HITACHI
16625AA040
Voir les spéc.
SolenoidSubaru Direct Injection Turbo (DIT) 200-bar Fuel SystemEuro 3306
HITACHI 16625AA040 Pompe Haute Pression Subaru WRX Forester XT Ascent 2.0T 2.4T
RÉFÉRENCE OE
16625AA000, HUP0044SOUPAPE DE COMMANDE
Integrated High-Speed Flow Control Spill ValveNEZ D'INJECTEUR
-PRESSION DE SERVICE
200 barNORME ANTIPOLLUTIONTier 3 Bin 30 / Euro 6d / LEV III
GARANTIE12 Mois
02
Compatibilité véhicules et motorisations
| Véhicule | Moteur | Années |
|---|---|---|
| Subaru WRX VA | Subaru / Toyota 2.0L & 2.4L Boxer DIT / D-4S (FA20D / FA20F / FA24D / FA24F) | 2015-2021 |
| Subaru Forester XT SJ | Subaru / Toyota 2.0L & 2.4L Boxer DIT / D-4S (FA20D / FA20F / FA24D / FA24F) | 2014-2018 |
| Subaru Ascent WN | Subaru / Toyota 2.0L & 2.4L Boxer DIT / D-4S (FA20D / FA20F / FA24D / FA24F) | 2019-2024 |
03
Spécifications techniques
| Spécification | Valeur |
|---|---|
| Type de système | Hitachi Cam-Driven Single-Plunger Mechanical High-Pressure Fuel Pump |
| Pression de serviceSpéc. clé | |
| Drive Configuration | Horizontal-opposed boxer exhaust camshaft drive lobe with roller tappet |
| Flange Mounting Bolt Torque | 12 N·m (flanged retaining screws torqued alternately) |
| High Pressure Line Torque | 27 N·m (rigid flared delivery pipe fitting) |
| Flow Regulator Valve Resistance | 8.8 - 10.8 Ω at 20°C (proportional metering solenoid) |
| Codes défauts fréquents | P0087 (Fuel Rail Pressure Low), P0088 (Rail Pressure High), P0090 (Fuel Pressure Regulator Control) |
| Workshop Precaution | Lubricate internal drive plunger and roller bucket contact surface with clean motor oil |
04
Conseils de montage
- [
- {
- "step": 1,
- "title": "Relieve Direct Injection Pressure & Disconnect Battery",
- "instruction": "Depressurize fuel line via scan tool command or fuel pump relay removal. Disconnect negative battery ground."
- },
- {
- "step": 2,
- "title": "Remove Intercooler Piping & Foam Sound Damper",
- "instruction": "Remove upper charge air piping on passenger side of engine bay. Unclip protective foam sound insulation around HPFP."
- },
- {
- "step": 3,
- "title": "Disconnect Fuel Unions & Mounting Flange Fasteners",
- "instruction": "Unplug electrical harness from flow control solenoid. Disconnect high-pressure pipe (27 N·m). Back out two flange bolts evenly to release spring tension."
- },
- {
- "step": 4,
- "title": "Reinstall Replacement Pump, Torque Bolts & Test Pressure",
- "instruction": "Fit new lubricated O-ring seal. Torque mounting flange bolts alternately to 12 N·m. Tighten delivery line to 27 N·m. Crank engine and verify fuel rail pressure."
- }
- ]
05
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:
P0087Critical
Fuel Rail / System Pressure Too Low
Excessive internal backleak from worn control valve seats drops common rail pressure below target under engine load.
P0201 - P0208High
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.
P0300 / P0301+High
Cylinder Misfire & Balancing Deviation
Carbon-clogged nozzle spray holes or missing IMA calibration causes uneven cylinder contribution. Recode ECM and verify washer seating.
P0088High
Fuel Rail / System Pressure Too High
Spill line backpressure or stuck metering valve prevents rail depressurization, creating overpressure risks under load.
PROTOCOLES D'ATELIER
Protocoles Techniques de Diagnostic & Réparation
Procédures d'atelier vérifiées, seuils de test et guides d'intervention pour cet ensemble.
DIAGNOSTIC COMMON RAIL D
Lire le protocole techniqueDiagnostic Pompe Haute Pression: Code P0087 & Bosch CP4
DIAGNOSTIC COMMON RAIL D
Lire le protocole techniqueDiagnostic Régulateur Débit IMV SCV & Test P0088 CR
PROTOCOLE DE DIAGNOSTIC OBD-II
Lire le protocole techniqueGuide de diagnostic P0087 : Pression de rampe trop basse
DIAGNOSTIC TECHNIQUE COMMON RAIL
Lire le protocole technique