1999–2001 Isuzu Holden Opel Frontera Factory Workshop Manual (PN RV99_02–01.E)

• Coverage and document identity: Covers the 1999-2001 Isuzu Frontera (UE) under Isuzu Publication No. RV99_02-01.E. The 7,070-page PDF contains two front-matter pages, followed by 2,415 pages for 1999, 2,437 pages for 2000, and 2,216 pages for 2001.
• Engine repair: Separates the X22SE 2.2L and 6VD1 3.2L material for 1999-2000; the 2001 engine chapters cover only the 6VD1. No diesel engine repair chapter is included. Procedures cover engine removal, timing-belt service, cylinder-head and valve-train work, 6VD1 valve-clearance shim selection, X22SE balance-unit adjustment, and bottom-end inspection.
• Transmission and driveline: Details 4L30-E road testing, stall and line-pressure tests, internal clutch and valve-body repair, and transmission removal. The MUA 5C 4x4 chapters cover case and geartrain disassembly, synchronizer inspection, reassembly, transfer components, and clutch hydraulics.
• Axles, steering, suspension, and brakes: Includes differential overhaul and gear setup, hub and drive-shaft work, power-steering pressure testing and bleeding, suspension inspection, ABS/EHCU diagnosis, hydraulic brake bleeding, and the Tech 2 service-bleed routine.
• Model-year-specific 4WD and chassis electronics: Adds 2001 Intelligent Suspension Control flashing-code diagnosis and G-sensor/actuator testing. Dedicated Torque-on-Demand (TOD) control and transfer-case sections provide DTC charts and pin assignments, followed by clutch-pack, chain, and shift-motor service.
• Electrical, HVAC, body, and restraints: Supplies circuit diagnosis, connector and harness references, manual and automatic A/C troubleshooting, refrigerant recovery and leak checking, frame and body service, lighting and locks, and SRS fault isolation.

This factory workshop manual is suited to technicians and experienced owners already comfortable with safe vehicle support, component-level disassembly, and electrical testing; several electronic diagnostic routines also assume access to an Isuzu Tech 2 or equivalent scan tool.

Model-Year and Configuration Coverage

The 1999 and 2000 editions carry parallel engine families, while the 2001 edition concentrates on the 6VD1 and introduces Intelligent Suspension and TOD systems. The 1999-2000 general-information chapters show separate 2-door and 4-door lifting-point layouts. Body and wiring sections also identify short-wheelbase (SWB) and long-wheelbase (LWB) assemblies and locations. VIN, engine serial number, and transmission identification references help match the vehicle before parts or repair procedures are selected.

Mechanical Repair Depth

The engine chapters document removal, disassembly, inspection, repair, and reassembly of cylinder heads, valves and guides, camshafts, crankshafts, pistons and connecting rods, and cylinder blocks. Supporting sections handle cooling, fuel delivery, ignition, starting and charging, lubrication, induction, exhaust, and driveability/OBD diagnosis.

The 4L30-E material begins with complaint analysis, road tests, fluid checks, shift and lockup charts, stall testing, and hydraulic pressure diagnosis. It then moves into the oil pump, main and adapter valve bodies, clutch packs, sprag units, accumulator, converter housing, and internal reassembly. MUA 5C coverage includes the intermediate plate, detents and shift arms, reverse and fifth gear, main and countershafts, synchronizers, and final adjustment. Front and rear differential chapters add pinion-depth selection, bearing preload, backlash, tooth-contact checks, and limited-slip clutch-pack service.

Electrical Diagrams and Fault Diagnosis

The Wiring System chapters provide fuse and relay locations, grounding points, harness routing, circuit diagrams, component locations, connector faces, and symptom diagnosis. Named examples include the X22SE ECM Wiring Diagram, 6VD1 PCM Wiring Diagram, 4L30-E Electronic Control Diagram, TOD Circuit Diagram, Intelligent Suspension Circuit Diagram, and SRS System Schematic. DTC charts, OBD test logic, flashing-code procedures, scan-tool data, control-unit pin assignments, and electrical test specifications support fault isolation across engine, transmission, chassis, body, and restraint systems.

HVAC, Body, and Workshop References

HVAC coverage includes heater and ventilation diagnosis, manual and automatic air-conditioning controls, self-diagnosis, sensor and actuator checks, compressor and magnetic-clutch repair, evaporator and expansion-valve service, refrigerant-line work, and HFC-134a recovery, evacuation, charging, and leak testing. Body chapters address frame dimensions, bumpers, instrument panel removal, seats, power windows, locks and keyless entry, sunroof/convertible-top parts, trim, and cruise control.

Reference material includes normal- and severe-use maintenance schedules, approved fluids, capacities, component torque tables, wear limits, clearances, shim data, and special-tool callouts. Examples include power-steering tester 5-8840-0135-0 (J-29877-A), refrigerant station J-39500, and high-impedance multimeter J-39200. The engine sections warn that supporting the engine under the oil pan can damage the oil pickup. Differential repair notes also caution that prying the ring gear can damage both the gear and case, while excessive pinion preload requires another new collapsible spacer.

A/C refrigerant work, brake and steering hydraulics, SRS diagnosis, vehicle lifting, and engine or transmission removal require the manual's specified safety procedures and appropriate shop equipment.