294200-0380 294200-0300 294200-0360 Scv Valve Suitable For Toyota 1KD 2KD For Common Rail

The SCV (Suction Control Valve) is a key component in diesel high-pressure common rail systems that controls fuel pressure, directly impacting engine performance, fuel economy, and emissions. Below is a detailed introduction to the three SCV valves: 294200-0380, 294200-0300, and 294200-0360, including applicable fuel pumps, vehicle models, years, and GM codes.

 

Applicable Fuel Pumps and Engines

Applicable Fuel Pump: Denso HP4 High-Pressure Fuel Pump

Applicable Engines:

Toyota 1KD-FTV (3.0L Diesel, 2005-2015)

Toyota 2KD-FTV (2.5L Diesel, 2004-2015)

Lexus 1VD-FTV (4.5L V8 Diesel, 2012+)

Applicable Models

Toyota: Hilux (2005-2015), Fortuner (2005-2015), Land Cruiser Prado (2004-2015)

Lexus: LX450d (2016+)

Universal Model Number (Interchangeable)

294200-0170 (Applicable to certain models)

294200-0180

 

 

Applicable Fuel Pump: Denso HP3 High-Pressure Fuel Pump

Applicable Engines:

Mitsubishi 4D56 (2.5L Diesel, 2000-2015)

Isuzu 4JJ1 (3.0L Diesel, 2005-2015)

Applicable Vehicles:

Mitsubishi: Pajero (2007-2015), Triton (L200, 2005-2015)

Isuzu: D-Max (2005-2012)

Universal Model Number (Interchangeable Model)

294200-0280

294200-0290

 

 

Applicable Fuel Pump: Denso HP4 High-Pressure Fuel Pump

Applicable Engines:

Toyota 1GD-FTV (2.8L Diesel, 2015+)

Mazda SKYACTIV-D 2.2 (2012+)

Applicable Models

Toyota: Hilux (2015+), Fortuner (2015+), Land Cruiser 300 (2021+)

Mazda: CX-5 (2012+), BT-50 (2011+, shared platform with Ford Ranger)

Interchangeable Model Number

294200-0370

294200-0400

 

 

 

Toyota: Hilux (2015+), Fortuner (2015+), Land Cruiser 300 (2021+)

Mazda: CX-5 (2012+), BT-50 (2011+, shared platform with Ford Ranger)

Interchangeable Model Number

294200-0370

294200-0400
 

Denso SCV Valve Compatible Fuel Pumps and Fuel Pump Maintenance Procedures

I. Fuel Pump Models Compatible with Three SCV Valves

SCV Valve Model Compatible Denso Fuel Pump Model Compatible Engines

294200-0380 HP4 (High-Pressure Common Rail Pump) Toyota 1KD/2KD-FTV, Lexus 1VD-FTV

294200-0300 HP3 (High-Pressure Common Rail Pump) Mitsubishi 4D56, Isuzu 4JJ1

294200-0360 HP4 (High-Pressure Common Rail Pump) Toyota 1GD-FTV, Mazda SKYACTIV-D 2.2

II. Denso HP3/HP4 High-Pressure Fuel Pump Maintenance Procedures

1. Initial Inspection

Fuel Pump Visual Inspection: Check for fuel leaks, housing cracks, or loose bolts.

Inspect the fuel inlet and return lines: Ensure there are no blockages, deformations, or leaks due to aging.

2. Low-Pressure Fuel System Test

Use a fuel pressure gauge to measure the low-pressure fuel pressure (typically 3-6 bar).

If the pressure is insufficient, check:

Is the fuel filter clogged?

Is the low-pressure fuel pump (in the fuel tank) operating properly?

Is there air or leaks in the fuel line?

3. High-Pressure Fuel Pressure Test

Connect the high-pressure fuel pressure sensor or a diagnostic tool and read the real-time reading:

At idle: 250-400 bar

Under high load: 1600-2000 bar (depending on the engine model)

If the pressure is abnormal, possible causes include:

SCV valve malfunction (requires separate testing)

Internal wear of the high-pressure fuel pump (damaged plunger/relief valve)

Common rail pressure sensor malfunction

4. SCV Valve Special Inspection (using 294200-0380 as an example)

Resistance Test: Disconnect the connector and measure the SCV valve resistance (typical value: 3-6 Ω).

Power-on Test: Briefly apply power to the 12V power supply and listen for a "clicking" sound (normal valve spool operation).

Signal Testing: Use an oscilloscope to check the PWM signal sent by the ECU (frequency is typically 100-500Hz).

5. Fuel Pump Internal Inspection (Specialized Tools Required)

Fuel Pump Disassembly: Disassemble according to the maintenance manual, focusing on the following:

Wear of the plunger assembly (observe surface scratches)

Proper sealing of the relief valve

Any abnormal wear on the camshaft bearings

Replacing seals: All O-rings and gaskets must be genuine parts.

 

 

 

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