Hyundai Sonata NF 2005–2013 Repair Manual – G4KC 2.4L

This Hyundai Sonata NF repair manual covers the G4KC-GSL 2.4 engine with the M5GF2 manual or F4A42 automatic transaxle. The foreword identifies the publication as Shop Manual Volume 1 of 2, dated September 2004; confirm fitment by engine and transaxle codes.

The separate Electrical Troubleshooting Manual, Pub. No. A3KE-EG40A, is not included.

PDF Search, Bookmarks, and Page Condition

Navigation and diagram detail: PDF text search is unavailable in all 18 files. Chapter bookmarks are present, but some destinations and cross-file links are faulty. Small wiring labels require zooming. In the HVAC file, PDF pp. 86–87 and 108–110 have damaged, largely unreadable page images affecting humidity-sensor and intake-potentiometer diagnosis.

The ZIP contains 18 printable PDF chapter files totaling 1,908 pages, including the 426-page Fuel System file, the 2-page foreword/safety notice, the 12-page index, and nine additional blank pages. Of that total, 62 pages repeat Suspension and Emissions chapters, leaving 1,846 pages without that chapter overlap.

Engine Teardown, Transaxle Service, and Electrical Diagnosis

The selected topics below show the main repair areas; further subjects include tire-pull diagnosis and sunroof initialization.

• Engine repair: Step-by-step cylinder-head and block work, timing and balance-shaft chain service, compression and valve-clearance checks, cooling-system bleeding, lubrication, and intake/exhaust service.

• Drivetrain: Clutch service and M5GF2 shaft, gear, differential, and shift-fork work; F4A42 electronic diagnosis, road and hydraulic testing, service adjustments, shift-control service, and unit removal/installation.

• Suspension and steering: Driveshafts, hubs, wheel bearings, struts, control arms, links, and wheel alignment, with hydraulic steering repair and electronically controlled assist diagnosis.

• Brakes and stability control: Front and rear brake service, parking-brake adjustment, ABS/EBD/ESP fault diagnosis, scan-tool bleeding, steering-angle calibration, and ESP variant coding.

• Engine and body electrical: ECM troubleshooting, starting/charging tests, cruise-control circuits, ETACS diagnosis, immobilizer key teaching, and keyless-entry transmitter registration.

• SRS and HVAC: Airbag and pretensioner diagnostics and disposal, manual and fully automatic climate-control service, actuator/sensor checks, self-diagnosis, and system-specific circuit diagrams.

Hyundai intended this manual for dealership service technicians; the diagnostic sections call for Hi-Scan equipment and workshop test tools.

G4KC Internal Engine Repair

Cylinder-head and block procedures cover disassembly, inspection, reassembly, and installation. Limits address sealing-surface flatness, bores, pistons and rings, crankshaft and connecting-rod bearings, camshafts, valve guides, and valve seats.

Timing and balance-shaft chain layouts show crankshaft, camshaft, and balance-shaft indexing. The manual identifies non-reusable parts and sealing surfaces vulnerable during teardown. Component-specific torque tables, approved lubricants and sealants, sealant locations, and fastener-angle procedures support final assembly.

Listed tools include the 09231-3K000 flywheel stopper, 09221-4A000 torque-angle adapter, 09222-3K000/09222-3K100 valve-spring set, and dedicated crankshaft seal installers.

M5GF2 and F4A42 Service Limits

M5GF2 coverage extends to the reverse idler gear, case, clutch housing, bearing preload, and end-play checks. Input-shaft disassembly is reference material; Hyundai recommends replacing a faulty input-shaft assembly. The clutch chapter details the cover and disc, master cylinder, pedal, inspection, replacement, and adjustment.

F4A42 coverage adds torque-converter stall testing, oil-pressure checks, sensor/solenoid fault isolation, and power-train and hydraulic-control views. It is not arranged as a full internal bench-overhaul manual.

Suspension, Hydraulic Steering, and Brake Controls

Component procedures include stabilizer bars, assist and trailing links, knuckles, and rear axle assemblies. Steering coverage distinguishes hydraulic gear, pump, and hose repair from EPS control-module and bypass-solenoid diagnosis, with pin layouts and circuit diagrams. The EPS system varies hydraulic assistance with vehicle speed.

Brake sections address the booster, pedal, master cylinder, lines, front discs, and rear disc and rear drum configurations. ABS/ESP circuit layouts, connector data, wheel-speed and motion-sensor diagnosis, Hi-Scan checks, and fault charts support system testing.

The driveshaft instructions warn that excessive pulling force can displace joint components, tear the boot, or damage the bearing. They also caution against placing vehicle weight on the wheel bearing while the driveshaft retaining hardware is loose.

ECM and Fuel-System Diagnosis

ECM connector and terminal functions, input/output signal data, freeze-frame guidance, and intermittent-fault checks support code-specific troubleshooting for the electronic throttle, CVVT, camshaft and crankshaft sensors, airflow and oxygen sensors, injectors, and fuel-pump controls.

The circuit and signal references let technicians check wiring and sensor operation before considering ECM replacement. Replacement procedures also include Hi-Scan Pro TPS adaptation after ECM or electronic throttle-body replacement.

Fuel-pressure testing and injector, pump, filter, delivery-pipe, and tank service are included, along with PCV, canister, purge-solenoid, and evaporative-emissions information.

Starting, Charging, and Body Systems

Engine Electrical adds spark testing, Micro 570 battery/starting/charging analysis, and alternator and starter repair.

Body Electrical covers ETACS and cluster diagnosis, transmitter registration, immobilizer key teaching, and limp-home functions. Separate procedures address power windows and mirrors, lighting and DRL, headlamp leveling, wipers, defoggers, seats, sunroof, audio, and the back-warning system.

The body chapter adds hood, trunk, door and glass, crash-pad, trim, bumper, sunroof, and seat replacement or adjustment procedures.

SRS and Climate-Control Service

SRS material covers the SRSCM, front, side, and curtain airbags, clock spring, impact sensors, pretensioners, Hi-Scan diagnosis, connector views, diagnostic-flow charts, and deployment/disposal tooling. It specifies battery isolation before SRS work and warns against checking inflator-circuit resistance with ordinary test equipment.

HVAC coverage includes R-134a recovery, evacuation, charging, leak testing, compressor-oil management, and refrigerant service data. Manual and automatic control circuits, actuator and sensor checks, self-diagnosis charts, and DTC procedures accompany the service instructions. The A/C section stresses proper refrigerant recovery and moisture control.

Compression-Test Reference Examples

For the G4KC engine at normal operating temperature, with the throttle fully open and cranking speed of at least 200 rpm, the compression section lists 1,283 kPa reference pressure and a 1,135 kPa minimum. The specified difference between cylinders is 100 kPa or less.

The accompanying diagnostic notes distinguish ring/cylinder-bore wear from valve-sealing or head-gasket faults through the response to an oil-assisted compression recheck.