23209-25010
DENSO 23209-25010 Högtrycksinjektor Toyota Camry RAV4 2.5L A25A D-4S
23290-25010, 23209-F0010, 297500-1580High-Speed Electromagnetic Multi-Hole Micro Nozzle-200 barTekniska specifikationer
| Specifikation | Värde |
|---|---|
| Systemtyp | Denso Multi-Hole Direct Gasoline Fuel Injector |
| ArbetstryckHuvudspec. | |
| Spray Pattern | Laser-drilled multi-hole fan pattern targeted at intake tumble flow |
| Fuel Rail Bolt Torque | 21 N·m (flanged holding bracket bolts) |
| High Pressure Pipe Torque | 32 N·m Flare Nut Connection |
| Coil Resistance | 1.7 - 2.1 Ω at 20°C (High-speed pulse driver circuit) |
| Vanliga felkoder | P0300 (Random Misfire), P0301-P0304 (Cylinder Misfire), P0171 (System Too Lean) |
| Workshop Precaution | Replace blue Teflon combustion chamber seal ring using expansion mandrel and calibration collar |
Matchande högtryckspump (Bränslekretsmontering)
Fungerar på samma högtrycks-common-railkrets. Vid lågt railtryck (P0087), kontrollera pumpens flöde innan injektorer byts ut.
Monteringsanvisningar
- [
- {
- "step": 1,
- "title": "Depressurize Fuel System & Remove Air Intake Cleaner",
- "instruction": "Depressurize direct injection circuit via fuel pump circuit breaker or scan tool command. Remove engine acoustic cover and intake resonator ducting."
- },
- {
- "step": 2,
- "title": "Disconnect Injector Harness & High Pressure Fuel Pipe",
- "instruction": "Unplug electrical connectors from the direct injectors. Counter-hold the rail fitting and loosen the high pressure delivery pipe flare nuts (32 N·m)."
- },
- {
- "step": 3,
- "title": "Extract Injectors & Fit New Teflon Sealing Rings",
- "instruction": "Carefully draw out direct injectors using slide hammer tool. Fit new Teflon combustion seals over injector tips and compress with sizing sleeve."
- },
- {
- "step": 4,
- "title": "Torque Fuel Rail Bolts & High Pressure Line Connections",
- "instruction": "Seat injectors into cylinder head ports. Torque fuel rail mounting bolts to 21 N·m. Tighten high pressure pipe flare nut to 32 N·m. Verify zero fuel leakage."
- }
- ]
Felkoder (DTC) och Diagnosprotokoll
Vanliga diagnosfelkoder (DTC) som aktiveras nar denna common rail-injektor uppvisar slitage, kretsfel eller kalibreringsavvikelse:
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.
Tekniska Diagnos- och Serviceprotokoll
Verifierade verkstadsrutiner, testgränsvärden och serviceinstruktioner för denna komponent.