Idle Learn Procedure

Throttle Body And Coolant Pipes:

Throttle Position Sensor Learn
A Throttle Position (TP) Sensor Learn routine has been implemented in the PCM software to allow the PCM to correct or offset the closed throttle signal value of the TP sensor. This is necessary because of manufacturing tolerances during assembly of throttle body, TP sensor manufacture and because the TP sensor is not adjustable on the throttle body. If an improper TP sensor offset is maintained by the PCM, a high idle at closed throttle or stall condition may occur. Performing the TP Sensor Learn procedure lets the PCM learn the correct TP sensor offset.

Notice: Make sure nothing is touching or obstructing the accelerator during the TP Sensor Learn procedure because this will prevent the PCM from performing the learn routine. Also ensure that the cruise cable is not holding the throttle open.

The TP sensor learn procedure should be performed when:
^ The TP sensor is replaced.

^ The throttle body is replaced.

^ The PCM is replaced.

Procedure
To perform the TP Sensor Learn:
1. Turn the ignition switch to the ON position, with the engine not running.
2. Wait for 30 seconds.
3. Turn the ignition switch to the Lock position.
4. Wait for 30 seconds.