2006 Nissan Pathfinder Service Manual (P/N SM6E-1R51U1)

• Official 3,658-page Nissan factory service manual set for the 2006 Pathfinder R51 series, supplied as 45 English-language PDF files. Document identity: Publication No. SM6E-1R51U1, Edition September 2005, Revision February 2007.
• Vehicle coverage is defined by Nissan’s model table: part-time 4WD Pathfinder wagons for the GCC (Gulf Cooperative Council) market, with the VQ40DE engine and RE5R05A 5-speed automatic transmission. Listed XE, SE, and LE model codes are JCKZLRN-EKA, JCKZLTN-EKA, and JCKZLVN-EKA.
• Covers VQ40DE engine repair from intake, fuel, cooling, lubrication, and electronic throttle diagnosis through timing-chain service, camshaft and cylinder-head work, engine removal, and cylinder-block disassembly and assembly.
• Details RE5R05A transmission diagnosis and repair, including OBD-II/CONSULT-II testing, indexed A/T DTC coverage, stall and line-pressure tests, fluid-cooler cleaning, control valve/TCM service, separate 2WD and 4WD removal procedures, and internal overhaul.
• Includes separate ATX14B all-mode 4WD and TX15B 4WD transfer chapters, with system diagnosis, power-transfer operation, control-unit testing, seal and control-device service, transfer removal, and disassembly/assembly procedures.
• Extends beyond the drivetrain with VDC/TCS/ABS and HDC/HSA brake control, suspension and steering, SRS and seat-belt systems, body repair, automatic and manual A/C with rear-A/C components, adjustable and non-adjustable pedal configurations, CAN networking, BCM/IPDM circuits, lighting, instrumentation, audio/navigation, and power-distribution diagnosis.

Document Scope and Section Breakdown

This is the full factory service manual set, not a short accelerator-pedal and transmission excerpt. The page breakdown is: Quick Reference/Foreword, 8 pages; General Information, 56; Engine, 894; Automatic Transmission, 326; Driveline/Axle, 424; Suspension, 44; Brakes, 222; Steering, 28; Restraints, 78; Body, 470; Air Conditioner, 288; Electrical, 778; Maintenance, 34; and Alphabetical Index, 8.

The model-identification chapter matters when matching this publication to a vehicle. It lists GCC 4WD models rather than blanket worldwide R51 coverage. Some shared chapters retain Nissan’s separate 2WD and 4WD component or removal paths, especially in the automatic-transmission section, but buyers should match the engine, transmission, destination, and model codes above before purchase.

Diagnostic and Repair Content

Engine coverage includes the VQ40DE system diagram, ECM connector terminal layout, CONSULT-II and generic scan-tool functions, fail-safe charts, freeze-frame and DTC logic, VIN registration, accelerator-pedal released-position learning, throttle-valve closed-position learning, and idle-air-volume learning. Mechanical chapters cover valve-clearance inspection and adjustment, timing-chain service, camshafts, cylinder heads, oil seals, compression testing, and piston, crankshaft, connecting-rod, and bearing inspection data.

The RE5R05A chapter follows the transmission from electronic fault isolation through bench repair, with 29 indexed DTC entries. It documents TCM inputs and outputs, shift and lock-up control, clutch and brake solenoid logic, symptom-based testing, the A/T cross-sectional view, oil-channel and selective-part locations, oil pump and clutch-pack repair, total end-play adjustment, and service specifications. Transfer coverage adds ATX14B and TX15B system diagrams, 4WD warning-lamp diagnosis, actuator and switch testing, and transfer-control position checks.

Chassis and body sections cover brake hydraulic service, steering-angle neutral adjustment, deceleration G-sensor calibration, wheel sensors, ABS/VDC actuators, suspension, final drives, axles, propeller shafts, power steering, doors and locks, remote keyless entry, NVIS/NATS diagnosis, glass, roof, seats, and body alignment, sealing, and repair dimensions. SRS material includes system configuration, wiring, CONSULT-II and flash-code diagnosis, air bag and pretensioner removal, and frontal, side, and rollover collision inspection.

The ACC and AP sections distinguish adjustable and non-adjustable accelerator pedal assemblies, manual-operation and Automatic Drive Positioner systems, control-unit power and park-position inputs, motor and switch circuits, connector locations, removal/installation, and electrical reference values. HVAC coverage includes R-134a equipment, refrigerant recovery and charging, leak detection, gauge diagnosis, compressor and clutch work, evaporators, heater cores, blowers, and air-door controls.

Diagrams, Tools, Specifications, and Service Cautions

Useful factory illustrations include the RE5R05A cross-sectional view and AT schematic, ATX14B/TX15B power-transfer diagrams, VDC/TCS/ABS hydraulic circuit diagrams, CAN Type 1-10 schematics and check sheets, SRS configuration and wiring diagrams, and power-supply, ground-distribution, connector, and harness-layout views. Nissan/Kent-Moore tool references include KV10112100 (BT-8653-A) for engine angle tightening, KV31103600 (J-45674) for transmission line-pressure testing, and J-42057-UPD for air bag lock service.

Specification sections provide torque tables, fluid and lubricant data, pressure-test specifications, alignment values, electrical terminal reference values, refrigerant data, wear limits, clearances, and inspection standards. The ACC chapter flags a common repair trap: adjustable pedals must be placed at the frontmost base position before removal/installation, and the accelerator-pedal position sensor or adjusting mechanism must not be separated from the assembly. In the SRS section, incorrect spiral-cable indexing or air bag diagnosis sensor unit orientation can damage components or compromise system operation.

Procedures involve SRS circuits, pressurized fuel circuits, brake hydraulics, refrigerant, hot fluids, and heavy drivetrain assemblies. Review the GI and system-specific precautions before electrical testing, refrigerant work, or major component removal.