Suction Control Valves - ADT36846C

Certain models of Toyota fitted with the 2.0 D-4D engine can suffer with malfunctioning Suction Control Valves (or SCV for short), due to valve seat wear, which causes running issues such as a sudden lack of power which can be intermittent and often put the engine management light on.

Blue Print’s suction control valves - ADT36846C are covered by a 3 Year Unlimited Mileage Warranty.

Key applications include:

Model                     Engine                                    Year
Avensis                   2.0 D-4D (CDT220)                1999>2003
Avensis Verso        2.0 D-4D (CLM20)                   2001>2005
Corolla                    2.0 D-4D (CDE110)                2000>2001
Corolla                    2.0 D-4D (CDE120)                2001>2007
Corolla Verso         Corolla 2.0 D-4D (CDE120)    2001>2004
Previa                     2.0 D-4D (CLR30)                  2001>2007
RAV4                      2.0 D-4D (CLA20/21)             2001>2006

Blue Print has produced the following guide for replacing SCV’s on a Toyota RAV4, and the basic principals will be the same for other Toyota models: Repair time approximately 45 minutes.
Connecting an affected vehicle to suitable diagnostic equipment (such as the G-Scan) should show diagnostic trouble codes of P0627 (fuel pump control circuit open) or 78 (fuel circuit malfunction).

2003 Toyota RAV4 2.0 D-4D engine compartment
• Unbolt the radiator expansion bottle (2 nuts) and move it to one side to gain access to the fuel pump. You may wish to disconnect the upper hose and plug, to give you more room.
• Remove the air intake/intercooler pipe.
• The fuel pump is now visible (just to the left of the starter motor). Make sure the area around the green and red SCV’s is as clean as possible to reduce the risk of debris entering the pump.
• Disconnect the wiring connectors from the SCV’s.
• Remove the four SCV mounting bolts (two per valve) and then remove the two valves from the pump making sure you note the positions of the red and green valves (red at the front).
• Although the seals on the new valves are pre-lubricated, it is good practice to apply a little engine oil to the seals to reduce the risk of damage during fitting.
• Ensuring the mounting area is clean, install the valves carefully making sure that they are installed in their correct positions and that the valve flange fits flush to the pump before tightening the fixing bolts to 13Nm (10lb-ft).
• The rest of the fitting procedure is the reverse of the removal
• The engine diagnostic trouble codes using a suitable diagnostics tool before road testing the vehicle.