Crankshaft Position Sensor: Testing and Inspection

CKP Pattern Clear/CKP Pattern Learn

NOTE: The ECT needs to be at 176 degree F (80 degree C) or higher.

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 for 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 A/T in 2 position, or M/T in 1st gear.

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 A/T in 2 position, or M/T in 1st gear.

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 for 30 seconds.

The CKP learning procedure is completed.