Nissan 300ZX / Fairlady Z Z32 Service Manual, 1990

This 1990 Nissan 300ZX Z32 factory service manual covers the European VG30DETT twin-turbo and Australian VG30DE non-turbo 2+2 T-bar-roof configurations, with manual and automatic transmissions. Coverage is limited to these Europe/Australia applications; the Fairlady Z name does not indicate blanket Japanese-market coverage.

PDF Files, Navigation, and Diagram Detail

Text search and wiring detail: PDF text search and embedded bookmarks are unavailable in all 19 files. Small wiring labels generally require zooming, and some dense connector grids remain coarse when enlarged. The separate wiring.pdf contains cropped E.C.C.S. diagram panels.

The ZIP contains 17 service-section PDFs totaling 1,190 pages, plus Circuit.pdf with four circuit-diagram pages and wiring.pdf with three E.C.C.S. diagram pages. The 1,197-page total includes these seven supplementary diagram pages and 14 designated note pages. All 19 PDFs are printable.

Engine, Drivetrain, and Chassis Service

The following highlights are selected contents, not a complete table of contents. Further topics include regional maintenance schedules and body-alignment measurements.

• Engine mechanical repair: Step-by-step procedures for timing-belt replacement, throttle-chamber synchronization, cylinder-head and cylinder-block work, engine removal, turbocharger inspection, and intercooler removal.

• Fuel and engine controls: E.C.C.S. self-diagnosis, CONSULT monitoring and active tests, fuel-pressure checks, sensor and actuator circuit diagnosis, and emission-control inspections.

• Transmissions and final drive: RS5R30A manual-transmission overhaul, RE4R01A/RE4R03A automatic-transmission diagnosis and repair, clutch service, propeller-shaft work, and differential adjustment.

• Brakes and suspension: Hydraulic bleeding, master-cylinder and caliper service, ABS fault diagnosis, wheel-bearing replacement, alignment checks, and adjustable-shock-absorber troubleshooting.

• Steering and SUPER HICAS: PR26SE steering-gear repair, hydraulic-system testing, twin-orifice steering diagnosis, HICAS self-diagnosis, power-cylinder service, and system bleeding.

• Body and climate control: T-bar-roof adjustment, glass and weatherstrip service, power-window checks, manual and automatic air-conditioning diagnosis, and MJS170 compressor repair.

• Electrical troubleshooting: Starting and charging tests, starter and alternator repair, power-supply routing, lighting circuits, A.S.C.D. cruise-control diagnosis, and LHD/RHD harness layouts.

The diagnostic and overhaul sections are suited to technicians with electrical-testing experience and access to pressure gauges, presses, and the specified service tools.

Engine Repair and E.C.C.S. Diagnosis

Engine mechanical coverage extends from compression testing and oil-seal replacement to valve-guide and valve-seat inspection, bearing selection, and internal engine assembly. Timing-belt instructions include automatic-tensioner checks; the throttle-chamber section documents synchronization with a dial gauge.

Turbocharger coverage includes removal, shaft inspection, and wastegate checks. Lubrication and cooling sections provide oil-pressure testing, oil-pump inspection, cooling-system pressure tests, thermostat checks, and water-pump and radiator service.

E.C.C.S. diagnosis addresses hard starting, unstable idle, hesitation, stalling, lack of power, detonation, and backfiring. Component-level checks cover ignition, injection, air metering, temperature inputs, valve-timing control, radiator-fan control, and the twin-turbo wastegate-control circuits.

CONSULT functions include self-diagnostic results, data monitoring, active tests, and work support. These are accompanied by ECU terminal tables and direct circuit checks, allowing operating symptoms to be compared with electrical inputs and component-test results.

Automatic-Transmission Testing and Overhaul

Section AT separates the RE4R01A and RE4R03A wherever construction or service data changes. Dedicated drawings show their major-overhaul layouts, oil channels, needle bearings, thrust washers, snap rings, and forward-clutch drum differences.

Fault isolation: Fluid-condition checks, road and cruise tests, stall and line-pressure tests, shift schedules, and a probability-ranked symptom chart support 20 numbered diagnostic procedures. They address starting and range-selection faults, loss of creep, harsh engagement, missing shifts, failed lock-up, loss of engine braking, and overheating.

The charts distinguish on-vehicle checks from faults requiring transmission removal and internal inspection. CONSULT data-monitor procedures and a no-CONSULT check-lamp method are supported by the A/T control-unit connector view and terminal inspection table.

