Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSHONDA2011CIVIC DX, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMINTAKE AIR SYSTEM (R18A1 ENGINE)THROTTLE BODY TESTTHROTTLE POSITION LEARNING CHECK
2011 Honda Civic DX, 4D Sedan, Standard
Throttle Position Learning Check
2011 Honda Civic DX, 4D Sedan, StandardSECTION Throttle Position Learning Check
NOTE:
If the malfunction indicator lamp (MIL) has been reported on, check for diagnostic trouble codes (DTCs).
- Connect the HDS to the data link connector (DLC) (A) located under the driver's side of the dashboard.
- Turn the ignition switch ON (II).
- Make sure the HDS communicates with the ECM/PCM and other vehicle systems. If it doesn't, go to the DLC circuit troubleshooting (see DLC CIRCUIT TROUBLESHOOTING ).
- Select the INSPECTION MENU with the HDS.
- Do the TP POSITION CHECK in the ETCS TEST. If needed, clean the throttle body (see THROTTLE BODY CLEANING ).
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.