Isuzu Trooper / Holden Jackaroo 1998–2005 Workshop Manual Collection (4JX1 P/N UB4JX-WE-9811)

The Holden note identifies these as right-hand-drive Trooper service and repair documents for use under the Jackaroo badge. It directs readers to interpret “Trooper” and “IGM” references as Jackaroo.

Choose procedures by technical build, engine, transmission, and control-system version rather than retail trim. The embedded 4JX1 engine publication specifies markets outside the USA and Canada.

PDF Search, Bookmarks and Wiring Detail

Text access and diagram detail: Much of the workshop text is searchable, but the MUA chapters and immobilizer supplement are not text-searchable. The main PDF has extensive bookmarks, although some entries have no working page destination; the one-page Holden note has no bookmarks. Small wiring labels require zooming, and some diagrams need rotation. Immobilizer wiring is less crisp than the main circuit drawings.

The RAR download contains 2 printable PDFs totaling 11,799 pages: the 11,798-page workshop compilation and the separate one-page Holden note. The total includes two shared title/index pages, 21 memo pages, and two 4JX1 publication pages.

Engine Overhaul, 4WD and Control-System Diagnosis

The following selected coverage highlights outline the principal workshop areas rather than reproduce the full contents. Additional topics include wiper/washer service and audio-system wiring.

• Engine repair: Diagnosis, removal and installation, timing-belt and timing-gear service, cylinder-head inspection, valve-clearance adjustment, camshaft and crankshaft work, and piston/connecting-rod repair.

• 4JX1 injection and lubrication: Oil-rail and injector service, high-pressure oil pump and pipework, turbocharger, intercooler, piston-cooling oil pipes, valve train, and electronic driveability diagnosis.

• Transmission and clutch: Automatic-transmission road, stall, line-pressure and hydraulic tests; electronic diagnosis, valve-body and clutch-unit service; manual-transmission disassembly, inspection, reassembly, and clutch repair.

• 4WD and chassis: Differential and limited-slip repair, manual-locking and SOTF hubs, propeller shafts, standard/TOD transfer cases, suspension, alignment, power steering, ABS, power-assisted brakes, and parking brakes.

• Electrical troubleshooting: System wiring, fuse and relay locations, grounds, harness routing, connector views, starting/charging diagnosis, QOS diesel controls, PCM circuits, and body electrical systems.

• HVAC, body and restraints: Heating, ventilation, manual/full-automatic A/C diagnosis, refrigerant testing, magnetic-clutch service, compressor overhaul, body structure, seats, locks, sunroof, trim, seat belts, and SRS.

• Service specifications: Maintenance schedules, torque tables, fluid and lubricant data, pressure tests, alignment settings, wear limits, electrical test values, adjustments, and special-tool listings.

This material is suited to technicians familiar with mechanical overhaul and circuit diagnosis; immobilizer programming requires Tech-II equipment, suitable software, and access to the vehicle’s security information.

Engine Builds and Driveline Variants

The 4JG2-NA/4JG2-TURBO has dedicated engine sections in the 1998/1999 and 2000 groups. The later engine index separates 8-bit gasoline, 32-bit gasoline, and 4JX1 material; the 32-bit mechanical volume identifies the 6VE1. Cooling, fuel, lubrication, induction, exhaust, and starting/charging work accompany the mechanical procedures.

Step-by-step instructions cover cylinder-head disassembly and inspection, timing-system installation, internal engine repair, and transmission overhaul. The 4JX1 material extends to the engine block and oil-operated injection system.

AW30-40LE material appears in the 2000 and later groups. The later transmission index separates 4L30-E control versions and an AW30-40LE Semi Type section. MUA chapters distinguish 4x2 and 4x4 assemblies, including their internal inspection and troubleshooting procedures.

Front differential coverage is accompanied by separate 220 mm and 244 mm rear-differential sections. Lever- and push-button-type Shift On The Fly controls, Torque On Demand diagnosis, front torsion-bar suspension, rear coil springs, steering-system testing and bleeding, and pump/gear repair are also included.

Circuit Diagnosis and Immobilizer Service

System-specific diagrams connect electrical diagnosis with component testing. Examples include full-automatic A/C circuit and block diagrams, SOTF vacuum piping diagrams, TOD diagnostic flowcharts, the seven-sheet 6VE1 PCM wiring set with 80-way connector tables, AW30-40LE control diagrams with a Tech-II start-up flowchart, and SRS wiring-location and connector-face views.

Together, wiring, connector assignments, and diagnostic charts let a technician relate a reported fault to the relevant circuit and component tests before selecting a repair.

The immobilizer supplement provides separate 6VD1/6VE1, 4JG2, and 4JX1 layouts. It covers controller terminals, Car Pass/security-code functions, transponder programming and erasure, ICU/ECM reset or programming, and no-start fault isolation.

Component Service, Tooling and Repair Cautions

Compressor overhaul sections cover DKV-14D, DKS-15CH, and HD6 units. Exploded assembly views and inspection charts accompany engine, transmission, transfer-case, differential, and steering repair.

Tool references include steering-wheel remover 5-8840-0016-0 (J-29752) and pinion-flange holder 5-8840-2157-0. These listings identify equipment required by the associated procedures.

The cooling section explains that the later 6VE1 fan/belt arrangement is not interchangeable with the earlier 6VD1 layout: incorrect fan installation can reverse cooling airflow. Differential procedures identify the collapsible pinion spacer as a replacement item, while steering-wheel instructions warn against impact loads along the energy-absorbing shaft.

The 4JX1 instructions warn that forcing the piston-cooling oil pipe can bend its jet and interrupt piston cooling, potentially causing seizure. Injector-oil-pipe procedures also address retained high-pressure oil.

Review the applicable SRS, vehicle-lifting, refrigerant, fuel-system, and 4JX1 high-pressure oil cautions before beginning repair work.

A Preview of Valve and Thermostat Inspection Data

For 4JX1 valve-clearance adjustment, the cold specifications are 0.15 ± 0.05 mm intake and 0.25 ± 0.05 mm exhaust, supported by shim-adjustment procedures and dedicated tooling.

The 6VD1/6VE1 thermostat inspection section specifies initial opening at 74.5–78.5°C and valve lift greater than 8.5 mm at 90°C.