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PCV System (v6) Acura TSX II

Auxiliary Emission Control Systems 4 illustrations ~524 words

Scheme 77

Scheme 77: Component Location Index
Scheme 77: Component Location Index

DTC P2279: Intake Air System Leak

Note. Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0443 is stored at the same time as DTC P2279, troubleshoot DTC P0443 first, then recheck for DTC P2279.

  1. Check for vacuum leaks at these parts: PCV valve PCV hose Purge (PCS) line Throttle body Intake manifold Brake booster Brake booster hose Engine mount Engine mount control solenoid valve Vacuum hose/line of the engine mount control system Are the parts OK? YES -Go to step 2 . NO -Repair or replace any leaking part(s), then go to step 4 .
  2. 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 1 minute.
  3. Monitor the OBD STATUS for DTC P2279 in the DTCs MENU with the HDS. Does the screen indicate FAILED? YES -Check the camshaft timing (see «TIMING BELT INSTALLATION»(/acura/tsx/ii-2008-2014/remont/mechanical/#cylinder-head-v6__timing-belt-installation) ), then go to step 4 . NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. If the screen indicates EXECUTING, keep idling until a result comes on. If the screen indicates OUT OF CONDITION, go to step 2 and recheck.
  4. Reset the PCM with the HDS.
  5. Do the PCM idle learn procedure (see «PCM IDLE LEARN PROCEDURE»(/acura/tsx/ii-2008-2014/remont/testing-diagnostics/#idle-control-system-v6__pcm-idle-learn-procedure) ).
  6. Check for Pending or Confirmed DTCs with the HDS. Is DTC P2279 indicated? YES -Check for vacuum leaks at the PCV valve, the PCV hose, the purge (PCS) line, the throttle body, the intake manifold, the brake booster, the brake booster hose, and the engine mount control system, then go to step 1 . NO -Go to step 7 .
  7. Monitor the OBD STATUS for DTC P2279 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 6 , go to the indicated DTC's troubleshooting. NO -If the screen indicates FAILED, go to step 1 . If the screen indicates EXECUTING or OUT OF CONDITION, keep idling until a result comes on.

Scheme 78

Scheme 78: PCV Valve Inspection
Scheme 78: PCV Valve Inspection

Scheme 79

Scheme 79
Scheme 79
  1. Check the PCV valve (A), the hoses (B), and the connections for leaks or restrictions.
  2. At idle, listen to the PCV valve (A) with a stethoscope as you lightly pinch the PCV hose (B) with your fingers or pliers several times. Each time the hose is pinched, the valve should click. If there is no clicking sound, check the PCV valve collar and O-rings for cracks or damage. If they are OK, replace the PCV valve and recheck.

Scheme 80

Scheme 80: PCV Valve Replacement
Scheme 80: PCV Valve Replacement
  1. Lift up the harness cover (A).
  2. Remove the bolt (B).
  3. Remove the PCV valve (C). NOTE: Do not to spill oil on the hot exhaust manifold.
  4. Install the parts in the reverse order of removal. NOTE: When installing a new PCV valve, make sure the O-rings (D) are in place. When installing a used PCV valve, use new O-rings.

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