1997-2003 Infiniti QX4 Automatic Transmission Service Manual

Infiniti QX4 Automatic Transmission Coverage

• Covers 1997–2003 Infiniti QX4 vehicles equipped with the RE4R01A automatic transmission
• Official publication NBAT0027, issued by Infiniti
• Contains 47 pages of electrical schematics, diagnostic procedures, and system component data
• Downloads to your account within seconds of checkout
• OCR text layer lets you jump to a torque spec by keyword
• This 1997–2003 Infiniti QX4 factory transmission manual provides critical reference data for how factory workshop documentation is structured regarding automatic transmission systems.

Diagnostic and Control System Overview

The Infiniti QX4 automatic transmission manual details the function and operation of the Transmission Control Module (TCM), covering its interface with the engine control unit to monitor shift patterns, line pressure regulation, and lock-up solenoid states. It includes a complete breakdown of the shift mechanism, detailing clutch and brake component roles such as the forward, high, reverse, and overrun clutches, alongside one-way clutch dynamics. The document also maps out the entire hydraulic control circuit, providing diagnostic paths for shifting issues, torque converter clutch performance, and line pressure solenoid operations based on real-time voltage input signals.

Technical Reference and Diagnostic Data

Diagnostic procedures utilize both specialized scan tool interfaces and manual inspection methods for trouble code confirmation. The manual provides reference values for key electrical components, including sensor input ranges and solenoid operational voltages. A/T fluid temperature sensor resistance at 20°C is listed at 2.5 kΩ in the component inspection table. Line pressure solenoid valve operation corresponds to 1.5–3.0V during normal driving conditions. The trouble diagnosis workflow incorporates stall tests and line pressure checks to verify transmission integrity. 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 Infiniti QX4 manual for the 1997–2003 model years provides comprehensive diagnostic data, wiring diagrams, and component inspection procedures for the RE4R01A automatic transmission system, serving as a technical reference for authorized service personnel.

Document Reference: Publication number NBAT0027