Throttle Position Sensor Learn Procedure

TP SENSOR LEARN PROCEDURE (WITHOUT TECH 1)
A "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 Throttle Position (TP) sensor.This is necessary because of manufacturing tolerances during minimum air adjustment, 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.

The "TP SENSOR LEARN" procedure should be performed when:

- The TP sensor is replaced.
- The throttle body is replaced.
- The PCM is replaced.
- Before the "IDLE LEARN" procedure.
- If"TP LEARN" is reset.

To perform "TP SENSOR LEARN":

1. Turn ignition to "ON" (engine not running).
2. Turn ignition to "OFF."
3. Wait a minimum of 20 seconds.
4. Turn ignition to "ON" (engine not running).
5. Turn ignition to "OFF."
6. Wait a minimum of 20 seconds.
7. Turn ignition to "ON" (engine not running).
8. Turn ignition to "OFF."
9. Wait a minimum of 20 seconds.

NOTE: Make sure nothing is touching or obstructing the accelerator or brake pedals during the "TP SENSOR LEARN" procedure because this will prevent the PCM from performing the learn routine.

TP SENSOR/IDLE LEARN PROCEDURE (WITH TECH 1)

NOTE: This procedure utilizes the capabilities of the Tech 1 scan tool. For the procedure to work properly, the vehicle transaxle must be in park or neutral and the coolant temperature must be at least 82.5°C (180.5°F).

1. Connect Tech 1 scan tool.
2. Select "ISC System," then select "TP Sensor/Idle Learn" in the "Misc. Test" mode.
3. Proceed with TP Sensor/Idle Learn as directed.