g., ZF 5HP24)

Optional Transmission:

N/A for 2003 XK models

Transmission Modes:

Sport mode, Winter mode

Transmission Fluid Spec:

Jaguar XT-8 QX or ZF Lifeguardfluid 5

📐 Dimensions

Body Styles:

Coupe (XK8/XKR) and Convertible (XK8/XKR)

Wheelbase:

Approx. 102.4 inches (2600 mm)

Length:

Approx. 187.4 inches (4760 mm)

Width:

Approx. 70.4 inches (1788 mm)

Height:

Approx. 52.0 inches (1320 mm)

Curb Weight:

Approx. 3,600 - 3,900 lbs (1630 - 1770 kg), depending on body style and engine

🛡️ Safety Features

NHTSA Rating:

Specific NHTSA ratings for 2003 models not readily available, but generally considered safe for its era.

Active Features List:

Traction Control System (TCS), Dynamic Stability Control (DSC), Anti-lock Braking System (ABS), Electronic Brake Force Distribution (EBD)

Passive Features List:

Front airbags, side-impact airbags, seatbelt pre-tensioners, reinforced body structure

💡 Technology Features

Infotainment System:

Jaguar Premium Audio System, CD player, optional satellite navigation

Driver Assistance Features:

Cruise control, Parking sensors (rear, optional)

Connectivity Options:

Limited by era, but includes diagnostics via OBD-II port and network communication protocols

Chassis Control Systems:

Adaptive Variable Suspension (AVS) on some models,CATS (Computer Active Technology Suspension)

🔧 Maintenance

Oil Change Interval:

Typically 5,000-7,500 miles or 12 months, whichever comes first

Transmission Fluid Interval:

Check owner's manual, but often recommended around 50,000-70,000 miles

Engine Oil Spec:

Jaguar M2C1004-A or equivalent (e.g., Castrol SLX Professional 0W-30)

Coolant Spec:

Jaguar specification coolant (Ethylene Glycol based, pink)

Brake Fluid Spec:

DOT 4

Issue 1:

Timing chain tensioners (plastic type can degrade, particularly on earlier 4.0L engines - revised metal tensioners recommended)

Issue 2:

Nikasil cylinder liners (early 4.0L engines, later models used Alusil, though '99+ 4.0L are generally less susceptible due to fuel changes; concern primarily related to poor fuel quality or overheating).

Issue 3:

Supercharger belt and pulley wear (on XKR models)

Issue 4:

Electrical gremlins, especially related to the CAN bus network

📚 Vehicle History

Heritage:

Jaguar has a long-standing reputation for producing luxurious and sporting grand tourers.

Previous Generation:

Preceded by the XJS, which itself replaced the E-Type. The XK8 (X100) was a significant departure, returning to a more classic Jaguar GT aesthetic.

Introduction Year:

The X100 generation XK8 was introduced in 1996.

Production Period For Gen:

1996-2006

Manufacturing Location:

Coventry, United Kingdom

🏆 Awards & Recognition

Award 1:

Car and Driver's 10Best for 1997 (for the XK8)

Award 2:

Generally well-regarded as a luxurious and stylish GT coupe/convertible in its class.