Variable Valve Timing and Lift Electronic Control (vtec) Acura RL II рестайлинг

Scheme 336

Special Tools Required

1. Pressure gauge adapter 07NAJ-P07010A
2. A/T low pressure gauge w/panel 07406-0070301
3. A/T pressure hose 07406-0020201
4. A/T pressure hose, 2,210 mm 07MAJ-PY4011A
5. A/T pressure adapter 07MAJ-PY40120
6. Oil pressure hose 07ZAJ-S5AA200

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review GENERAL TROUBLESHOOTING INFORMATION .

Scheme 337

Scheme 338

1. Check the engine oil level. Is the engine oil level OK? YES - Go to step 2 . NO - Adjust the engine oil to the proper level, then go to step 20 .
2. Turn the ignition switch to ON (II).
3. Clear the DTC with the HDS.
4. Do the VTEC TEST in the INSPECTION MENU with the HDS. Is the result OK? YES - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the rocker arm oil pressure switch, the rocker arm oil control solenoid, and the PCM. NO - Go to step 5 .
5. Turn the ignition switch to LOCK (0).
6. Disconnect the rocker arm oil pressure switch 2P connector.
7. Turn the ignition switch to ON (II).
8. Check the VTEC PRES SW in the DATA LIST with the HDS. Is SWITCH ON indicated? YES - Go to step 15 . NO - Go to step 9 .
9. Turn the ignition switch to LOCK (0).
10. Remove the rocker arm oil pressure switch (A), install the special tools as shown, then install the rocker arm oil pressure switch on the oil pressure gauge adapter (B). NOTE: Install the parts in the reverse order of removal with a new O-ring.
11. Reconnect the rocker arm oil pressure switch 2P connector.
12. Start the engine.
13. Do the VTEC TEST in the INSPECTION MENU with the HDS.
14. Check the oil pressure. Does the oil pressure increase to at least 392 kPa (4.0 kgf/cm 2 , 56.9 psi)? YES - Replace the rocker arm oil pressure switch (see «ROCKER ARM OIL PRESSURE SWITCH REMOVAL/INSTALLATION»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#variable-valve-timing-and-lift-electronic-control-vtec) ), then go to step 19 . NO - Inspect the following items. If they are OK, replace the rocker arm oil control solenoid (see «ROCKER ARM OIL CONTROL SOLENOID REPLACEMENT»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#variable-valve-timing-and-lift-electronic-control-vtec) ), then go to step 19 . VTEC system's oil line Operation of the rocker arm (see «VTEC ROCKER ARM TEST»(/acura/rl/ii-2008-2012/remont/mechanical/#cylinder-head) )
15. Turn the ignition switch to LOCK (0).
16. Jump the SCS line with the HDS.
17. Disconnect PCM connector A (31P).
18. Check for continuity between PCM connector terminal A23 and body ground. Is there continuity? YES - Repair short in the wire between the PCM (A23) and the rocker arm oil pressure switch, then go to step 19 . NO - Go to step 26 .
19. Reconnect all connectors.
20. Turn the ignition switch to ON (II).
21. Reset the PCM with the HDS.
22. Do «PCM IDLE LEARN PROCEDURE»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#idle-control-system__pcm-idle-learn-procedure) .
23. Do the VTEC TEST in the INSPECTION MENU with the HDS.
24. Check for Temporary DTCs or DTCs with the HDS. Is DTC P2646 indicated? YES - Check for poor connections or loose terminals at the rocker arm oil pressure switch, the rocker arm oil control valve, and the PCM, then go to step 1 . NO - Go to step 25 .
25. Monitor the OBD STATUS for DTC P2646 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 24, go to the indicated DTCs troubleshooting. NO - If the screen indicates FAILED, check for poor connections or loose terminals at the rocker arm oil pressure switch, the rocker arm oil control valve, and the PCM, then go to step 1 . If the screen indicates NOT COMPLETED, go to step 23 .
26. Reconnect all connectors.
27. Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-pcm) ).
28. Do the VTEC TEST in the INSPECTION MENU with the HDS.
29. Check for Temporary DTCs or DTCs with the HDS. Is DTC P2646 indicated? YES - Check for poor connections or loose terminals at the rocker arm oil pressure switch, the rocker arm oil control solenoid, and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO - Go to step 30 .
30. Monitor the OBD STATUS for DTC P2646 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). If any other Temporary DTCs or DTCs were indicated in step 28, go to the indicated DTCs troubleshooting. NO - If the screen indicates FAILED, check for poor connections or loose terminals at the rocker arm oil pressure switch, the rocker arm oil control solenoid, and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.

