Acura TSX / Honda Accord CL. Manual - part 641

Fig. 25: Checking Clearance Between The Port & The Valve 

5. Connect the battery positive terminal to VTC oil control solenoid valve 2P connector terminal No. 2. 

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE VTEC/VTC - TSX

  

 

Fig. 26: Connecting Battery To VTC Oil Control Solenoid Valve 2P Connector 

6. Connect the battery negative terminal to VTC oil control solenoid valve 2P connector terminal No. 1. 

Clearance (A) should be at least 1.2 mm (1/16 in.). If the valve does not open, replace it, then go to step 
7. 

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE VTEC/VTC - TSX

  

 

Fig. 27: Checking VTC Oil Control Solenoid Valve Clearance 

7. Remove the VTC valve O-ring (A). 

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE VTEC/VTC - TSX

  

 

Fig. 28: Installing VTC Oil Control Solenoid Valve 

8. Coat a new O-ring with engine oil, then install it.  

9. Clean and dry the mating surface of the valve.  

10. Install the valve. 

VTEC SOLENOID VALVE INSPECTION 

1. Disconnect the VTEC solenoid valve connector and the VTEC oil pressure switch connector.  

2. Remove the VTEC solenoid valve assembly from the cylinder head (see VTEC SOLENOID VALVE 

REMOVAL/INSTALLATION ).  

3. Measure resistance between VTEC solenoid valve connector terminals No. 1 and No. 2. 

Resistance: 14-30 ohm 

NOTE:

Do not install the valve while wearing fiberous cloth gloves. Be careful not 
to contaminate the cylinder head opening.

 

2004 Acura TSX 

2004 ENGINE PERFORMANCE VTEC/VTC - TSX