CKP Pattern Clear/CKP Pattern Learn Acura MDX I

CKP Pattern Clear/CKP Pattern Learn

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.