🏷️ Basic Information

Make:

Isuzu

Model:

TF

Generation:

RA Series (Third Generation)

Model Years Covered:

2004, 2005, 2006, 2007

Chassis Code:

TF RA Series

👋 Introduction

Market Position:

The Isuzu TF, also known globally under various names (e.g., Chevrolet Colorado in North America, Holden Rodeo in Australia), was a highly popular light commercial vehicle and pickup truck, known for its durability, robustness, and value. It competed in a segment dominated by Japanese manufacturers.

Target Audience:

Small business owners, tradespeople, rural users, and individuals seeking a rugged, affordable, and reliable pickup for work and general utility.

Competitive Analysis:

Competed against vehicles like the Toyota Hilux, Nissan Navara (Frontier), Mitsubishi Triton (L200), Ford Ranger, and Mazda BT-50. The TF series often distinguished itself with strong diesel engine options and a utilitarian, no-frills approach.

Key Features:

Renowned for its reliable Isuzu diesel engines, sturdy ladder-frame chassis, capable four-wheel-drive systems, and practical utility. The RA series represented a significant update in styling and features for the TF platform.

📋 Manual Details

Coverage Areas:

North America, Australia, Asia, South Africa (specific regional variants may apply)

Page Count:

Approximately 1500+ pages (typical for comprehensive service manuals)

Manual Type:

Factory Service Manual / Repair Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Systems Covered:

Engine mechanical, engine management (EFI/DI), fuel system, cooling system, exhaust system, ignition system, lubrication system, transmission (manual & automatic), clutch, driveline, front axle, rear axle, suspension (front & rear), steering system, braking system (ABS included), chassis electrical, body electrical, HVAC, body panels, interior trim, diagnostics, emissions control, wiring diagrams

Emissions Control Systems:

Detailed diagnosis and repair procedures for emission control components, catalytic converters, oxygen sensors, evaporative emission control (EVAP) systems, and EGR systems.

Body And Interior:

Includes procedures for door panel removal, seat adjustments, dashboard disassembly, exterior trim replacement, bumper repair, and glass replacement.

Procedures Included:

Routine maintenance, inspection, troubleshooting, component removal and installation, disassembly and assembly, adjustments, diagnostics, component testing, specifications, torque values, fluid capacities, wiring schematic interpretation

Diagnostics And Troubleshooting:

Comprehensive diagnostic trouble code (DTC) identification and resolution, symptom-based troubleshooting guides, electrical circuit testing, pressure testing, and component-specific diagnostic procedures.

Technical Depth:

Comprehensive; covers from basic fluid changes and filter replacements to complex engine and transmission overhauls, electrical system diagnostics, and structural repairs.

Special Tools Required:

Identifies and specifies the use of Isuzu-specific and general automotive specialty tools for various repair procedures.

📊 Manual Specifications

File Format:

High-resolution PDF, searchable text, bookmarked chapters for easy navigation

File Size:

Typically 100MB - 300MB, depending on the number of diagrams and included sections.

Print Quality:

Optimized for digital viewing and high-quality printing. Clear diagrams and text.

Binding Type:

Digital PDF (N/A for printed; if printed, would be comb-bound or perfect bound for ease of use in a workshop)

Paper Type:

Digital PDF (N/A for printed; if printed, would typically be on durable, grease-resistant paper)

⚙️ Engine Specifications

Primary Engine 2004-2007:

4JJ1-TC (3.0L DOHC Common Rail Turbo Diesel)

Horsepower 4Jj1-Tc:

Approximately 130-145 hp (varies by specific market tune and year)

Torque 4Jj1-Tc:

Approximately 220-250 lb-ft (varies by specific market tune and year)

Compression Ratio 4Jj1-Tc:

Typically around 18.5:1 for the 4JJ1-TC diesel engine.

Fuel System 4Jj1-Tc:

High-pressure common rail direct injection (CRDI) with electronic fuel injection (EFI) and turbocharging

Other Engines Available:

Petrol variants also available globally, typically 2.2L, 2.4L, and 3.2L gasoline engines. Manual focuses on the specific engines offered in the target market (likely diesel for the 'RA' designation in many regions).

Engine Codes Diesel:

4JJ1-TC (3.0L Common Rail Diesel), potentially 4JA1-TC (2.5L Turbo Diesel) on earlier or specific market variants within the generation.

Engine Codes Petrol:

4ZE1 (2.6L SOHC), C22NE (2.2L SOHC), C24SE (2.4L DOHC) - depending on global market.

🔧 Transmission

Standard Transmission:

5-speed Manual Transmission

Optional Transmission:

4-speed Automatic Transmission (less common on base models)

Drivetrain Options:

Rear-Wheel Drive (RWD) and Selectable Four-Wheel Drive (4WD) with high/low range transfer case

Manual Transmission Gear Ratios:

Specific ratios vary by model and differential. The manual will detail these for optimal performance and fuel economy.

Automatic Transmission Gear Ratios:

Typically 4 speeds, specific ratios detailed in the manual.

📐 Dimensions

Body Styles:

Single Cab, Extended Cab, Crew Cab

Wheelbase Options:

Varies by cab configuration, typically 125-138 inches

Front Track:

Specific data available in the manual, varies by axle type and configuration.

Rear Track:

Specific data available in the manual, varies by axle type and configuration.

