1989–1994 Nissan Skyline GT-R R32 Service & Repair Manual

This Nissan service manual covers the 1989–1994 Skyline GT-R R32 (E-BNR32), with the RB26DETT twin-turbo engine and 4WD system. It includes maintenance, troubleshooting, component removal and installation, and internal repair procedures.

• Engine repair: Timing-belt replacement, cylinder-head and cylinder-block overhaul, valve-clearance adjustment, water-pump service, and lubrication-system inspection.

• Fuel and engine controls: ECCS diagnostics, fuel-pump and ignition-coil testing, AAC valve checks, and six in-line throttle-chamber linkage adjustment.

• Clutch and transmission: Clutch hydraulic service, FS5R30A removal and teardown, gear and synchronizer inspection, bearing selection, and reassembly.

• 4WD and final drives: E-TS electrical and hydraulic troubleshooting, transfer-unit overhaul, propeller-shaft service, and front and rear differential repair.

• Brakes and steering: ABS fault diagnosis, caliper service, suspension and wheel-bearing work, steering-gear overhaul, and Super HICAS testing and bleeding.

• Body and climate control: Door and glass adjustment, power-window and door-lock diagnosis, interior trim removal, and automatic air-conditioner sensor and actuator checks.

• Diagrams and service data: System-specific wiring diagrams, vacuum routing, diagnostic charts, structural parts diagrams, torque tables, and inspection limits.

Written primarily for service personnel, this manual uses workshop measuring equipment and Nissan CONSULT for many electronic checks.

RB26DETT Mechanical Repair and Turbocharger Inspection

Engine coverage extends through cylinder-head disassembly, multi-stage head-bolt tightening, camshaft inspection, and valve-shim selection. The cylinder-block overhaul section adds piston and crankshaft measurements, bearing-grade selection, and oil-clearance checks.

Timing-belt illustrations identify alignment marks and tensioning details. The camshaft assembly cautions address possible valve-to-piston interference if the shafts are rotated at the wrong stage.

The intake collector, throttle chambers, and intake manifold have separate removal and assembly coverage. Cooling-system procedures include radiator and thermostat testing, water-pump replacement, and coolant filling.

Front and rear turbocharger procedures cover removal, assembly components, shaft-play inspection, oil and coolant passages, and symptom-based diagnosis. The swing-valve controller test warns that excessive air pressure can damage its diaphragm.

Safety note: The RB26DETT exhaust valves contain metallic sodium, which can react violently with water if exposed. Hands-on maintenance should be performed by qualified personnel using the complete procedures and precautions.

ECCS Fault Tracing and CONSULT Functions

The Electronically Concentrated Engine Control System section pairs symptom charts for starting, idle, and running faults with sensor and actuator circuit checks. CONSULT coverage includes self-diagnosis, Data Monitor, Active Test, and Work Support.

Control-unit pin assignments, input/output reference signals, and harness-continuity checks help distinguish a wiring fault from a failed sensor or actuator before a component is replaced. The RB26DETT circuit diagram and engine vacuum diagram support that fault tracing.

AAC valve coverage includes removal, installation, and electrical inspection; the valve itself is not intended for disassembly.

Transmission, E-TS, and Chassis Service

The FS5R30A chapter documents internal geartrain work, synchronizer clearances, bearing shims, and shift-control assembly. Final-drive coverage distinguishes the F160 front differential from the R200 mechanical limited-slip rear differential, with backlash, preload, and tooth-contact checks.

E-TS coverage includes the circuit diagram, fault-code checks, hydraulic-pressure testing, transfer clutch inspection, and bleeding procedures. The hydraulic unit is replaced as an assembly when internally faulty or leaking; its internal components are not covered as a rebuild procedure.

The general-information section also describes 4WD brake-test preparation, including the front propeller-shaft removal method. ABS diagnosis and Super HICAS electrical and hydraulic checks have their own circuit diagrams and troubleshooting charts.

Super HICAS service includes power-cylinder and pump work. The solenoid and fail-safe valves are not intended for disassembly.

Body Electrical Systems and Australian Changes

Body sections address weatherstrips, sealing, window regulators, locks, instruments, and interior components. The automatic air-conditioner system diagram and self-diagnostic flowchart accompany sensor tests, door-actuator checks, blower diagnosis, and compressor-control checks.

Australian design-change pages document the transfer-case cooler, relay-box arrangement, lighting circuits, and instrument-warning changes.

A Preview of Engine and Turbocharger Specifications

These are selected figures from the manual's RB26DETT specifications and pressure checks.

The engine is listed with an 8.5:1 compression ratio. The lubrication inspection specifies approximately 294 kPa (43 psi) at 2,000 rpm with oil at 80°C (176°F).

During the turbocharger function test, measured intake-manifold pressure should not rise above approximately 78–88 kPa (11–13 psi).

PDF Bookmarks, Diagram Legibility, and Included Pages

Navigation and small-print detail: Embedded bookmarks provide access to sections and procedures; PDF text search is not available. Small wiring labels require magnification, and some annotations in the dense overall harness diagrams remain difficult to distinguish when enlarged.

Supplied as one printable, 804-page PDF: 797 pages of the main manual, including its front matter and wiring diagrams; six pages of Australian design changes; and one Japanese-language aftermarket torque-controller instruction sheet. All are included in the total.