DTC P2647: Rocker Arm Oil Pressure Switch Circuit High Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review GENERAL TROUBLESHOOTING INFORMATION .

Scheme 339

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Scheme 341

1. Check the engine oil level. Is the engine oil level OK? YES - Go to step 2 . NO - Adjust the engine oil to the proper level, then go to step 17 .
2. Turn the ignition switch to ON (II).
3. Clear the DTC with the HDS.
4. Do the VTEC TEST in the INSPECTION MENU with the HDS. Is the result OK? YES - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the rocker arm oil pressure switch and the PCM. NO - Go to step 5 .
5. Check the result of step 4. Rocker arm oil pressure switch Failure Rocker arm oil pressure switch Open Rocker arm oil pressure switch SIG Line Open Rocker arm oil pressure switch GND Line Open Is the test result any of the above? YES - Go to step 6 . NO - Check for poor connections or loose terminals at the rocker arm oil pressure switch. If it is OK, replace the rocker arm oil control solenoid (see «ROCKER ARM OIL CONTROL SOLENOID REPLACEMENT»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#variable-valve-timing-and-lift-electronic-control-vtec) ), then go to step 17 .
6. Turn the ignition switch to LOCK (0).
7. Disconnect the rocker arm oil pressure switch 2P connector.
8. At the rocker arm oil pressure switch side, check for continuity between rocker arm oil pressure switch 2P connector terminals No. 1 and No. 2. Is there continuity? YES - Go to step 9 . NO - Replace the rocker arm oil pressure switch (see «ROCKER ARM OIL PRESSURE SWITCH REMOVAL/INSTALLATION»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#variable-valve-timing-and-lift-electronic-control-vtec) ), then go to step 16 .
9. Turn the ignition switch to ON (II).
10. Measure the voltage between rocker arm oil pressure switch 2P connector terminal No. 1 and body ground. Is there battery voltage? YES - Repair open in the wire between the rocker arm oil pressure switch and G101, then go to step 13 . NO - Go to step 11 .
11. Measure the voltage between PCM connector terminal A23 and body ground. Is there battery voltage? YES - Repair open in the wire between the PCM (A23) and the rocker arm oil pressure switch, then go to step 12 . NO - Go to step 19 .
12. Turn the ignition switch to LOCK (0).
13. Reconnect the all connectors.
14. Turn the ignition switch to ON (II).
15. Reset the PCM with the HDS.
16. Do «PCM IDLE LEARN PROCEDURE»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#idle-control-system__pcm-idle-learn-procedure) .
17. Check for Temporary DTCs or DTCs with the HDS. Is DTC P2647 indicated? YES -Check for poor connections or loose terminals at the rocker arm oil pressure switch and the PCM, then go to step 1 . NO - Go to step 18 .
18. Monitor the OBD STATUS for DTC P2647 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 17, go to the indicated DTCs troubleshooting. NO - If the screen indicates FAILED, check for poor connections or loose terminals at the rocker arm oil pressure switch and the PCM, then go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.
19. Turn the ignition switch to LOCK (0).
20. Reconnect all connectors.
21. Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-pcm) ).
22. Check for Temporary DTCs or DTCs with the HDS. Is DTC P2647 indicated? YES - Check for poor connections or loose terminals at the rocker arm oil pressure switch and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO - Go to step 23 .
23. Monitor the OBD STATUS for DTC P2647 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). If any other Temporary DTCs or DTCs were indicated in step 22, go to the indicated DTCs troubleshooting. NO - If the screen indicates FAILED, check for poor connections or loose terminals at the rocker arm oil pressure switch and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.

DTC P2648: Rocker Arm Oil Control Solenoid Circuit Low Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review GENERAL TROUBLESHOOTING INFORMATION .

Scheme 342

Scheme 343

1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Do the VTEC TEST in the INSPECTION MENU with the HDS. Is the result OK? YES - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the rocker arm oil control solenoid and the PCM. NO - Go to step 4 .
4. Turn the ignition switch to LOCK (0).
5. Disconnect the rocker arm oil control solenoid 1P connector.
6. At the solenoid side, measure the resistance between the rocker arm oil control solenoid 1P connector terminal and the solenoid valve body. Is there 14-30 ohms at room temperature? YES - Go to step 7 . NO - Go to step 10 .
7. Jump the SCS line with the HDS.
8. Disconnect PCM connector A (31P).
9. Check for continuity between PCM connector terminal A22 and body ground. Is there continuity? YES - Repair short in the wire between the PCM (A22) and the rocker arm oil control solenoid, then go to step 11 . NO - Go to step 18 .
10. Replace the rocker arm oil control solenoid (see «ROCKER ARM OIL CONTROL SOLENOID REPLACEMENT»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#variable-valve-timing-and-lift-electronic-control-vtec) ).
11. Reconnect all connectors.
12. Turn the ignition switch to ON (II).
13. Reset the PCM with the HDS.
14. Do «PCM IDLE LEARN PROCEDURE»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#idle-control-system__pcm-idle-learn-procedure) .
15. Do the VTEC TEST in the INSPECTION MENU with the HDS.
16. Check for Temporary DTCs or DTCs with the HDS. Is DTC P2648 indicated? YES - Check for poor connections or loose terminals at the rocker arm oil control solenoid and the PCM, then go to step 1 . NO - Go to step 17 .
17. Monitor the OBD STATUS for DTC P2648 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 16, go to the indicated DTCs troubleshooting. NO - If the screen indicates FAILED, check for poor connections or loose terminals at the rocker arm oil control solenoid and the PCM, then go to step 1 . If the screen indicates NOT COMPLETED, go to step 15 .
18. Reconnect all connectors.
19. Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-pcm) ).
20. Do the VTEC TEST in the INSPECTION MENU with the HDS.
21. Check for Temporary DTCs or DTCs with the HDS. Is DTC P2648 indicated? YES - Check for poor connections or loose terminals at the rocker arm oil control solenoid and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO - Go to step 22 .
22. Monitor the OBD STATUS for DTC P2648 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). If any other Temporary DTCs or DTCs were indicated in step 21, go to the indicated DTCs troubleshooting. NO - If the screen indicates FAILED, check for poor connections or loose terminals at the rocker arm oil control solenoid and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, go to step 20 .

DTC P2649: Rocker Arm Oil Control Solenoid Circuit High Voltage

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review GENERAL TROUBLESHOOTING INFORMATION .

Scheme 344

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Scheme 346

1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
4. Check for Temporary DTCs or DTCs with the HDS. Is DTC P2649 indicated? YES - Go to step 5 . NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the rocker arm oil control solenoid and the PCM.
5. Turn the ignition switch to LOCK (0).
6. Disconnect the rocker arm oil control solenoid 1P connector.
7. At the solenoid side, measure the resistance between the rocker arm oil control solenoid 1P connector terminal and the solenoid valve body. Is there 14-30 ohms at room temperature? YES - Go to step 8 . NO - Go to step 12 .
8. Jump the SCS line with the HDS.
9. Disconnect PCM connector A (31P).
10. Connect the rocker arm oil control solenoid 1P connector terminal to body ground with a jumper wire.
11. Check for continuity between PCM connector terminal A22 and body ground. Is there continuity? YES - Go to step 20 . NO - Repair open in the wire between the PCM (A22) and the rocker arm oil control solenoid, then go to step 13 .
12. Replace the rocker arm oil control solenoid (VTEC solenoid valve) (see «ROCKER ARM OIL CONTROL SOLENOID REPLACEMENT»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#variable-valve-timing-and-lift-electronic-control-vtec) ).
13. Reconnect all connectors.
14. Turn the ignition switch to ON (II).
15. Reset the PCM with the HDS.
16. Do «PCM IDLE LEARN PROCEDURE»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#idle-control-system__pcm-idle-learn-procedure) .
17. Start the engine. Hold the engine speed at 3,000 rpm without load (in P or N) until the radiator fan comes on, then let it idle.
18. Check for Temporary DTCs or DTCs with the HDS. Is DTC P2649 indicated? YES - Check for poor connections or loose terminals at the rocker arm oil control solenoid and the PCM, then go to step 1 . NO - Go to step 19 .
19. Monitor the OBD STATUS for DTC P2649 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 18, go to the indicated DTCs troubleshooting. NO - If the screen indicates FAILED, check for poor connections or loose terminals at the rocker arm oil control solenoid and the PCM, then go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.
20. Reconnect all connectors.
21. Update the PCM if it does not have the latest software (see «PCM UPDATE»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#pgm-fi-system__pcm-update) ), or substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-pcm) ).
22. Check for Temporary DTCs or DTCs with the HDS. Is DTC P2649 indicated? YES - Check for poor connections or loose terminals at the rocker arm oil control solenoid and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . NO - Go to step 23 .
23. Monitor the OBD STATUS for DTC P2649 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM (see «PCM REPLACEMENT»(/acura/rl/ii-2008-2012/remont/testing-diagnostics/#pgm-fi-system__pcm-replacement) ). If any other Temporary DTCs or DTCs were indicated in step 21, go to the indicated DTCs troubleshooting. NO - If the screen indicates FAILED, check for poor connections or loose terminals at the rocker arm oil control solenoid and the PCM. If the PCM was updated, substitute a known-good PCM (see «SUBSTITUTING THE PCM»(/acura/rl/ii-2008-2012/remont/auxiliary-emission-control-systems/#fuel-and-emissions-systems__substituting-the-pcm) ), then recheck. If the PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.

Scheme 347

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Scheme 349

1. Disconnect the rocker arm oil control solenoid connector.
2. Measure the resistance between the rocker arm oil control solenoid 1P connector terminal (A) and body ground. If the resistance is as specified, go to step 3 . If the resistance is not as specified, replace the rocker arm oil control solenoid. Resistance: 14-30 ohms
3. Remove the rocker arm oil control solenoid/oil filter assembly (A) from the oil pump, and check the rocker arm oil control solenoid filter (B) for a restriction. If there is a restriction, replace the rocker arm oil control solenoid filter, the engine oil filter, and the engine oil.
4. If the filter is not restricted, remove the rocker arm oil control solenoid (A) and push the valve (B) with your finger to check its movement. If the valve moves freely, it is normal, check the engine oil pressure (see «OIL PRESSURE TEST»(/acura/rl/ii-2008-2012/remont/lubrication-system/#engine-lubrication__oil-pressure-test) ). If the valve binds or sticks, replace the rocker arm oil control solenoid assembly.

Scheme 350

1. Disconnect the rocker arm oil control solenoid connector (A).
2. Remove the rocker arm oil control solenoid (B).
3. Install the parts in the reverse order of removal with a new O-ring (C).

Scheme 351

1. Disconnect the rocker arm oil pressure switch connector (A), then remove the rocker arm oil pressure switch (B).
2. Install the parts in the reverse order of removal with a new O-ring (C).

See also:
• GENERAL TROUBLESHOOTING INFORMATION
• VTEC ROCKER ARM TEST
• PCM IDLE LEARN PROCEDURE
• PCM UPDATE
• SUBSTITUTING THE PCM
• PCM REPLACEMENT
• OIL PRESSURE TEST
• ROCKER ARM OIL PRESSURE SWITCH REMOVAL/INSTALLATION