Crankshaft Position Sensor: Testing and Inspection

TEC (Tooth Error Correction) Learn Procedure

When an ECM is reflashed, initialized or replaced, and drive plate of fly wheel has been replaced, follow these procedures to relearn the crankshaft position (CKP) system variation:

WARNING: To avoid personal injury when performing the TEC learn procedure, always set the vehicle parking brake and block the drive wheels. Release the throttle immediately when the engine starts to decelerate. Once the learning procedure is completed, engine control will be learned to the operator, and the engine will respond to throttle position.

1. Stay the gear parking or neutral.
2. Install the scan tool and select "TEC (Tooth Error Correction) LEARN" menu.
3. Start the engine with A/C off.
4. Keep the engine coolant temperature above 65 °C (149 °F).
5. Put the acceleration pedal above 4000 RPM until the fuel cut-off occurs.
6. Wait 10 - 15 seconds.
7. Fulfill this procedure again if the scan tool does not display "OK" message.
8. Turn the ignition switch OFF.
9. Turn the ignition switch ON and then clear the DTC code.