Home ReviewsRefund
Home/Honda/Civic/Honda Civic VIII рестайлинг (2008-2011)/Repair manual/Testing & Diagnostics/Intake Air System (K20Z3 Engine): Other
Contents Section: Testing & Diagnostics All sections

Intake Air System (K20Z3 Engine): Other Honda Civic VIII рестайлинг

Testing & Diagnostics 2 illustrations ~378 words

Carbon Accumulation Check

Note. If the malfunction indicator lamp (MIL) has been reported on, check for diagnostic trouble codes (DTCs).

  1. Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
  2. Turn the ignition switch ON (II).
  3. Make sure the HDS communicates with the ECM and other vehicle systems. If it doesn't, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(ref-355119-S04276123312010012000000) ).
  4. 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.
  5. Check the REL TP SENSOR in the DATA LIST with the HDS. The reading should be below 2.46 deg. If it is not, clean the throttle body (see «THROTTLE BODY CLEANING»(ref-255502-S05877419632007060300000) ).

Throttle Position Learning Check

Note. If the malfunction indicator lamp (MIL) has been reported on, check for diagnostic trouble codes (DTCs).

Scheme 9

Scheme 9: Throttle Position Learning Check
Scheme 9: Throttle Position Learning Check
  1. Connect the HDS to the data link connector (DLC)
  2. Turn the ignition switch ON (II).
  3. Make sure the HDS communicates with the ECM and other vehicle systems. If it doesn't, go to the DLC circuit troubleshooting (see «DLC CIRCUIT TROUBLESHOOTING»(ref-355119-S04276123312010012000000) ).
  4. Select the INSPECTION MENU with the HDS.
  5. Do the TP POSITION CHECK in the ETCS TEST. If needed, clean the throttle body (see «THROTTLE BODY CLEANING»(ref-255502-S05877419632007060300000) ).

Throttle Body Cleaning

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.

Scheme 10

Scheme 10
Scheme 10
  1. Check for damage to the air cleaner. If the air cleaner is damaged, replace it (see «AIR CLEANER ELEMENT INSPECTION/REPLACEMENT»(ref-255502-S19957176052007060300000) ).
  2. Remove the throttle body (see «THROTTLE BODY REMOVAL/INSTALLATION»(ref-255502-S31582724102007060300000) ).
  3. Clean off the carbon from the throttle valve and inside the throttle body with a paper towel soaked in throttle plate and induction cleaner. NOTE: Remove the throttle body to clean it. Be careful not to pinch your fingers. To avoid removing the molybdenum coating, do not clean the bearing area of the throttle shaft (A). Do not spray throttle plate and induction cleaner directly on the throttle body. Use Honda genuine throttle plate and induction cleaner.
  4. Install the throttle body (see «THROTTLE BODY REMOVAL/INSTALLATION»(ref-255502-S31582724102007060300000) ).
  5. Reset the ECM with the HDS (see «HDS CLEAR COMMAND»(ref-379880-S15165751872010121600000) ).
  6. Turn the ignition switch ON (II), and wait for 2 seconds.
  7. Do the ECM idle learn procedure (see «ECM IDLE LEARN PROCEDURE»(ref-255526-S39475388272007060300000) ).

More articles — Intake Air System (K20Z3 Engine)