VTEC System Oil Pressure Troubleshooting
VTEC System Oil Pressure Troubleshooting
NOTE:
Check that the oil level is correct and that the oil pressure indicator goes off after starting engine before this procedure.
Check for Pending DTCs or DTCs with the HDS before this procedure. If there are any DTCs indicated, troubleshoot them first, then do this procedure.
DTC Description
Confirmed DTC
Pending DTC
Freeze Frame
1.
VTEC system operation check (with HDS):
VTEC system operation check (with HDS)
?1.
Turn the vehicle to the ON mode.
?2.
Select the VTEC TEST in the INSPECTION MENU with the HDS.
VTEC TEST
Can you hear the rocker arm oil control solenoid click?
2.
Rocker arm oil control solenoid operation check:
Rocker arm oil control solenoid operation check
?1.
Turn the vehicle to the OFF (LOCK) mode.
?2.
Disconnect the following connector.
Rocker arm oil control solenoid 2P connector
?3.
At the solenoid side, connect terminals A and B with a jumper wire.
Terminal A
Rocker arm oil control solenoid 2P connector No. 1 (rocker arm oil control solenoid side)
Terminal B
12 volt battery positive terminal
Terminal A
Rocker arm oil control solenoid 2P connector No. 2 (rocker arm oil control solenoid side)
Terminal B
12 volt battery negative terminal
Is the rocker arm oil control solenoid clicking?
3.
VTEC system oil pressure check:
VTEC system oil pressure check
?1.
Turn the vehicle to the OFF (LOCK) mode.
?2.
Remove the bolt (A) from the rocker arm oil control valve, and attach the special tools as shown, then attach the bolt that was removed to the oil pressure gauge adapter (B).
?3.
Start the engine. Hold the engine speed at 3,000 rpm without load (CVT in P or N, M/T in neutral) until the radiator fan comes on.
?4.
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).
Is the oil pressure below 49 kPa (0.5 kgf/cm2 , 7 psi)?
VTEC system oil pressure is OK. Go to step 4.
4.
Rocker arm oil control solenoid operation check:
Rocker arm oil control solenoid operation check
?1.
Turn the vehicle to the OFF (LOCK) mode.
?2.
Disconnect the following connector.
Rocker arm oil control solenoid 2P connector
?3.
At the solenoid side, connect terminals A and B with a jumper wire.
Terminal A
Rocker arm oil control solenoid 2P connector No. 1 (rocker arm oil control solenoid side)
Terminal B
12 volt battery positive terminal
Terminal A
Rocker arm oil control solenoid 2P connector No. 2 (rocker arm oil control solenoid side)
Terminal B
12 volt battery negative terminal
?5.
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).
Is the oil pressure above 392 kPa (4.00 kgf/cm2 , 56.9 psi)?
The VTEC system oil pressure and the rocker arm oil control solenoid are OK.?
The oil pressure is lower than normal condition. Go to step 5.
5.
Rocker arm oil control valve filter visual check:
Rocker arm oil control valve filter visual check
?1.
Turn the vehicle to the OFF (LOCK) mode.
?3.
Check the rocker arm oil control valve filter for dirt and clogging.
Is the rocker arm oil control valve filter dirty or clogged?