Avenger 2008

Crankshaft Position Sensor

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Operation



Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009

The Crankshaft Position (CKP) Sensor is a permanent magnet output coil device that monitors the speed and position of the crankshaft. A reluctor is attached directly to the crankshaft, and is used to generate a constant signal as it passes the CKP sensor magnetic coil. The CKP Sensor utilizes system voltage (12 volts DC), or reference voltage (5 volts DC) to generate a digital output signal to the PCM that is based upon a 0.5 volt AC reference. The alternating magnetic field is used by the sensor output electronics to produce a digital pulse. The CKP sensor returns a digital ON/OFF signal pulse during each revolution of the crankshaft, with a momentary signal interrupt for the top dead center (TDC) position of the #1 cylinder. The Pulse Width Modulation pattern is used by the Powertrain Control Module (PCM) to calculate ignition timing, fuel injector timing, misfire diagnostics, and the tachometer display.

Removal & Installation



2.4L Engine

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009

  1. Disconnect the negative battery cable.
  2.  
  3. Raise vehicle and support.
  4.  
  5. Remove heat shield retaining bolt.
  6.  
  7. Remove heat shield.
  8.  
  9. Unlock and disconnect the electrical connector to the CKP sensor.

    Click image to see an enlarged view

    Fig. Unlock and disconnect the electrical connector to the CKP sensor

  10.  
  11. Remove the CKP sensor bolt.

    Click image to see an enlarged view

    Fig. Remove the CKP sensor bolt

  12.  
  13. Remove the sensor.
  14.  

To install:

  1. Check O-ring for damage and lubricate the O-ring with engine oil before installing sensor.
  2.  
  3. Use a twisting motion when installing the sensor.
  4.  
  5. Install and tighten the CKP sensor bolt and tighten to 79.5 inch lbs. (9 Nm).
  6.  
  7. Connect and lock the electrical connector to the CKP sensor.
  8.  
  9. Install heat shield and retaining bolt.
  10.  
  11. Lower vehicle.
  12.  
  13. Connect the negative battery cable.
  14.  

2.7L Engine

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009


NOTE
If the CKP sensor is difficult to remove twist side to side during removal.

  1. Disconnect and isolate negative battery cable.
  2.  
  3. Disconnect electrical connector (1) from Crankshaft Position (CKP) sensor (3).

    Click image to see an enlarged view

    Fig. Disconnect electrical connector (1) from Crankshaft Position (CKP) sensor (3)

  4.  
  5. Remove bolt (2) and remove CKP sensor (3) from transmission housing.
  6.  

To install:


NOTE
If reinstalling the sensor, check O-ring on the sensor for damage, replace if necessary. Lubricate the O-ring with clean engine oil before installing sensor.

  1. Install Crankshaft Position (CKP) sensor into the transmission housing.
  2.  
  3. Install bolt to CKP sensor and tighten the bolt to 79.5 inch lbs. (9 Nm).
  4.  
  5. Connect electrical connector to CKP sensor.
  6.  
  7. Connect negative battery cable.
  8.  

3.5L Engine

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009

  1. Disconnect and isolate negative battery cable.
  2.  
  3. Unlock and disconnect electrical connector from CKP sensor.

    Click image to see an enlarged view

    Fig. Unlock and disconnect electrical connector from CKP sensor

  4.  
  5. Remove sensor mounting screw.
  6.  
  7. Remove sensor.
  8.  

To install:

  1. Install sensor and push sensor down until contact is made with the transmission case. While holding the sensor in this position, install and tighten the retaining bolt to 105 inch lbs. (12 Nm).
  2.  
  3. Connect electrical connector and lock to CKP sensor.
  4.  
  5. Connect negative battery cable.
  6.  

Testing



Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009


NOTE
Refer to the Electrical Wiring Diagram for component and connector locations, connector views, and circuit-specific information.

CKP Circuit Testing

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009

Use a suitable scan tool or a Graphing Multi-Meter (GMM in order to view the CKP data.  

CKP Sensor logic is based on alternating lines of magnetic flux which generate a digital ON/OFF signal to the PCM, and are based on the speed and position of the crankshaft.

Verify that the engine timing components (timing belt, timing chain, or timing gears) are properly installed, and that there is no foreign material obstructing the path between the reluctor and the CKP sensor. If any engine mechanical faults are evident, locate and repair as required before continuing.  

A Digital Volt-Ohm Meter (DVOM) may be used to verify the condition of the wiring: additional information may be acquired by taking measurements at the sensor connector as well as the PCM connector. If significant resistance is measured (greater than 5 ohms), check the wiring harness and connections for corrosion, poor pin connections, or damaged wires.

If all engine wiring and pin connections are confirmed, disconnect the CKP Sensor to verify the signal with a GMM, and verify PCM communication before replacing the CKP Sensor.

Click image to see an enlarged view

Fig. CKP Sensor Range Chart

CKP Sensor Strategy

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009

The CKP Sensor provides a digital input signal to the Powertrain Control Module (PCM) for a number of engine control system calculations. The CKP signal is compared with the Camshaft Position Sensor (CMP) and Vehicle Speed Sensor (VSS) for measured operating conditions, and the Pulse Width Modulation pattern is used by the Powertrain Control Module (PCM) to calculate ignition timing, fuel injector timing, misfire diagnostics, and the tachometer display.

Connection & Wiring Diagnosis

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009

Refer to the Electrical Wiring Diagram for component and connector locations, connector views, and circuit-specific information.  

Many intermittent open or short circuits may be caused by wiring harness and connector movement due to vibration, engine torque, bumps and rough pavement, etc.

  1. Test the wiring harness and connectors by performing the following tests:

    Move the related connectors and wiring while monitoring the appropriate scan tool data.  
     
    Move the related connectors and wiring with the component commanded ON and OFF. Using a suitable the scan tool, observe the component operation.
     
    With the engine running, move the related connectors and wiring while monitoring component operation.
     
    If harness or connector movement affects the data displayed, the component and system operation, or the engine operation, inspect and repair the harness or connections as necessary.
     

  2.  
  3. Test the connector terminal pins and/or wiring by performing the following tests:

    Inspect for incorrect mating of the connector halves, or terminals not fully seated in the connector body.  
     
    Inspect for improperly formed or damaged terminals and test for incorrect terminal tension.  
     
    Inspect for poor terminal to wire connections including terminals crimped over insulation. This requires removing the terminal from the connector body.  
     
    Inspect for corrosion or water intrusion. Pierced or damaged insulation can allow moisture to enter the wiring. The conductor can corrode inside the insulation with little visible evidence. Look for swollen and/or brittle sections of wire in the suspect circuits.  
     
    Inspect for wires that are broken inside the insulation by gently pulling on suspect sections of wiring.
     

  4.  

Related Diagnostic Trouble Codes

Specific to:

Chrysler Sebring 2008-2009

Dodge Avenger 2008-2009



Click image to see an enlarged view

Fig. Related Diagnostic Trouble Codes

 
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