Avenger, Sebring Coupe, Stratus Coupe, 1999-2006

Throttle Position Sensor

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Adjustment



Not for Dodge Stratus Sedan



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Fig.

  1. Disconnect the throttle position sensor connector, and connector the special tool MB991348 in between. (All terminals should be connected.)
  2.  
  3. Connect a digital voltmeter between throttle position sensor terminal 3 (sensor output) and terminal 1 (sensor ground).
  4.  
  5. Turn the ignition switch to the ON position (but do not start the engine).
  6.  
  7. Check the throttle position sensor output voltage. Standard value output voltage is 535-735 mV.
  8.  
  9. If not within the standard value range, adjust by loosening throttle position sensor mounting bolts and turning the throttle position sensor body. After adjusting, tighten the bolts securely. Turn the ignition switch to the LOCK (OFF) position.

    Click image to see an enlarged view

    Fig.

  10.  

Not for Dodge Stratus Sedan



Click image to see an enlarged view

Fig.



Click image to see an enlarged view

Fig.

  1. Disconnect the throttle position sensor connector, and connector the special tool MB991348 in between. (All terminals should be connected.)
  2.  
  3. Connect a digital voltmeter between throttle position sensor terminal 3 (sensor output) and terminal 1 (sensor ground).
  4.  
  5. Turn the ignition switch to the ON position (but do not start the engine).
  6.  
  7. Check the throttle position sensor output voltage. Standard value output voltage is 535-735 mV.
  8.  
  9. If not within the standard value range, adjust by loosening throttle position sensor mounting bolts and turning the throttle position sensor body. After adjusting, tighten the bolts securely. Turn the ignition switch to the LOCK (OFF) position.

    Click image to see an enlarged view

    Fig.

  10.  



Click image to see an enlarged view

Fig.

Operation



The Throttle Position Sensor (TPS) signal represents the throttle blade position. As the position of the throttle blade changes, the resistance of the TPS changes. The Powertrain Control Module (PCM) supplies approximately 5 volts to the TPS. The TPS output voltage (input signal to the PCM) represents the throttle blade position. The TPS output voltage to the PCM varies from approximately 0.6 volt at minimum throttle opening (idle), to a maximum of 4.5 volts at Wide Open Throttle (WOT).

Along with inputs from other sensors, the PCM uses the TPS input to determine the current engine operating conditions. The PCM also adjusts the fuel injector pulse width and the ignition timing based on these inputs.

Removal & Installation



2.7L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove the negative battery cable.
  4.  
  5. Remove the throttle body.
  6.  
  7. Remove the Throttle Position Sensor (TPS) mounting screws.
  8.  
  9. Remove the TPS.
  10.  

To install:

  1. The throttle shaft end of the throttle body slides into a socket in the TPS. The socket has two tabs inside it. The throttle shaft rests against the tabs. When indexed correctly, the TPS can rotate clockwise a few degrees to line up the mounting screw holes with the screw holes in the throttle body. The TPS has slight tension when rotated into position. If it is difficult to rotate the TPS into position, install the sensor with the throttle shaft on the other side of the tabs in the socket.
  2.  
  3. Tighten the TPS mounting screws to 44 inch lbs. (5 Nm) torque.
  4.  
  5. After installing the TPS, the throttle plate should be closed. If the throttle plate is open, install the sensor on the other side of the tabs in the socket.
  6.  
  7. Install the throttle body.
  8.  
  9. Connect the negative battery cable.
  10.  

Testing



  1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the Throttle Body and the Powertrain Control Module (PCM).
  2.  
  3. Look for any chafed, pierced, pinched, or partially broken wires.
  4.  
  5. Look for broken, bent, pushed out or corroded terminals.
  6.  
  7. Inspect the Throttle Body for any condition that would result in an incorrect signal, such as damage or contamination.
  8.  
  9. Inspect and clean all PCM, engine, and chassis grounds that are related to the most current DTC.
  10.  
  11. If numerous trouble codes were set, use a wire schematic and look for any common ground or supply circuits.
  12.  
  13. For any Relay DTC-s, actuate the Relay with the scan tool and wiggle the related wire harness to try to interrupt the actuation.
  14.  
  15. Use the scan tool to perform a System Test if one applies to failing component. A co-pilot, data recorder, and/or lab scope should be used to help diagnose intermittent conditions.
  16.  

Testing Using A DVOM
  1. Disconnect the throttle position sensor connector.
  2.  
  3. Measure resistance between the throttle position sensor side connector terminal 1 and terminal 4. Standard value: 3.5 - 6.5 k/Ohms.
  4.  
  5. Measure resistance between the throttle position sensor side connector terminal 1 and terminal 3.
  6.  
  7. If resistance is outside the standard value, or if it doesnt change smoothly, replace the throttle position sensor.
  8.  
  9. Manually check operation by opening throttle valve slowly until it is fully open. Changes in ohm readings should be smooth, corresponding to movement of throttle valve.
    NOTE
    After replacement, the throttle position sensor should be adjusted.



    Click image to see an enlarged view

    Fig.



    Click image to see an enlarged view

    Fig.



    Click image to see an enlarged view

    Fig.

  10.  

  1. Disconnect the throttle position sensor connector.
  2.  
  3. Measure resistance between the throttle position sensor side connector terminal 1 and terminal 4. Standard value: 3.5-6.5 k/Ohms.
  4.  
  5. Measure resistance between the throttle position sensor side connector terminal 1 and terminal 3.
  6.  
  7. If resistance is outside the standard value, or if it doesnt change smoothly, replace the throttle position sensor.
  8.  
  9. Manually check operation by opening throttle valve slowly until it is fully open. Changes in ohm readings should be smooth, corresponding to movement of throttle valve.
    NOTE
    After replacement, the throttle position sensor should be adjusted.



    Click image to see an enlarged view

    Fig.



    Click image to see an enlarged view

    Fig.



    Click image to see an enlarged view

    Fig.

  10.  

Testing Using Oscilloscope
  1. Disconnect the throttle position sensor connector and connect the test harness special tool (MB991348) in between. (All terminals should be connected.)
  2.  
  3. Connect the oscilloscope probe to the throttle position sensor side connector terminal 3.
  4.  
  5. Turn the ignition switch ON position. Slowly move the throttle lever from the idle position to the full-throttle position and check then if the waveform is free from any noise.
  6.  
  7. If any noise is recognized, replace the throttle position sensor.
    NOTE
    After replacement, the throttle position sensor should be adjusted.

  8.  

  1. Disconnect the throttle position sensor connector and connect the test harness special tool (MB991348) in between. (All terminals should be connected.)
  2.  
  3. Connect the oscilloscope probe to the throttle position sensor side connector terminal 3.
  4.  
  5. Turn the ignition switch ON position. Slowly move the throttle lever from the idle position to the full-throttle position and check then if the waveform is free from any noise.
  6.  
  7. If any noise is recognized, replace the throttle position sensor.
    NOTE
    After replacement, the throttle position sensor should be adjusted.

  8.  

 
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