1998 Nissan Pathfinder Automatic Transmission Service Manual

1998 Nissan Pathfinder Automatic Transmission Service Information

• Covers 1998 Nissan Pathfinder R50 series automatic transmission, including 2WD and 4WD configurations
• Official Nissan publication, section AT (Automatic Transmission), featuring detailed diagnostic and system data
• Contains 100 pages of system overviews, diagnostic flow charts, wiring diagrams, and technical specifications
• Delivered as a direct download the moment payment clears
• Indexed PDF search covers every chapter and appendix
• Detailed visual breakdown of the RE4R01A transmission internal components, planetary gear layouts, and hydraulic control circuits
• Provides precise test values for TCM terminals, inhibitor switches, and solenoid valve electrical performance
• This technical publication is the exact service reference documentation used by authorized dealerships for the 1998 Nissan Pathfinder R50 build cycle

Diagnostic and System Documentation

This 1998 Nissan Pathfinder service publication provides a comprehensive look at the RE4R01A transmission architecture. The document outlines the mechanical construction of the dual planetary gear system, torque converter operation, and hydraulic control logic. It details the interaction between internal clutches, brake bands, and shift solenoids, explaining how the transmission control module manages shifting performance and fluid pressures. The section on system overview provides cross-sectional views of the internal assembly, making it a critical asset for understanding the unit's mechanical function.

The document includes extensive self-diagnostic information regarding the OBD-II system integrated with the engine control module. It covers the full range of diagnostic trouble codes related to inhibitor switches, fluid temperature sensors, and vehicle speed sensors, along with the correct test procedures for using the CONSULT or generic scan tools. The what an OEM service publication covers includes standardized test routines like stall tests and line pressure checks, ensuring that technicians have accurate performance benchmarks for evaluating unit health.

Technical Reference and Specification Data

The manual provides essential reference values for verifying electrical integrity, including resistance readings for A/T fluid temperature sensors. The A/T fluid temperature sensor resistance is documented at 2.5 kΩ at 20°C and 0.3 kΩ at 80°C. Total ATF capacity for the 1998 Nissan Pathfinder is specified at 10.2 liters in the system documentation. Torque converter bolt torque is defined at 20 Nm for proper installation. The maximum permissible play in the planetary gear assembly is listed at 0.5 mm in the component specifications. Electrical diagnostics are supported by detailed pinout tables and wiring diagrams that provide voltage ranges for terminal checks, such as the 1.5V to 0.5V signal range for fluid temperature sensors. Note: All service data shown here is for reference only — qualified technicians and the original OEM documentation remain the authoritative source for any hands-on work. This official 100-page Nissan OEM service manual covers the 1998 Nissan Pathfinder R50 transmission, providing complete diagnostic, electrical, and hydraulic specifications for the RE4R01A unit.

Document Reference: Nissan Section AT, 1998