CKP Pattern Clear/CKP Pattern Learn Procedure: Procedure

How to use this Service Information .

NOTE:

Clearing the DTCs with the HDS does not require you to do this procedure.
The PCM memorizes the learning status after an hour from turning the vehicle to the OFF (LOCK) mode. If you need to disconnect the 12 volt battery terminals before the PCM memorizes the learning status, jump the SCS line with the HDS, and wait 60 seconds, then disconnect the 12 volt battery terminals.

CKP Pattern - Clear/Learn (With HDS)
■ Preconditions
- HDS Connected
■ Procedure

1. Clear the CKP pattern learned value.
- Select the following menu buttons on the HDS screen in sequence.
  - PGM-FI (System Selection Menu)
  - Adjustment
  - CRANK (CKP) PATTERN
  - CRANK (CKP) PATTERN CLEAR
2. Learn the CKP pattern.
- Select the following menu buttons on the HDS screen in sequence.
  - PGM-FI (System Selection Menu)
  - Adjustment
  - CRANK (CKP) PATTERN
  - CRANK (CKP) PATTERN LEARNING
3. Turn the vehicle to the OFF (LOCK) mode.

4. Jump the SCS line with the HDS.

5. Wait 60 seconds, and exit the SCS mode with the HDS.
CKP Pattern - Learn (Without HDS)
Procedure

1. Start the engine. Hold the engine speed at 3, 000 rpm without load (in P or N) until the radiator fan comes on.

2. Test-drive the vehicle on a level road: Decelerate (with the throttle fully closed) from an engine speed of 3, 750 rpm down to 2, 000 rpm with the transmission in D position/mode.

3. Repeat step 2 several times.

4. Turn the vehicle to the OFF (LOCK) mode.

5. Turn the vehicle to the ON mode, and wait 30 seconds.

6. Turn the vehicle to the OFF (LOCK) mode, and wait an hour. The CKP pattern learn procedure is complete.