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HOMESERVICE MANUALSHONDA2002CIVIC SIREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 67 (FUEL AND EMISSIONS SYSTEMS)GENERAL TROUBLESHOOTING INFORMATIONHOW TO USE THE HDS (HONDA DIAGNOSTIC SYSTEM)CKP PATTERN CLEAR/CKP PATTERN LEARN
2002 Honda Civic Si

CKP Pattern Clear/CKP Pattern Learn

2002 Honda Civic SiSECTION CKP Pattern Clear/CKP Pattern Learn
WARNING: This page is about a different car, the 2006 Acura MDX, 2005 Acura MDX, 2004 Acura MDX, and 2003 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • The ECT needs to be at 176°F (80°C) or higher.
  • Before doing this procedure, check "PULSER F/B LEARN" and "PULSER F/B LEARN (HIGH RPM)" in the DATA LIST with the HDS. If both values show N/A, this procedure is not needed. Go back to the troubleshooting or other procedures you were doing.
  • If only "PULSER F/B LEARN (HIGH RPM)" shows N/A, skip steps  4 through  9.
  1. Clear the CKP pattern while the engine is stopped.
  2. Turn the ignition switch OFF.
  3. Turn the ignition switch ON (II), and wait 30 seconds.
  4. Test-drive the vehicle on a level road: decelerate (with the throttle fully closed) from an engine speed of 2,500 rpm to 1,000 rpm with the transmission in 2 position.
  5. Stop the vehicle, but keep the engine running.
  6. Check PULSER F/B LEARN in the DATA LIST with the HDS. If it is NOT COMPLETED, go to step  4. If it is COMPLETED, go to step 7.
  7. Test-drive the vehicle on a level road: decelerate (with the throttle fully closed) from an engine speed of 5,000 rpm to 3,000 rpm with the transmission in 2 position.
  8. Stop the vehicle, but keep the engine running.
  9. Check the PULSER F/B LEARN (HIGH RPM) in the DATA LIST with the HDS. If it is NOT COMPLETED, go to step  7. If it is COMPLETED, go to step 10.
  10. Turn the ignition switch OFF.
  11. Turn the ignition switch ON (II), and wait 30 seconds. The CKP learning procedure is completed.
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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.