( TL19E20A14680300000FAAT00 )

VTEC System Oil Pressure Troubleshooting

Special Tools Required
Oil pressure gauge joint attachment
07NAJ-P070100
Low pressure gauge assy. 1,000 kPa
07406-0070002
Oil pressure hose
07ZAJ-S5A0200
NOTE:

- Check for Temporary DTCs or DTCs with the HDS before this procedure. If there are any DTCs indicated, troubleshoot them first, then do this procedure.
- Check that the oil pressure indicator goes off after starting engine before this procedure.

1. Turn the ignition switch to ON (II).

1. Do the VTEC TEST in the INSPECTION MENU with the HDS.

Can you hear the rocker arm oil control solenoid click?

YES | - | Go to Step 6 .
NO | - | Go to Step 3 .

1. Turn the ignition switch to LOCK (0).

1. Disconnect the rocker arm oil control solenoid 2P connector.

1. Connect the battery positive terminal (+) to terminal No. 1, and the negative terminal (−) with a wire.

Is the rocker arm oil control solenoid clicking?

YES | - | Update the ECM/PCM if it does not have the latest software, or substitute a known-good ECM/PCM, then recheck. If the symptom/indication goes away with a known-good ECM/PCM, replace the original ECM/PCM. ■
NO | - | Go to Step 22 .

1. Turn the ignition switch to LOCK (0).

1. Remove the bolt (A) from the rocker arm oil control valve and connect the special tool as shown, the install the bolt (A) that was removed to the oil pressure gauge joint attachment (B).

1. Start the engine. Hold the engine speed at 3,000 rpm (min −1 ) without load (A/T in P or N, M/T in neutral) until the radiator fan comes on.

1. Check the oil pressure at the engine speed of 1,000 to 2,000 rpm (min −1 ).
   NOTE: Keep the measuring time as short as possible (less than 1 minute).

Is the oil pressure below 49 kPa (0.5 kgf/cm 2 , 7 psi)?

YES | - | Go to Step 10 .
NO | - | Go to Step 22 .

1. Turn the ignition switch to LOCK (0).

1. Disconnect the rocker arm oil control solenoid 2P connector.

1. Connect the battery positive terminal (+) to terminal No. 1, and the negative terminal (−) with a wire.

1. Start the engine.

1. Check the oil pressure at the engine speed of 3,500 rpm (min −1 ).
   NOTE: Keep the measuring time as short as possible (less than 1 minute).

Is the oil pressure above 392 kPa (4.0 kgf/cm 2 , 56.9 psi)?

YES | - | The VTEC system oil pressure is normal.■
NO | - | Go to Step 15 .

1. Turn the ignition switch to LOCK (0).

1. Remove the rocker arm oil control valve.

1. Check the rocker arm oil control solenoid filter for dirt and clogging.

Is the rocker arm oil control solenoid filter dirty or clogged?

YES | - | Replace the engine oil, engine oil filter, and the rocker arm oil control solenoid filter, then go to Step 18 .
NO | - | Go to Step 22 .

1. Remove the bolt (A) from the rocker arm oil control valve and connect the special tool as shown, the install the bolt (A) that was removed to the oil pressure gauge joint attachment (B).

1. Connect the battery positive terminal (+) to terminal No. 1, and the negative terminal (−) with a wire.

1. Start the engine.

1. Check the oil pressure at the engine speed of 3,500 rpm (min −1 ).
   NOTE: Keep the measuring time as short as possible (less than 1 minute).

Is the oil pressure above 392 kPa (4.0 kgf/cm 2 , 56.9 psi)?

YES | - | Troubleshooting is complete.■
NO | - | Go to Step 22 .

1. Replace the rocker arm oil control valve.

1. Remove the bolt (A) from the rocker arm oil control valve and connect the special tool as shown, the install the bolt (A) that was removed to the oil pressure gauge joint attachment (B).

1. Connect the battery positive terminal (+) to terminal No. 1, and the negative terminal (−) with a wire.

1. Start the engine.

1. Check the oil pressure at the engine speed of 3,500 rpm (min −1 ).
   NOTE: Keep the measuring time as short as possible (less than 1 minute).

Is the oil pressure above 392 kPa (4.0 kgf/cm 2 , 56.9 psi)?

YES | - | Troubleshooting is complete.■
NO | - | Clean the oil passage of the cylinder block or replace the cylinder block.■