VTEC System Oil Pressure Troubleshooting (2.0L Engine): Inspection

Rocker Arm Oil Control Solenoid Functional Inspection 

Test Procedure 

• Preparation
• • Rocker arm oil control solenoid 2P connector: disconnected

• Procedure
• • Jump the rocker arm oil control solenoid 2P connector terminal No. 1 and 12 volt battery positive terminal with a jumper wire.
  • Jump the rocker arm oil control solenoid 2P connector terminal No. 2 and 12 volt battery negative terminal with a jumper wire.

	(Disconnected) Rocker arm oil control solenoid 2P connector male terminals
	Courtesy of HONDA, U.S.A., INC.

• Normal Conditions
• • There is a clicking sound from the rocker arm oil control solenoid.

Results 

• If it is abnormal, there is a problem with the rocker arm oil control valve.

Rocker Arm Oil Control Valve Functional Inspection (Close Operation) 

Preconditions 

• VTEC System Oil Passage Inspection is normal

Test Procedure 

Oil pressure inspection

• Preparation
• • Engine oil: Pour engine oil to the specified level
  • Engine oil pressure: The low oil pressure warning message is not displayed on with the engine running

• Procedure
• • Turn the vehicle to the OFF (LOCK) mode.
  • Disconnect the rocker arm oil pressure sensor 3P connector.
  • Remove the rocker arm oil pressure sensor (A) from the rocker arm oil control valve (B), and attach the oil pressure gauge joint attachment (C), the oil pressure hose (D), and the A/T Low pressure gauge (E) as shown, then attach the rocker arm oil pressure sensor with specified torque that was removed to the oil pressure gauge joint attachment.
  • Reconnect the rocker arm oil pressure sensor 3P connector.
  • Start the engine. Hold the engine speed at 3, 000 rpm without load (in P or N) until the radiator fan comes on.
  • Check the VTEC oil pressure at the engine speed of 1, 000 to 2, 000 rpm.
    NOTE: Keep the measuring time as short as possible (less than 1 minute).

Courtesy of HONDA, U.S.A., INC.

• Normal Conditions
• • Oil pressure is below 49 kPa (0.5 kgf/cm 2, 7 psi)  .

Results 

• If it is abnormal, there is a problem with the rocker arm oil control valve.

Rocker Arm Oil Control Valve Functional Inspection (Open Operation) 

Preconditions 

• VTEC System Oil Passage Inspection is normal

Test Procedure 

Oil pressure inspection

• Preparation
• • Engine oil: Pour engine oil to the specified level
  • Engine oil pressure: The low oil pressure warning message is not displayed on with the engine running

• Procedure
• • Turn the vehicle to the OFF (LOCK) mode.
  • Disconnect the rocker arm oil pressure sensor 3P connector.
  • Remove the rocker arm oil pressure sensor (A) from the rocker arm oil control valve (B), and attach the oil pressure gauge joint attachment (C), the oil pressure hose (D), and the A/T Low pressure gauge (E) as shown, then attach the rocker arm oil pressure sensor with specified torque that was removed to the oil pressure gauge joint attachment.
  • Reconnect the rocker arm oil pressure sensor 3P connector.
  • Jump the rocker arm oil control solenoid 2P connector terminal No. 1 and 12 volt battery positive terminal with a jumper wire.
  • Jump the rocker arm oil control solenoid 2P connector terminal No. 2 and 12 volt battery negative terminal with a jumper wire.
  • Start the engine.
  • Check the VTEC oil pressure at the engine speed of 3, 500 rpm.
  • NOTE: Keep the measuring time as short as possible (less than 1 minute).

    Courtesy of HONDA, U.S.A., INC.

	(Disconnected) Rocker arm oil control solenoid 2P connector male terminals
	Courtesy of HONDA, U.S.A., INC.

• Normal Conditions
• • Oil pressure is above 392 kPa (4.00 kgf/cm 2, 56.9 psi)  .

Results 

• If it is abnormal, there is a problem with the rocker arm oil control valve.

VTEC System Oil Passage Inspection 

Test Procedure 

• Preparation
• • Rocker arm oil control valve: removed

• Procedure
• • Check for dirt or clogs in the VTEC system oil passage and the rocker arm oil control valve filter.

• Normal Conditions
• • There is no dirt or clogs.

Results 

• If it is abnormal, there is a problem with the VTEC system oil passage.
  NOTE: If there is the problem, replace the engine oil and the engine oil filter after repairing it.

PCM Inspection 

Test Procedure 

• If the other inspection item(s) indicated a normal condition, then it is determined that the remaining PCM is the cause.

Results 

• There is a problem with the PCM.