1986-1995 Nissan Pathfinder Automatic Transmission Service Manual

1986–1995 Nissan Pathfinder Automatic Transmission Documentation

• Covers 1986–1995 Nissan Pathfinder automatic transmission variants, specifically the RE4R01A and RL4R01A units found in Truck and Wagon models with 2WD or 4WD configurations.
• Official Nissan publication RE4R01A, documenting technical specifications and diagnostic routines.
• Contains over 100 pages of diagnostic flowcharts, wiring schematics, and cross-sectional component diagrams.
• Downloads to your account within seconds of checkout.
• Permanent availability in your purchase account — no re-buy required.
• OCR text layer lets you jump to a torque spec by keyword.
• Suitable for printing individual sections for shop-floor use.
• This service-focused publication serves as the technical reference for internal transmission components including gear sets, hydraulic circuits, and solenoid systems.

Component and Systems Walkthrough

The 1986–1995 Nissan Pathfinder automatic transmission service manual details the technical architecture of the RE4R01A and RL4R01A automatic transmissions. Coverage begins with a structural overview of the gear systems, featuring cross-sectional views of internal components such as planetary gears, one-way clutches, and accumulators. The document outlines the function and operation of clutch and brake members, presenting the shifting logic across various transmission positions and throttle openings. Further content details the electronic control system, including the A/T control unit functions, sensor inputs, and output signals for shifting and lock-up operations.

Diagnostic and Specification Data

This manual provides extensive technical data and troubleshooting procedures for the transmission control systems. Diagnostic procedures cover electrical pinout checks for the A/T control unit, resistance values for solenoids, and voltage checks for sensors like the vehicle speed sensor and throttle position sensor. The data includes specific stall speed ranges for different engine configurations and standard hydraulic pressure values for test ports. Solenoid resistance values are specified at 20–30 ohms for shift and overrun solenoids, while line pressure solenoids are documented at 2.5–5 ohms. Fluid temperature sensor resistance is listed at 2.5 kΩ at 20°C in the electrical inspection tables. Reference how factory workshop documentation is structured to streamline your diagnostic approach. This comprehensive service publication is the primary reference for maintaining the 1986–1995 Nissan Pathfinder automatic transmission, providing technicians and owners with the exact technical parameters required for successful transmission service and diagnostic verification.

Document Reference: Publication RE4R01A