VTEC System Oil Pressure Troubleshooting (Mexico models): Inspection

Rocker Arm Oil Control Solenoid Functional Inspection 

Test Procedure 

• Preparation
  1. -

     Rocker arm oil control solenoid connector (2P): disconnected

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

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

• Normal Conditions
  1. -

     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
  1. -

     Engine oil: Pour engine oil to the specified level

  2. -

     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.
  • Remove the bolt (A) from the rocker arm oil control valve (B), and attach the oil pressure hose (C), the pressure gauge adapter (D), the A/T pressure adapter (E), the A/T pressure test hose (F), and the A/T low pressure gauge w/panel (G) as shown, then attach the bolt with specified torque to the pressure gauge adapter.
  • 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
  1. -

     The 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
  1. -

     Engine oil: Pour engine oil to the specified level

  2. -

     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.
  • Remove the bolt (A) from the rocker arm oil control valve (B), and attach the oil pressure hose (C), the pressure gauge adapter (D), the A/T pressure adapter (E), the A/T pressure test hose (F), and the A/T low pressure gauge w/panel (G) as shown, then attach the bolt with specified torque to the pressure gauge adapter.
  • Jump the rocker arm oil control solenoid connector (2P) terminal No. 1 and the 12 volt battery positive terminal with a jumper wire.
  • Jump the rocker arm oil control solenoid connector (2P) terminal No. 2 and the 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 connector (2P) male terminals
	Courtesy of HONDA, U.S.A., INC.

• Normal Conditions
  1. -

     The 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
  1. -

     Rocker arm oil control valve: removed

• Procedure
  1. -

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

• Normal Conditions
  1. -

     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.