Diagnostic Test

PERFORM THE CAM/CRANK RELEARN PROCEDURE
NOTE:
The Cam/Crank Variation Relearn must be performed anytime there has been a repair/replacement made to a powertrain system, for example: flywheel, valvetrain, camshaft and/or crankshaft sensors or components.
1. Turn the ignition on.
2. With the scan tool select the "Cam/Crank Relearn" procedure under PCM Miscellaneous Menu Option and follow the on screen instructions.
  NOTE:
  If a negative response is displayed after the Cam/Crank Relearn procedure is performed, start the engine and perform the Cam/Crank Relearn procedure over until the misfire monitor is cleared.
  
  Did the PCM complete the Cam/Crank Relearn procedure?
  
  Yes
  - Go To 2
  No
  - Perform the process over until the Relearn procedure is completed.
READ AND RECORD DTCS AND ENVIRONMENTAL DATA - ERASE DTCS AND CHECK FOR THE DTC TO RETURN
1. With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
2. For future reference, with the scan tool, run and save a vehicle Scan Report and all related recorded data.
3. With the scan tool, erase all DTCs.
4. Turn the ignition off for a minimum of 10.0 seconds.
5. Turn the ignition on.
6. Using the When Monitored and Set Conditions above and recorded data, operate the vehicle in the conditions that set the DTC.
7. With the scan tool, read DTCs.
Did the DTC return?

Yes
- Go To 3
No
- Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
INSPECT THE WIRING HARNESS AND CONNECTORS FOR DAMAGE OR POOR FIT
1. Turn the ignition off.
2. Visually inspect the Crankshaft Position (CKP) Sensor wire harness. Look for any chafed, pierced, pinched, or partially broken wires.
3. Visually inspect the CKP wire harness connectors for broken, bent, pushed out, or corroded terminals.
4. Verify that there is good pin to terminal contact in the Crank Position Sensor and Powertrain Control Module connectors.
5. Ensure that the Crankshaft Position Sensor is properly installed and the mounting bolt(s) are torqued to the proper specification.
  Were any of the above conditions present?
  
  Yes
  - Repair as necessary
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 4
INSPECT THE TARGET WHEEL/FLEX PLATE FOR DAMAGE FOREIGN MATERIAL, OR EXCESSIVE MOVEMENT
1. Remove the Crankshaft Position Sensor. Refer to ENGINE SENSORS, REMOVAL AND INSTALLATION .
2. Inspect the Target Wheel/Flex Plate for damage, foreign material, or excessive movement.
  Were any problems found?
  
  Yes
  - Repair or replace the Target Wheel/Flex Plate as necessary. The "Cam/Crank Relearn" Procedure must be performed every time there has been a repair/replacement made to a CMP Sensor and/or CKP Sensor, Flywheel, Valvetrain, Timing Chain or gears. Failure to do so can cause a misfire fault to set. With the scan tool, perform the "Cam/Crank Relearn" Procedure.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 5
REPLACE THE CRANKSHAFT POSITION SENSOR
If there are no possible causes remaining, view repair.

Repair
- Replace the Crankshaft Position Sensor. Refer to ENGINE SENSORS, REMOVAL AND INSTALLATION . The "Cam/Crank Relearn" Procedure must be performed every time there has been a repair/replacement made to a CMP Sensor and/or CKP Sensor, Flywheel, Valvetrain, Timing Chain or gears. Failure to do so can cause a misfire fault to set. With the scan tool, perform the "Cam/Crank Relearn" Procedure.
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .