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Vtec Acura TL IV рестайлинг

Mechanical 12 illustrations ~2977 words

Scheme 572

Scheme 572: Component Location Index
Scheme 572: Component Location Index

DTC P2646: Rocker Arm Oil Pressure Switch Circuit Low Voltage

Special Tools Required

  1. Pressure Gauge Adapter 07NAJ-P07010A
  2. A/T Low Pressure Gauge w/Panel 07406-0070301
  3. AT Pressure Test Hose 07AAJ-PY4A100
  4. A/T Pressure Adapter 07MAJ-PY40120
  5. Oil Pressure Hose 07ZAJ-S5AA200

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 573

Scheme 573
Scheme 573

Scheme 574

Scheme 574
Scheme 574
  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 19 .
  2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
  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 ECM/PCM. • NO - Go to step 5.
  5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
  6. Disconnect the rocker arm oil pressure switch 2P connector.
  7. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
  8. Check the VTEC PRES SW in the DATA LIST with the HDS. Is switch ON indicated? YES - Go to step 14 . NO - Go to step 9.
  9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
  10. Remove the rocker arm oil pressure switch (A), attach the special tools as shown in illustration below, then attach the rocker arm oil pressure switch to the oil pressure gauge adapter (B).
  11. Start the engine.
  12. Do the VTEC TEST in the INSPECTION MENU with the HDS.
  13. 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»(/acura/tl/iv-2011-2014/remont/mechanical/#vtec) , then go to step 18 . NO - Inspect the VTEC system. If it is OK, replace the «rocker arm oil control solenoid»(/acura/tl/iv-2011-2014/remont/mechanical/#vtec) , then go to step 18 .
  14. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
  15. Jump the SCS line with the HDS.
  16. Disconnect ECM/PCM connector B (49P).
  17. Check for continuity between ECM/PCM connector terminal B20 and body ground. Is there continuity? YES - Repair short in the wire between the ECM/PCM (B20) and the rocker arm oil pressure switch, then go to step 18. NO - Go to step 24 .
  18. Reconnect all connectors.
  19. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
  20. Reset the ECM/PCM with the HDS.
  21. Do the ECM/PCM idle learn procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#idle-control-system__ecmpcm-idle-learn-procedure) ).
  22. Do the VTEC TEST in the INSPECTION MENU with the HDS.
  23. Check for Pending or Confirmed 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 ECM/PCM, then go to step 1 . NO - Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
  24. Reconnect all connectors.
  25. Update the ECM/PCM if it does not have the latest software (see «ECM/PCM UPDATE»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-update) ), or substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-ecmpcm) ).
  26. Do the VTEC TEST in the INSPECTION MENU with the HDS.
  27. Check for Pending or Confirmed 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 ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-ecmpcm) ), then go to step 26 . If the ECM/PCM was substituted, go to step 1 . NO - If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-replacement) ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.

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 the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 575

Scheme 575: DTC P2647: Rocker Arm Oil Pressure Switch Circuit High Voltage
Scheme 575: DTC P2647: Rocker Arm Oil Pressure Switch Circuit High Voltage

Scheme 576

Scheme 576
Scheme 576

Scheme 577

Scheme 577
Scheme 577
  1. Check the engine oil level. Is the engine oil level OK? YES - Go to step 2. NO - Adjust the engine oil level, then go to step 17 .
  2. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
  3. Clear the DTC with the HDS.
  4. Check the rocker arm oil pressure switch in the DATA LIST with the HDS. Does the screen indicate OFF? 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 pressure switch, the rocker arm oil control solenoid, and the ECM/PCM.
  5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
  6. Disconnect the rocker arm oil pressure switch 2P connector.
  7. Connect rocker arm oil pressure switch 2P connector terminals No. 1 and No. 2 with a jumper wire.
  8. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
  9. Check the rocker arm oil pressure switch in the DATA LIST with the HDS. Does the screen indicate ON? YES - Replace the «rocker arm oil pressure switch»(/acura/tl/iv-2011-2014/remont/mechanical/#vtec) , then go to step 16 . NO - Go to step 10.
  10. Turn the ignition switch to LOCK(0), or press the engine start/stop button to select the OFF mode.
  11. Remove the jumper wire from the rocker arm oil pressure switch.
  12. Jump the SCS line with the HDS.
  13. Disconnect ECM/PCM connector B (49P).
  14. Check for continuity between ECM/PCM connector terminal B20 and rocker arm oil pressure switch 2P connector terminal No. 1. Is there continuity? YES - Go to step 15. NO - Repair open in the wire between the ECM/PCM (B20) and the rocker arm oil pressure switch, then go to step 16 .
  15. Check for continuity between the rocker arm oil pressure switch 2P connector terminal No. 2 and body ground. Is there continuity? YES - Go to step 22 . NO - Repair open in the wire between the rocker arm oil pressure switch and G101; M/T (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(/acura/tl/iv-2011-2014/remont/body-electrical/#fuserelay-boxes__connector-to-fuserelay-box-index) ), ATT (see «CONNECTOR TO FUSE/RELAY BOX INDEX»(/acura/tl/iv-2011-2014/remont/body-electrical/#fuserelay-boxes__connector-to-fuserelay-box-index) ), then go to step 16.
  16. Reconnect all connectors.
  17. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
  18. Reset the ECM/PCM with the HDS.
  19. Do the ECM/PCM idle learn procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#idle-control-system__ecmpcm-idle-learn-procedure) ).
  20. Check for Pending or Confirmed DTCs with the HDS. Is DTC P2647 indicated? YES - Check for poor connections or loose terminals at the rocker arm oil pressure switch, the rocker arm oil control solenoid, and the ECM/PCM, then go to step 1 . NO - Go to step 21.
  21. 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 Pending or Confirmed DTCs were indicated in step 20 , go to the indicated DTC's 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 ECM/PCM, then go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.
  22. Reconnect all connectors.
  23. Update the ECM/PCM if it does not have the latest software (see «ECM/PCM UPDATE»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-update) ), or substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-ecmpcm) ).
  24. Start the engine, and let it idle.
  25. Check for Pending or Confirmed DTCs with the HDS. Is DTC P2647 indicated? YES - Check for poor connections or loose terminals at the rocker arm oil pressure switch, the rocker arm oil control solenoid, and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-ecmpcm) ), then go to step 24 . If the ECM/PCM was substituted, go to step 1 . NO - Go to step 26.
  26. Monitor the OBD STATUS for DTC P2647 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 25 , go to the indicated DTC's 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 ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-ecmpcm) ), then go to step 24 . If the ECM/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 the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 578

Scheme 578: DTC P2648: Rocker Arm Oil Control Solenoid Circuit Low Voltage
Scheme 578: DTC P2648: Rocker Arm Oil Control Solenoid Circuit Low Voltage

Scheme 579

Scheme 579
Scheme 579
  1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
  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 ECM/PCM. • NO - Go to step 4.
  4. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
  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 ECM/PCM connector B (49P).
  9. Check for continuity between ECM/PCM connector terminal B39 and body ground. Is there continuity? YES - Repair short in the wire between the ECM/PCM (B39) 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/tl/iv-2011-2014/remont/mechanical/#vtec) ).
  11. Reconnect all connectors.
  12. Turn the ignition switch ON (II), or press the engine start/stop button to select the ON mode.
  13. Reset the ECM/PCM with the HDS.
  14. Do the ECM/PCM idle learn procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#idle-control-system__ecmpcm-idle-learn-procedure) ).
  15. Do the VTEC TEST in the INSPECTION MENU with the HDS.
  16. Check for Pending or Confirmed 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 ECM/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 Pending or Confirmed DTCs were indicated in step 16 , go to the indicated DTC's troubleshooting. • NO - If the screen indicates FAILED, check for poor connections or loose terminals at the rocker arm oil control solenoid and the ECM/PCM, then go to step 1 . If the screen indicates NOT COMPLETED, go to step 15 .
  18. Reconnect all connectors.
  19. Update the ECM/PCM if it does not have the latest software (see «ECM/PCM UPDATE»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-update) ), or substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-ecmpcm) ).
  20. Do the VTEC TEST in the INSPECTION MENU with the HDS.
  21. Check for Pending or Confirmed 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 ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-ecmpcm) ), then go to step 20 . If the ECM/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 ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 21 , go to the indicated DTC's troubleshooting. • NO - If the screen indicates FAILED, check for poor connections or loose terminals at the rocker arm oil control solenoid and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-ecmpcm) ), then go to step 20 . If the ECM/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 the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).

