1990 Nissan 300ZX Fairlady Z, 300ZX Turbo, 300ZX 2+2, and 300ZX 2+2 Turbo Service Manual (P/N RE4R01A)

• Covers the 1990 Nissan 300ZX and Fairlady Z equipped with the RE4R01A or RE4R03A automatic transmissions
• Official Nissan OEM publication (P/N RE4R01A) for specialized transmission service and overhaul, documenting internal hydraulic control systems and electrical diagnostics
• Contains 47 detailed exploded-view mechanical diagrams, 16 circuit schematic pages, and 24 diagnostic procedure flow charts
• Serves as the primary factory reference for the 1990 Z-car transmission control units and fluid pressure testing

Component and System Documentation

The complex hydraulic and electrical architecture of the Nissan 300ZX transmission requires accurate data for proper servicing. This factory manual outlines those exact systems. You will find detailed inspection parameters for the control valve assembly, oil strainers, and accumulators. It even provides precise bolt-length references essential for valve body reassembly. Working on high-pressure hydraulic circuits carries inherent risks, so technicians must follow the factory safety protocols outlined within the text before conducting pressure tests or disassembly. Extensive sections cover the electrical control unit. This includes pin-out layouts for the A/T control unit and direct diagnostic paths for solenoid circuitry—specifically shift solenoids A and B, line pressure solenoids, and lock-up functions.

Technical Specifications and Diagnostics

Proper diagnostics rely on factory-correct baseline numbers. The text details line pressure measurement ranges and stall testing procedures for both the RE4R01A and RE4R03A variants. Need to identify failure symptoms linked to clutch or brake band wear? The included flow charts map those out. Reference values for the RE4R01A transmission stall speeds sit between 2,450 and 2,650 rpm, with specific elevated specs provided for the RE4R03A. You also get critical diagnostic data for fluid temperature sensor thresholds, including exact resistance values at specific temperature points for accurate circuit testing. Originally published as Nissan Automatic Transmission Section AT (1990), this documentation provides the exact technical foundation needed to diagnose and maintain these drivetrains.