Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Dodge Pickup and 2004 Dodge Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Refer to VERIFICATION TESTS for appropriate verification test procedures.

NOTE: Check for any TSB's that may apply to this symptom.

Read and record the Freeze Frame Data. Use this information to help you duplicate the conditions that set the DTC. Pay particular attention to the DTC set conditions, such as, VSS, MAP, ECT, and Load.
Ignition on, engine not running.

With the DRBIII® in the miscellaneous menu, choose Clear PCM (battery disconnect) to reset the PCM.

With the DRBIII®, choose the Misfire Pretest screen.

Road test the vehicle and re-learn the adaptive numerator.

The adaptive numerator is learned when the Adaptive Numerator Done Learning line on the Misfire screen changes to Yes.

Did the adaptive numerator re-learn?
1. Yes --> Refer to the SYMPTOM: INTERMITTENT CONDITION Symptom (Diagnostic Procedure).
  Perform POWERTRAIN VERIFICATION TEST VER - 5 .
2. No --> Go To 2
Turn ignition off.
Visually inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals.

NOTE: Visually inspect the related wire harness. Look for any chafed, pierced, pinched, or partially broken wires.

NOTE: Make sure the Camshaft Position Sensor is tight.

NOTE: Refer to any technical service bulletins that may apply .

Were any problems found?
1. Yes --> Repair as necessary.
  Perform POWERTRAIN VERIFICATION TEST VER - 5 .
2. No --> Go To 3

NOTE: Visually inspect the Crankshaft Position Sensor and related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals.

NOTE: Visually inspect the related wire harness.

NOTE: Verify the Crank Position Sensor is properly installed.

Look for any chafed, pierced, pinched, or partially broken wires.
Were any problems found?
1. Yes --> Repair as necessary.
  Perform POWERTRAIN VERIFICATION TEST VER - 5 .
2. No --> Go To 4
Disconnect and remove the Crankshaft Position Sensor.
Inspect the tone wheel/flexplate slots for damage, foreign material, or excessive movement.

Is the tone wheel/flexplate free from defects?
1. Yes --> Go To 5
2. No --> Repair/replace tone wheel/flex plate as necessary.
  Perform POWERTRAIN VERIFICATION TEST VER - 5 .
With the DRBIII® lab scope probe and the Miller special tool #6801, back probe the (K24) CKP Signal circuit in the PCM harness connector.
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING..

Start the engine and observe the lab scope screen for any erratic CKP Sensor pulses.

Were any erratic Crank Position signals detected.
1. Yes.
  1. Replace the Crankshaft Position Sensor.
    Perform POWERTRAIN VERIFICATION TEST VER - 5 .
2. No.
  1. Go To 6
NOTE: Turn the ignition off before continuing.

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.
If there are no possible causes remaining, view repair.
1. Repair
  1. Replace and program the Powertrain Control Module per Service Information.
  2. Perform POWERTRAIN VERIFICATION TEST VER - 5 .