2003–2004 Infiniti M45 Factory Service Manual (OEM)

• Factory service manual set covering 2003–2004 Infiniti M45 (Y34) sedans in U.S. and Canadian left-hand-drive, rear-wheel-drive configurations.
• VK45DE V8 engine repair covers engine removal, timing-chain service, valve-clearance adjustment, cylinder-head rebuilding, and cylinder-block disassembly and assembly.
• RE5R05A five-speed automatic transmission coverage includes stall and line-pressure tests, road testing, internal overhaul, and control-valve/TCM replacement procedures.
• Chassis procedures cover R200 rear final drive overhaul, wheel-hub and axle service, suspension alignment, steering-gear repair, and VDC/TCS/ABS diagnosis.
• ASCD and Intelligent Cruise Control (ICC) sections provide actuator and pump testing, fault isolation, laser-beam aiming, and component replacement.
• Body and comfort-system coverage extends to structural panel replacement, automatic air-conditioning diagnosis, climate-controlled seats, navigation, and SRS collision diagnosis.

Year-Specific Publications

This PDF set contains 6,476 pages across 82 PDF files, including each year's front matter and alphabetical index. The 2003 manual has 3,222 pages, Publication No. SM3E-1Y34U3, August 2002 edition revised April 2004. The 2004 manual has 3,254 pages, Publication No. SM4E-1Y34U3, September 2003 edition revised October 2004.

Equipment-specific material separates ICC and non-ICC CAN configurations, navigation and non-navigation displays, and U.S. headlamps from Canadian daytime lighting.

Engine, Transmission, and Chassis Repair

Engine-control diagnostics cover fuel-pressure testing, EVAP faults, intake valve timing control, and electronic-throttle problems. Basic service procedures include Accelerator Pedal Released Position Learning, Throttle Valve Closed Position Learning, and Idle Air Volume Learning.

Cooling and lubrication chapters cover oil-pressure checks, oil-pump inspection, cooling-system leak testing, and cooling-fan pump and motor service. The exhaust section addresses the dual-mode muffler actuator and its cable.

Transmission repair includes clutch and brake inspection, oil-pump work, end-play adjustment, and the TCM EEPROM procedures tied to transmission or control-valve replacement. Differential service covers pinion height, tooth contact, backlash, and bearing preload. Hydraulic steering pressure tests and bleeding accompany steering-gear and pump rebuilding.

The engine precautions identify the valve and piston damage risk from rotating the crankshaft or camshafts with the timing chain disconnected.

Accelerator and Cruise Control Systems

Component breakdowns cover the accelerator wire, brackets, and pedal assembly. The Accelerator Control System (ACC) section documents removal, installation, cable adjustment, and final checks. ASCD testing addresses the actuator, vacuum pump, air valve, and release valve, along with switch inputs and the pump circuit.

ICC coverage distinguishes vehicle-to-vehicle distance control, fixed-speed cruise, and Brake Assist with Preview Function. Sensor aiming uses CONSULT-II and the KV99110100 (J-45718) ICC target board. The aiming procedure is required after sensor removal or installation and cannot be performed without CONSULT-II. Symptom charts address failed engagement, hunting, warning-chime faults, and poor vehicle detection.

Body, Climate, and Electrical Systems

Automatic air-conditioning procedures cover compressor and evaporator replacement, door-motor diagnosis, refrigerant leak detection, and performance testing. Body repair includes alignment dimensions, corrosion protection, and structural replacement instructions for members, pillars, sills, and rear panels.

Electrical coverage reaches IVIS/NATS immobilizer diagnosis, keyless-entry registration, the Automatic Drive Positioner, and window and memory-mirror diagnosis. The tire-pressure section provides transmitter ID registration procedures. CONSULT-II self-diagnosis, data monitoring, and active tests support fault tracing in the applicable systems.

Specification and Calibration Data

Maintenance chapters provide service schedules and fluid recommendations. Service Data and Specifications tables cover fluid capacities, wear limits, and adjustment tolerances. Component-specific torque specifications cover the accelerator pedal, cable brackets, and ASCD actuator in metric and U.S. units. Calibration coverage also includes steering-angle sensor neutral-position adjustment.

For electrical troubleshooting, the manuals list terminal reference values for the ICC control unit, ICC radar sensor, and warning chime circuits. Pinout tables and continuity requirements help verify signal integrity across the CAN communication line and ASCD pump circuits.

ASCD and ICC wiring diagrams accompany cruise diagnostics. CAN and POWER diagrams support network and supply tracing, while the VDC/TCS/ABS Hydraulic Circuit Diagram and Harness Layout show brake-circuit relationships and connector routing.

Brake, SRS, and ICC work requires the specified safety precautions and diagnostic equipment, particularly around hydraulic circuits, air bags, and the laser sensor.