Scheme 580

Scheme 580: DTC P2649: Rocker Arm Oil Control Solenoid Circuit High Voltage
Scheme 580: DTC P2649: Rocker Arm Oil Control Solenoid Circuit High Voltage

Scheme 581

Scheme 581
Scheme 581
  1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
  2. Clear the DTC with the HDS.
  3. Start the engine. Hold the engine speed at 3, 000 RPM without load (A/T in P or N, M/T in neutral) until the radiator fan comes on, then let it idle.
  4. Check for Pending or Confirmed 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 ECM/PCM.
  5. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
  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 11 .
  8. Jump the SCS line with the HDS.
  9. Disconnect ECM/PCM connector B (49P).
  10. Check for continuity between ECM/PCM connector terminal B39 and the rocker arm oil control solenoid 1P connector terminal. Is there continuity? YES - Go to step 18 . NO - Repair open in the wire between the ECM/PCM (B39) and the rocker arm oil control solenoid, then go to step 12 .
  11. Replace the rocker arm oil control solenoid (see «Rocker Arm Oil Control Solenoid Replacement»(/acura/tl/iv-2011-2014/remont/mechanical/#vtec) ).
  12. Reconnect all connectors.
  13. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.
  14. Reset the ECM/PCM with the HDS.
  15. Do the ECM/PCM idle learn procedure (see «ECM/PCM IDLE LEARN PROCEDURE»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#idle-control-system__ecmpcm-idle-learn-procedure) ).
  16. Check for Pending or Confirmed 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 ECM/PCM, then go to step 1 . NO - Go to step 17.
  17. 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 Pending or Confirmed DTCs were indicated instep 16, go to the indicated DTC's troubleshooting. • NO - If the screen indicates FAILED, go to step 1 and recheck. If the screen indicates NOT COMPLETED, keep idling until a result comes on.
  18. Reconnect all connectors.
  19. Update the ECM/PCM if it does not have the latest software (see «ECM/PCM UPDATE»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-update) ), or substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-ecmpcm) ).
  20. Start the engine, and let it idle.
  21. Check for Pending or Confirmed 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 ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-ecmpcm) ), then recheck. If the ECM/PCM was substituted, go to step 1 . NO - Go to step 22.
  22. Monitor the OBD STATUS for DTC P2649 in the DTCs MENU with the HDS. Does the screen indicate PASSED? YES - If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM (see «ECM/PCM REPLACEMENT»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#pgm-fi-system__ecmpcm-replacement) ). If any other Pending or Confirmed DTCs were indicated in step 21 , go to the indicated DTC's troubleshooting. • NO - If the screen indicates FAILED, check for poor connections or loose terminals at the rocker arm oil control solenoid and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM (see «SUBSTITUTING THE ECM/PCM»(/acura/tl/iv-2011-2014/remont/testing-diagnostics/#fuel-and-emissions-systems__substituting-the-ecmpcm) ), then recheck. If the ECM/PCM was substituted, go to step 1 . If the screen indicates NOT COMPLETED, keep idling until a result comes on.

Scheme 582

Scheme 582: Rocker Arm Oil Control Solenoid Replacement
Scheme 582: Rocker Arm Oil Control Solenoid Replacement
  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 583

Scheme 583: Rocker Arm Oil Pressure Switch Removal/Installation
Scheme 583: Rocker Arm Oil Pressure Switch Removal/Installation
  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).

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