HITACHI
16625AA040
Vedi Specifiche
SolenoidSubaru Direct Injection Turbo (DIT) 200-bar Fuel SystemEuro 3306
HITACHI 16625AA040 Pompa Alta Pressione Subaru WRX Forester XT Ascent 2.0T 2.4T
RIFERIMENTO OE
16625AA000, HUP0044VALVOLA DI CONTROLLO
Integrated High-Speed Flow Control Spill ValvePOLVERIZZATORE
-PRESSIONE RAIL
200 barNORMATIVA EMISSIONITier 3 Bin 30 / Euro 6d / LEV III
GARANZIA12 Mesi
02
Applicazioni Veicolo e Motore
| Veicolo | Motore | Anni |
|---|---|---|
| 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
Specifiche Tecniche
| Specifica | Valore |
|---|---|
| Tipo di sistema | Hitachi Cam-Driven Single-Plunger Mechanical High-Pressure Fuel Pump |
| Pressione di esercizioSpecifica Chiave | |
| 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) |
| Codici guasto tipici | 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
Istruzioni di montaggio
- [
- {
- "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
Codici Guasto (DTC) e Protocolli Diagnostici
Codici guasto diagnostici (DTC) comuni generati quando questo iniettore common rail presenta usura, problemi ai circuiti o scostamenti:
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.
PROTOCOLLI OFFICINA
Protocolli Tecnici di Diagnosi & Assistenza
Procedure d'officina verificate, valori soglia di test e linee guida operative per questo assieme.
DIAGNOSI COMMON RAIL IN OFFICINA
Leggi il protocollo tecnicoDiagnosi Pompa Alta Pressione: Codice P0087 e Bosch CP4
DIAGNOSTICA COMMON RAIL D
Leggi il protocollo tecnicoDiagnosi Valvola Dosatrice IMV SCV ZME & Test P0088
PROTOCOLLO DIAGNOSTICO OBD-II
Leggi il protocollo tecnicoGuida alla diagnosi del codice P0087: Bassa pressione rail
DIAGNOSI D
Leggi il protocollo tecnico