1994 Jeep Cherokee XJ Wrangler YJ Service & Repair Manual (P/N 81-370-4146)

Built around Chrysler's 1994 Jeep service information, this two-PDF set covers the Cherokee XJ and Wrangler YJ at factory workshop depth, with a separate ATSG reference devoted to the Jeep AW-4 automatic transmission. The Chrysler material was prepared for professional automotive technicians engaged in daily repair work and assumes access to normal shop equipment, measuring tools, and established service practices.

• Document set: 1,818 PDF pages total - a 1,706-page main file combining the base Chrysler service-manual content identified as Publication No. 81-370-4146 with the late-build R-134a supplement, plus a 112-page scanned ATSG Jeep AW-4 booklet.
• Vehicle coverage: XJ Cherokee two- and four-door 2WD/4WD configurations and YJ Wrangler two-door 4WD models, with XJ right-hand-drive electrical coverage and named references for XJ Country and YJ Sahara, Sport, and SE versions.
• Engine and fuel-system repair: Separate 2.5L and 4.0L gasoline chapters move from compression and leakage diagnosis through cylinder-head, valvetrain, timing, lubrication, piston/rod, crankshaft, and block repair. Related MFI chapters include fuel-pressure and injector testing, PCM inputs/outputs, ignition, cooling, exhaust, and emissions service.
• Transmission and transfer-case work: Manual-transmission coverage includes AX 4/5 and AX 15, while the automatic sections address 30RH/32RH and AW-4 diagnosis, removal, overhaul, valve-body service, and adjustment. Command-Trac NP231 and Selec-Trac NP242 transfer cases receive teardown, reassembly, and linkage coverage; the ATSG booklet adds dedicated AW-4 pressure, stall, time-lag, and solenoid diagnostics.
• Front chassis and steering: XJ link/coil and YJ leaf-spring layouts, the XJ 2WD tube axle, and Model 30 front drive axle are treated separately. Alignment, hub/bearing, ball-stud, track-bar, steering-linkage, manual/power gear, and tilt/non-tilt column repair procedures are included.
• Brake and electrical diagnostics: Disc and drum brake service, standard and ABS bleeding, ECU/HCU and wheel-sensor work, and DRB II-based fault diagnosis sit alongside battery, starter, charging, ignition-off-draw, lighting, accessory, and on-board diagnostic tests.
• Body, HVAC, and wiring: XJ and YJ body sections address doors, glass, seats, liftgate/tailgate, tops, trim, bumpers, frame/unibody inspection, and refinishing. Heating and A/C work includes late-production R-134a procedures. Wiring sheets cover YJ, XJ, and XJ RHD circuits, factory options, connectors, splices, fuse charts, and relay banks.

Identification and 1994-Specific Detail

VIN decoding, vehicle code-plate and sales-code information, safety-certification data, and body designations help establish the correct configuration before parts are ordered. Engine, transmission, transfer-case, and axle identification locations are also documented. One useful 1994 distinction is the deletion of the fuel-pump ballast resistor and bypass relay from the control circuit. The R-134a supplement applies to 1994 vehicles built after December 1993 and provides the revised refrigerant-system diagnosis and testing material intended for use with the base manual.

Diagrams, Tools, and Specifications

Named visual references include the Model 30 Gear Tooth Contact Patterns chart, 2.5L/4.0L secondary-ignition wiring, 2.5L/4.0L vacuum-routing schematics, XJ/YJ/XJ-RHD splice-location views, the AW-4 Component Application Chart, and XJ/YJ A/C performance charts. Factory tool references include the DRB II scan tool, Model 30 Spreader W-129-B and Bearing Installer C-3716-A, plus AW-4 Tool Kit 6294 and Pressure Test Port Adapter 7554. Component-specific torque data, fluid capacities, pressure-test values, electrical specifications, wear limits, clearances, and adjustment tables are provided throughout.

Scope and Repair Notes

The main PDF jumps from Group 2 to Group 5: Group 3, "Rear Suspension and Axles," appears in the index, but its service pages are not present. The dedicated rear-suspension and rear-axle repair chapter therefore is not included. The owner's manual and separate service-training material for basic equipment operation and theory are also outside this set, as is wiring for add-on or non-factory equipment.

The Model 30 procedure warns that over-spreading the housing can distort it and that increasing total shim-pack thickness can create excessive bearing preload. The suspension sections also flag ride-height tightening for rubber-bushed parts; ignoring it can cause premature bushing failure. Follow the specified hoisting points and safety precautions when working with fuel pressure, brakes, heavy assemblies, and refrigerant.