JX6G-9F593-AA
BOSCH JX6G-9F593-AA Injecteur Haute Pression Ford Focus Mk4 Fiesta ST 1.5T Dragon
JX6Z-9F593-A, 0261500824, 0261500595High-Pressure Multi-Hole Direct Solenoid Valve-250 barSpécifications techniques
| Spécification | Valeur |
|---|---|
| Type de système | Bosch HDEV5 250-bar High-Pressure Gasoline Direct Injector |
| Pression de serviceSpéc. clé | |
| Combustion Architecture | Optimized for 3-cylinder asymmetric firing order with selective cylinder deactivation |
| Fuel Rail Bolt Torque | 11 N·m (retaining clamp screws) |
| High Pressure Line Torque | 26 N·m (fuel delivery pipe flare connection) |
| Solenoid Coil Resistance | 1.6 - 2.0 Ω at 20°C (rapid pulse inductive circuit) |
| Codes défauts fréquents | P0300 (Random Misfire), P0301-P0303 (Cylinder Misfire), P0171 (Fuel Trim System Lean) |
| Workshop Precaution | Do not reuse Teflon tip seals; ensure cylinder deactivation solenoid connectors are secured during harness routing |
Pompe haute pression associée (Ensemble circuit de carburant)
Fonctionne sur le même circuit haute pression Common Rail. En cas de chute de pression (P0087), vérifier le débit de la pompe avant de remplacer les injecteurs.
Conseils de montage
- [
- {
- "step": 1,
- "title": "Relieve Fuel Pressure & Disconnect 12V Battery Ground",
- "instruction": "Depressurize fuel rail via scan tool command or fuel pump inertia switch cutout. Disconnect battery negative ground post before servicing."
- },
- {
- "step": 2,
- "title": "Remove Air Ducting, Harness Plugs & Fuel Rail Fasteners",
- "instruction": "Disconnect charge air hoses over cylinder head. Unclip electrical harness connections from direct injectors. Loosen fuel rail retaining fasteners (11 N·m)."
- },
- {
- "step": 3,
- "title": "Withdraw Direct Injectors & Fit Fresh Teflon Tip Seals",
- "instruction": "Extract direct injectors using slide puller adapter. Inspect nozzle tip micro-orifices. Install fresh Teflon combustion seal ring and reshape using resizing tool."
- },
- {
- "step": 4,
- "title": "Torque Fuel Rail Bolts & High Pressure Fuel Unions",
- "instruction": "Position injectors into cylinder head ports. Tighten rail hold-down bolts to 11 N·m. Torque high pressure fuel pipe nut to 26 N·m. Start engine and verify zero leakage."
- }
- ]
Codes de Defaut (DTC) & Protocoles de Diagnostic
Codes de defaut diagnostiques (DTC) courants déclenchés lorsque cet injecteur common rail subit une usure, des pannes de circuit ou une dérive d'étalonnage:
Fuel Rail / System Pressure Too Low
Excessive internal backleak from worn control valve seats drops common rail pressure below target under engine load.
Injector Circuit Malfunction / Open Circuit
Solenoid coil resistance drift (0.2-0.5 Ω) or piezo stack degradation triggers driver stage shutdown on affected cylinders.
Cylinder Misfire & Balancing Deviation
Carbon-clogged nozzle spray holes or missing IMA calibration causes uneven cylinder contribution. Recode ECM and verify washer seating.
Fuel Rail / System Pressure Too High
Spill line backpressure or stuck metering valve prevents rail depressurization, creating overpressure risks under load.
Protocoles Techniques de Diagnostic & Réparation
Procédures d'atelier vérifiées, seuils de test et guides d'intervention pour cet ensemble.