Electrical checks cover revolution and vehicle-speed sensors, throttle and fluid-temperature inputs, shift solenoids A and B, overrun-clutch, lock-up, and line-pressure solenoids. Inhibitor, overdrive, kickdown, and idle switches, plus the engine-rpm signal, receive dedicated circuit checks.

On-vehicle service: Procedures cover control-valve and accumulator access, oil-strainer inspection, solenoid and terminal-cord service, revolution-sensor and rear-oil-seal replacement, parking-component inspection, inhibitor-switch adjustment, and manual-control linkage adjustment. Transmission installation includes torque-converter seating checks.

Bench repair includes torque-converter one-way-clutch testing, oil-pump extraction, rear-extension service, and manual-shaft components. Internal chapters address the reverse, high, forward, and overrun clutches; low-and-reverse brake; forward and low one-way clutches; rear internal gear and forward clutch hub; band-servo piston; output shaft and planetary geartrain; and parking pawl.

Reassembly covers selective end play, clutch packs, brake-band adjustment, control-valve installation, inhibitor-switch setup, and final checks. Separate Service Data and Specifications tables provide return-spring dimensions, accumulator O-ring sizes, plate-stack data, wear limits, selective retaining plates, and component-specific torque specifications.

Valve-body precautions: The manual maps steel balls, valves, sleeves, springs, the pilot filter, orifice-check assembly, and different bolt lengths. It cautions against magnetic tools and identifies the risk of scratching precision valve surfaces with unprotected wire.

Oil-pump seal rings have different diameters; incorrect placement or excessive spreading can deform them and compromise sealing.

Line-pressure and stall testing place the drivetrain under load and expose hot, pressurized ATF. The vehicle must be secured and the factory test precautions followed before carrying out those procedures.

Manual Transmission, Clutch, and Differential Service

The RS5R30A section documents case, shaft, gear, synchronizer, and shift-control disassembly and assembly. Inspection data include gear end play, baulk-ring clearances, and selective snap rings; European transmission-oil-cooler equipment is also addressed.

Clutch coverage distinguishes the VG30DE hydraulic system from the VG30DETT arrangement with a clutch booster. Propeller-shaft and final-drive procedures include center-bearing service, R200V/R230V differential overhaul, pinion-height selection, bearing preload, backlash, tooth-contact checks, and oil-cooler diagnosis.

Steering, Brakes, Body, and Climate Control

SUPER HICAS coverage combines CONSULT and non-CONSULT diagnosis with hydraulic checks, power-cylinder repair, solenoid and fail-safe-valve checks, and steering-angle signal diagnosis. Suspension chapters add hub and drive-shaft service, multi-link inspection, and adjustable-damper control checks.

Brake procedures cover disc-caliper repair, parking-drum service, and ABS warning-light, wheel-speed-sensor, actuator, and relay diagnosis. Body sections address roof locks and seals, door and glass adjustment, interior trim, and electrical checks for powered body equipment.

Air-conditioning coverage distinguishes manual controls from automatic temperature control. It includes performance-test interpretation, door-motor and sensor diagnosis, refrigerant-system service, and MJS170 compressor component repair.

Factory Drawings and Service Tools

Illustrations include Hydraulic Control Circuits, the Electrical Control Chart, a transmission Cross-Sectional View, the Circuit Diagram for Quick Pinpoint Check, and separate RE4R01A/RE4R03A oil-channel drawings. System-specific wiring diagrams and connector views accompany the relevant diagnostic sections.

The AT tool tables identify the ST2505S001 pressure-gauge set and KV31101201 adapter, ST07870000 transmission case stand, KV31102100 torque-converter check tool, ST25850000 sliding hammer, KV31102400 clutch spring compressor, and ST33200000/ST30720000 seal-installation drifts.

The separately supplied GI, EL, EF & EC, MA, and PD sections provide the diagnostic conventions, power-supply information, engine-control checks, fluid-service procedures, and propeller-shaft instructions referenced by the transmission procedures.

A Preview of Synchronization and End-Play Data

The throttle-chamber synchronization procedure specifies a dial-gauge indication of 0.07–0.13 mm during adjustment.

For RE4R01A and RE4R03A assembly, the specified total end play is 0.25–0.55 mm. Reverse-clutch drum end play is listed separately at 0.55–0.90 mm, with selective bearing-race and thrust-washer tables supporting the respective adjustments.