Throttle Position Sensor Calibration (Chrysler)

Introduction

The COMPUSHIFT Mini needs an accurate throttle position sensor signal in order to operate properly.  

Calibration Procedure

Put SAFETY FIRST. You should not attempt the throttle sensor calibration unless you are thoroughly familiar with working around engines.

Begin by starting the vehicle in park. Let the engine run long enough for it to come off the the fast idle or choke setting. This ensures that at idle the throttle is in the fully closed position.

Turn the engine off, but then turn the ignition switch back on so that the engine is ready to start, but not running.

Using the arrow keys, navigate to the throttle position sensor calibration screen on the COMPUSHIFT Mini as shown:

TPS CAL 

Press the "select" key. The display shows the current calibration status. This will read out as either:

CAL BAD 

or 

CAL GOOD

depending on whether or not you have successfully calibrated the sensor before.

Press the "up" key on the COMPUSHIFT Mini to start the calibration process.  

 Press the accelerator pedal completely to the floor and release it.  You have five seconds to do this.

During the calibration process, a 5-second timer counts down and shows on screen.

    5.00

    4.00

    3.00

    2.00

    1.00

When the time finishes, the screen should show:

CAL GOOD

Without pressing the "select" button, move the accelerator pedal though its range of motion slowly.

If the calibration has been performed properly, "CAL GOOD" should remain on the screen.

If not, and "CAL BAD" shows up, you will need to carefully repeat the calibration process.

Once the throttle position sensor has been successfully calibrated, you should be ready to drive.