300, 300C & Magnum 2006-2008, Charger 2006-2008

Throttle Position Sensor

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Operation



The PCM supplies approximately 5 volts to the TPS. The TPS output voltage (input signal to the PCM) represents the throttle blade position. The PCM receives an input signal voltage from the TPS. This will vary in an approximate range of from .26 volts at minimum throttle opening (idle), to 4.49 volts at wide open throttle. Along with inputs from other sensors, the PCM uses the TPS input to determine current engine operating conditions. In response to engine operating conditions, the PCM will adjust fuel injector pulse width and ignition timing.

Removal & Installation



2.7L Engine
  1. Disconnect negative cable from battery
  2.  
  3. Disconnect the inlet hose from the throttle body.
  4.  
  5. Disconnect the electrical connectors.
  6.  
  7. Disconnect vacuum hose.
  8.  
  9. Remove the 3 throttle body bolts.
  10.  
  11. Remove the throttle body.
  12.  
  13. Remove the throttle body gasket.
  14.  
  15. Clean the mating surfaces.
  16.  

To install:


WARNING
Do not use spray (carb) cleaners on any part of the throttle body. Do not apply silicone lubricants to any part of the throttle body.

  1. Install new throttle body gasket.
  2.  
  3. Install the throttle body and bolts.
  4.  
  5. Tighten bolts to 105 inch lbs. (11.9 Nm).
  6.  
  7. Connect the electrical connectors.
  8.  
  9. Connect all vacuum hoses.
  10.  
  11. Install inlet hose and tighten clamp.
  12.  
  13. Connect negative cable to battery.
  14.  
  15. A Scan Tool may be used to learn electrical parameters. Go to the miscellaneous menu, and then select ETC relearn. If the relearn is not preformed, a Diagnostic Trouble Code (DTC) will be set. If necessary, use a scan tool to erase any Diagnostic Trouble Codes (DTC's) from PCM.
  16.  

3.5L Engines
  1. Disconnect negative cable from battery
  2.  
  3. Remove the inlet hose from throttle body.
  4.  
  5. Disconnect all electrical connectors.
  6.  
  7. Disconnect vacuum hose.
  8.  
  9. Remove the throttle body support bracket.
  10.  
  11. Remove the throttle body and bolts.
  12.  
  13. Remove the throttle body gasket.
  14.  
  15. Clean the mating surfaces.
  16.  

To install:


WARNING
Do not use spray (carb) cleaners on any part of the throttle body. Do not apply silicone lubricants to any part of the throttle body.

  1. Install new throttle body gasket.
  2.  
  3. Install throttle body and bolts.
  4.  
  5. Tighten bolts to 105 inch lbs. (11.9 Nm).
  6.  
  7. Install the throttle body support bracket to the bottom of the throttle body. Tighten the bolts to 20 ft. lbs. (27.1 Nm).
  8.  
  9. Install inlet hose and tighten clamp.
  10.  
  11. Connect negative cable to battery.
  12.  
  13. A Scan Tool may be used to learn electrical parameters. Go to the miscellaneous menu, and then select ETC relearn. If the relearn is not preformed, a Diagnostic Trouble Code (DTC) will be set. If necessary, use a scan tool to erase any Diagnostic Trouble Codes (DTC's) from PCM.
  14.  

5.7L Engine

WARNING
Do not use spray (carb) cleaners on any part of the throttle body. Do not apply silicone lubricants to any part of the throttle body.

  1. Remove the rubber air duct at front of throttle body.
  2.  
  3. Disconnect the electrical connector at throttle body.
  4.  
  5. Remove four throttle body mounting bolts .
  6.  
  7. Remove throttle body from intake manifold.
  8.  
  9. Remove the throttle body gasket.
  10.  

To install:

  1. Clean mating surfaces of throttle body and intake manifold.
  2.  
  3. Install new throttle body gasket.
  4.  
  5. Install throttle body to intake manifold by positioning throttle body to manifold alignment pins.
  6.  
  7. Install and tighten four mounting bolts. Refer to Torque Specifications
  8.  
  9. Install the electrical connector.
  10.  
  11. Install the rubber air hose to throttle body.
  12.  
  13. A Scan Tool may be used to learn electrical parameters. Go to the miscellaneous menu, and then select ETC relearn. If the relearn is not preformed, a Diagnostic Trouble Code (DTC) will be set. If necessary, use a scan tool to erase any Diagnostic Trouble Codes (DTC's) from PCM.
  14.  

Testing



2.7L, 3.5L & 5.7L Engines
  1. Scan for pending Throttle Position Sensor (TPS) codes, if codes are present turn off the ignition.
  2.  
  3. Disconnect the throttle body harness connector.
  4.  
  5. Turn the ignition switch on, engine off.
  6.  
  7. Measure the voltage of the (F855) 5 Volt Supply circuit in the Throttle Body harness connector pin (2).
  8.  
  9. If the voltage reading is not above 4.5 volts check and repair circuit (F855) for an open or high resistance problem.

    Click image to see an enlarged view

    Fig. Throttle Position Sensor (TPS) harness connector

  10.  

 
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