Gross Vehicle Weight Rating Gvw:

Approx. 5,000 - 6,500 lbs (varies by configuration and market)

Curb Weight:

Approx. 3,500 - 4,500 lbs (varies by configuration)

Towing Capacity:

Varies significantly by configuration and market, typically 3,000 - 6,000 lbs. Manual will provide specific ratings.

Payload Capacity:

Varies, typically 1,000 - 2,000 lbs. Manual will provide specific ratings.

Bed Lengths:

Standard, Long, and possibly Crew Cab specific bed lengths, typically ranging from 6 to 8 feet.

🛡️ Safety Features

Crash Test Ratings:

Varies by market and testing agency (e.g., NHTSA, IIHS). Generally considered robust for its class, but older designs may not meet modern stringent standards.

Active Safety Features:

ABS (Anti-lock Braking System) typically standard or optional on higher trims; limited stability control systems available on later models.

Brake System Type:

Front: Ventilated discs. Rear: Drum brakes (most common). Four-wheel disc brakes available on higher trims or specific models.

Passive Safety Features:

Front airbags for driver and passenger. Seatbelt pre-tensioners.

Seat Configuration:

Front bucket seats or bench seat, rear bench seat in Extended and Crew Cab models.

💡 Technology Features

Infotainment Features:

Basic AM/FM radio with CD player, optional upgraded sound systems. Auxiliary inputs less common on early models.

Display Type:

Basic LCD screen for radio, or no screen for older units. No touchscreens.

Driver Assistance Features:

Limited; primarily focused on ABS. No advanced electronic driver aids like adaptive cruise control, lane departure warning, etc.

Cruise Control:

Available on higher trim levels.

Connectivity Options:

Standard power outlets (cigarette lighter type). Bluetooth connectivity not typically factory fitted for this era.

🔧 Maintenance

Oil Change Interval Diesel:

Typically every 5,000 - 7,500 miles or 6-12 months for diesel, depending on driving conditions. Check manual for specific recommendation.

Timing Belt Chain:

4JJ1-TC engine utilizes a timing chain, generally considered maintenance-free for the life of the engine.

Fuel Filter Replacement Diesel:

Recommended replacement every 15,000 - 30,000 miles, or as per manual, crucial for common rail systems.

Brake Fluid Flush:

Typically every 2-3 years or 30,000 miles, depending on conditions and manufacturer recommendation.

Engine Oil Specification Diesel:

API CJ-4 or CK-4 rated diesel engine oil, SAE 15W-40 or 5W-30 (depending on climate/manufacturer recommendation). Check specific oil viscosity for extreme temperatures.

Coolant Type:

Isuzu specified Long Life Coolant (LLC) or equivalent ethylene glycol-based coolant with demineralized water. Often a green or blue coolant. Check manual for exact spec and color.

Transmission Fluid Manual:

API GL-4 or GL-5 gear oil, SAE 75W-90 or 80W-90.

Transmission Fluid Automatic:

Dexron III or equivalent ATF.

Power Steering Fluid:

Typically Dexron II/III compatible fluid or a specific power steering fluid. Manual will specify.

Brake Fluid Type:

DOT 3 or DOT 4, depending on the specific brake system and market requirements. The manual will provide the precise specification.

Common Issues Diesel Engines:

EGR valve clogging, turbocharger issues (rare if maintained), injector wear over very high mileage, glow plug failure in cold climates.

Common Issues Suspension Steering:

Ball joint wear, tie rod end wear, leaf spring fatigue (especially under heavy loads), power steering pump leaks.

Common Issues Electrical:

Corrosion on grounds, intermittent lighting issues, starter motor problems, alternator failures at higher mileage.

Common Issues Body Chassis:

Rust on the frame, particularly in areas with salt exposure, cab mount corrosion, bed floor rust.

Oil Filter Part Number Example:

Mann Filter W 940/5, Bosch 3 325 103 146, Wix 57046 (verify for specific vehicle fitment)

Air Filter Part Number Example:

Mann Filter C 23 301, Bosch 1 457 433 737, Wix 42787 (verify for specific vehicle fitment)

📚 Vehicle History

Brand Heritage:

Isuzu has a long-standing reputation for producing durable and reliable diesel engines and commercial vehicles. The Isuzu TF platform dates back to the 1980s, with continuous evolution.

Model Evolution Tf:

The TF generation (known as N-Series globally) was a significant redesign. The RA series represents the latter part of this generation, often incorporating updated styling, interior features, and engine technology, particularly the advanced 4JJ1 diesel.

Rebadging Partnerships:

Significant rebadging under GM's umbrella, including Chevrolet Colorado, GMC Canyon, Holden Rodeo/Colorado, and others, demonstrating Isuzu's role as an OEM supplier.

Production Locations:

Manufactured in various Isuzu plants globally, including Japan, Thailand, and potentially other locations depending on regional assembly agreements (e.g., GM plants for North American models).

Platform Development:

The TF platform was developed by Isuzu and formed the basis for several GM global pickup truck platforms, highlighting its robust engineering.

🏆 Awards & Recognition

Industry Recognitions:

While specific awards for the 2004-2007 TF RA series might be regional or tied to its rebadged versions (like Chevrolet Colorado or Holden Rodeo), the platform consistently received accolades for its value, reliability, and utility in the compact pickup segment.