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Diagnostic Test

WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. 1)  ACTIVE DTC 

    Ignition on, engine not running.

    With a scan tool, read DTCs.

    Is the DTC active at this time? 

    Yes 

    1. Go To  2).

    No 

    1. Refer to INTERMITTENT CONDITION .
    2. Perform POWERTRAIN VERIFICATION TEST .
  2. 2)  CHECKING CAMSHAFT POSITION SENSOR SIGNAL WITH A LAB SCOPE 
    Fig 1: Checking Camshaft Position Sensor Signal Circuit
    GC0039784Courtesy of DAIMLERCHRYSLER CORP.

    Install Miller Special Tools #8815 and #8815-1 to perform diagnosis.

    Using a lab scope, probe the (K44) CMP Signal circuit in the appropriate terminal of special tool #8815.

    WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.

    Ignition on, engine not running.

    Observe the lab scope screen.

    Start the engine.

    Observe the lab scope screen.

    Are there any irregular or missing signals? 

    Yes 

    1. Go To  3).

    No 

    1. Go To  8).
  3. 3)  WIRE HARNESS INSPECTION 

    Turn the ignition off.

    Visually inspect the related wire harness including the ground circuit. Look for any chafed, pierced, pinched, or partially broken wires.

    Visually inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals.

    Make sure the Crankshaft Position Sensor and the Camshaft Position Sensor are properly installed and the mounting bolt(s) are torqued to the proper specification.

    Refer to any TSBs that may apply.

    Were any of the above conditions present? 

    Yes 

    1. Repair as necessary.
    2. Perform POWERTRAIN VERIFICATION TEST .

    No 

    1. Go To  4).
  4. 4)  (F856) 5-VOLT SUPPLY CIRCUIT OPEN OR SHORTED TO GROUND 
    Fig 2: Checking 5-Volt Supply Circuit Voltage
    GC0039841Courtesy of DAIMLERCHRYSLER CORP.

    Disconnect the CMP Sensor connector.

    Ignition on, engine not running.

    Measure the voltage on the (F856) 5-volt Supply circuit in the CMP harness connector.

    Is the voltage between 4.5 and 5.2 volts? 

    Yes 

    1. Go To  5).

    No 

    1. Repair the open or short to ground in the (F856) 5-volt Supply circuit. Use Miller special tool #8815 when checking for an open circuit to prevent PCM harness connector terminal damage.
    2. Perform POWERTRAIN VERIFICATION TEST .
  5. 5)  TONE WHEEL/PULSE RING INSPECTION 

    Turn the ignition off.

    Carefully disconnect the Battery Ground cable.

    Remove the Camshaft Position Sensor.

    Inspect the Tone Wheel/Pulse Ring for damage, foreign material, or excessive movement.

    Were any problems found? 

    Yes 

    1. Repair or replace the Tone Wheel/Pulse Ring as necessary.
    2. Perform POWERTRAIN VERIFICATION TEST .

    No 

    1. Go To  6).
  6. 6)  CHECKING CRANKSHAFT POSITION SENSOR SIGNAL WITH A LAB SCOPE 
    Fig 3: Checking Crankshaft Position Sensor Signal Circuit
    GC0014729Courtesy of DAIMLERCHRYSLER CORP.
    NOTE: An intermittent condition in the Crank Position Sensor can cause the P0344 to set.

    Install the CMP Sensor and connect the Battery cable.

    Install Miller Special Tools #8815 and #8815-1 to perform diagnosis.

    Using a lab scope, probe the (K24) CKP Signal circuit in the appropriate terminal of special tool #8815.

    WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.

    Ignition on, engine not running.

    Wiggle the related wire harness and lightly tap on the Crank Position Sensor.

    Observe the lab scope screen.

    Start the engine.

    Observe the lab scope screen.

    Are there any irregular or missing signals? 

    Yes 

    1. Replace the Crank Position Sensor.
    2. Perform POWERTRAIN VERIFICATION TEST .

    No 

    1. Go To  7).
  7. 7)  CAMSHAFT POSITION SENSOR 

    If there are no possible causes remaining, view repair. 

    Repair 

    1. Replace the Camshaft Position Sensor.
    2. Perform POWERTRAIN VERIFICATION TEST .
  8. 8)  (K44) CMP SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE 
    Fig 4: Checking Camshaft Position Sensor Signal Circuit
    GC0039842Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the CMP Sensor connector.

    Disconnect the PCM harness connectors.

    Ignition on, engine not running.

    Measure the voltage on the (K44) CMP Signal circuit.

    Wiggle the related wire harness while taking this measurement.

    Does the voltage ever increase above 5.2 volts? 

    Yes 

    1. Repair the short to battery voltage in the (K44) CMP Signal circuit.
    2. Perform POWERTRAIN VERIFICATION TEST .

    No 

    1. Go To  9).
  9. 9)  (K44) CMP SIGNAL CIRCUIT OPEN 
    Fig 5: Checking Camshaft Position Sensor Signal Circuit
    GC0039845Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis.

    Measure the resistance in the (K44) CMP Signal circuit from the CMP harness connector to the appropriate terminal of special tool #8815.

    Wiggle the related wire harness while taking this measurement.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Go To  10).

    No 

    1. Repair the excessive resistance in the (K44) CMP Signal circuit.
    2. Perform POWERTRAIN VERIFICATION TEST .
  10. 10)  (K44) CMP SIGNAL CIRCUIT SHORTED TO GROUND 
    Fig 6: Checking Camshaft Position Sensor Signal Circuit
    GC0039846Courtesy of DAIMLERCHRYSLER CORP.

    Measure the resistance between ground and the (K44) CMP Signal circuit in the CMP Sensor harness connector.

    Wiggle the related wire harness while monitoring the resistance value.

    Does the resistance ever go below 100 ohms? 

    Yes 

    1. Repair the short to ground in the (K44) CMP Signal circuit.
    2. Perform POWERTRAIN VERIFICATION TEST .

    No 

    1. Go To  11).
  11. 11)  (K44) CMP SIGNAL CIRCUIT SHORTED TO THE (F856) 5-VOLT SUPPLY CIRCUIT 
    Fig 7: Checking Camshaft Position Sensor Signal Circuit & 5-Volt Supply Circuit
    GC0039844Courtesy of DAIMLERCHRYSLER CORP.

    Measure the resistance between the (F856) 5-volt Supply circuit and the (K44) CMP Signal circuit in the CMP harness connector.

    Wiggle the related wire harness while taking this measurement.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Repair the short between the (F856) 5-volt Supply circuit and the (K44) CMP Signal circuit.
    2. Perform POWERTRAIN VERIFICATION TEST .

    No 

    1. Go To  12).
  12. 12)  PCM 
    NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

    Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits.

    Were there any problems found? 

    Yes 

    1. Repair as necessary.
    2. Perform POWERTRAIN VERIFICATION TEST .

    No 

    1. Replace and program the Powertrain Control Module per Service Information.
    2. Perform POWERTRAIN VERIFICATION TEST .
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