Home ReviewsRefund
Home/Honda/Civic/Honda Civic VIII рестайлинг (2008-2011)/Repair manual/Testing & Diagnostics/DTC P1684: Throttle Valve Return Spring Performance Problem
Contents Section: Testing & Diagnostics All sections

DTC P1684: Throttle Valve Return Spring Performance Problem Honda Civic VIII рестайлинг

Testing & Diagnostics 1 illustration ~299 words
CAUTIONDo not insert your fingers into the installed throttle body when you turn the ignition switch ON (II) or while the ignition switch is ON (II). If you do, you will seriously injure your fingers if the throttle valve is activated.

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

Scheme 172

Scheme 172
Scheme 172
  1. Turn the ignition switch ON (II).
  2. Clear the DTC with the HDS.
  3. Start the engine. Hold the engine speed at 3,000 rpm without load (in neutral) until the radiator fan comes on, then let it idle.
  4. Turn the ignition switch OFF, and wait 10 seconds.
  5. Turn the ignition switch ON (II).
  6. Check for Pending or Confirmed DTCs with the HDS. Is DTC P1684 indicated? YES - Go to step 7. NO - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the throttle body and the ECM.
  7. Turn the ignition switch OFF.
  8. Disconnect the air intake duct from the throttle body (see «THROTTLE BODY REMOVAL/INSTALLATION»(ref-255502-S31582724102007060300000) ).
  9. Push the throttle valve open as shown.
  10. Release the throttle valve. Does the throttle valve return? YES - Clean the throttle body (see «THROTTLE BODY CLEANING»(ref-255502-S05877419632007060300000) ), then go to step 12 and recheck. If DTC P1684 is indicated, go to step 11. NO - Go to step 11.
  11. Replace the throttle body (see «THROTTLE BODY REMOVAL/INSTALLATION»(ref-255502-S31582724102007060300000) ).
  12. Turn the ignition switch ON (II).
  13. Reset the ECM with the HDS.
  14. Do the ECM idle learn procedure (see «ECM IDLE LEARN PROCEDURE»(ref-255526-S39475388272007060300000) ).
  15. Turn the ignition switch OFF, and wait 10 seconds.
  16. Turn the ignition switch ON (II).
  17. Check for Pending or Confirmed DTCs with the HDS. Is DTC P1684 indicated? YES - Check for poor connections or loose terminals at the throttle body and the ECM, then go to step 1 . NO - Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTCs troubleshooting.

More articles — Electronic Throttle Control System (K20Z3 Engine)