Holden Jackaroo and Isuzu Trooper Workshop Manual for SUV models 1998–2005

This 11,798-page PDF presents export-market, right-hand-drive Isuzu Trooper UBS workshop material under the Jackaroo badge. A General Motors header instructs that source references to “Trooper” or “IGM” be read as Jackaroo.

Coverage is indexed by technical build rather than retail trim name. The main divisions are 1998/1999 UBS, 2000 UBS, and 2002/2005 UBS, followed by the applicable engine, transmission, driveline, electrical, and chassis sections. The later gasoline material is further divided into 8-bit and 32-bit engine-control systems.

Core Shop Coverage

• Engine diagnosis and internal repair: Covers the 3.2L 6VD1 and 3.5L 6VE1 gasoline V6 engines, the 3.1L 4JG2-NA/4JG2-TURBO, and the 3.0L 4JX1 diesel. Procedures include engine diagnosis, removal and installation, timing-belt or timing-gear service, cylinder-head disassembly and inspection, valve-clearance adjustment, camshaft and crankshaft work, piston and connecting-rod repair, lubrication, cooling, induction, exhaust, fuel-system service, and starting/charging diagnosis.
• 4JX1 oil-rail injection coverage: Provides dedicated sections for the turbocharger, intercooler, oil rail and injectors, high-pressure oil pump and pipework, piston-cooling oil pipes, timing gear, valve train, engine block, and electronic driveability diagnosis. The embedded 4JX1 engine volume is identified as Isuzu publication UB4JX-WE-9811 for markets outside the USA and Canada.
• Transmission and driveline repair: Includes 4L30-E and AW30-40LE automatic-transmission diagnosis, road, stall, line-pressure, and hydraulic testing, electronic control diagnosis, removal and installation, valve-body and clutch-unit service, and internal overhaul. Manual-transmission coverage includes AR-5, MUA, and clutch service, with separate standard and TOD transfer-case sections.
• Axles, 4WD, steering, suspension, and brakes: Covers the front and both rear differential variants; axle and pinion service; limited-slip components; manual-locking and SOTF hubs; propeller shafts; Shift On The Fly vacuum controls; Torque On Demand diagnostics; front torsion-bar and rear coil-spring suspension; wheel alignment; power-steering testing, bleeding, pump and gear repair; ABS, power-assisted brakes, and parking brakes.
• Electrical diagnosis and immobilizer work: Section 8D supplies system wiring, fuse and relay locations, ground points, harness routing, connector views, and component locations for starting/charging, lighting, QOS diesel controls, PCM circuits, cruise control, power locks/windows, and other body systems. The 2000 group adds a dedicated immobilizer supplement with 6VD1/6VE1, 4JG2, and 4JX1 layouts, controller terminal assignments, Car Pass/security-code functions, Tech-II transponder programming and erasure, ICU/ECM reset or programming, and no-start fault isolation.
• HVAC, body, and restraints: Includes heating and ventilation, manual and full-automatic A/C diagnosis, refrigerant-system testing, magnetic-clutch service, and compressor overhaul for DKV-14D, DKS-15CH, and HD6 units. Body structure, seats, locks, sunroof systems, trim, seat belts, SRS, and restraint-control sections are also included.
• Specifications and service tooling: Supplies component-specific torque tables, fluid and lubricant data, maintenance schedules, alignment specifications, pressure-test data, wear and inspection limits, electrical test values, adjustment information, and special-tool listings. Examples include Tech-II diagnostic support, steering-wheel remover 5-8840-0016-0 (J-29752), and pinion-flange holder 5-8840-2157-0.

Technical Coverage

How the Manual Supports Diagnosis

The diagnostic package combines system-specific wiring, control, connector, and flowchart material rather than relying on a single generic diagram set. Representative graphics include the full-automatic A/C circuit and block diagrams, lever- and push-button-type SOTF vacuum piping diagrams, the TOD basic diagnostic flowchart and circuit diagram, a seven-sheet 6VE1 PCM wiring set with 80-way connector pinout, the AW30-40LE control-system and wiring diagrams with Tech-II start-up flowchart, and SRS component/wiring-location and connector-face views. Exploded assembly views and inspection charts support transmission, transfer-case, differential, steering, and engine repair sections.

Manual-Specific Repair Cautions

Several cautions identify specific ways components can be damaged. The 6VE1 cooling section warns that the 1998-on fan/belt arrangement is not interchangeable with the earlier 6VD1 layout; incorrect fan installation can reverse airflow, reduce A/C performance, and raise coolant temperature. Differential overhaul treats the collapsible pinion spacer as a single-use part, while steering-wheel service prohibits hammering along the energy-absorbing shaft. On the 4JX1, residual injector-actuation oil pressure can remain during pipe removal, and forcing the piston-cooling oil pipe can bend the jet, interrupt piston cooling, and lead to seizure.

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