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.
CHECK FOR AN ACTIVE DTC
1. Turn the ignition off.
2. Turn the ignition on, engine not running.
3. With the scan tool, erase all DTCs.
4. Start the engine and allow it to idle.
5. With the scan tool, read DTCs and record on the repair order.
  Is the DTC active or pending?
  
  Yes
  - Go To 3
  No
  - Repair is complete.
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 Sensor 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 CKP 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 SENSOR, CRANKSHAFT POSITION, REMOVAL .
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
CRANKSHAFT POSITION SENSOR
If there are no possible causes remaining, view repair.

Repair
- Replace the Crankshaft Position Sensor in accordance with the Service Information. Refer to SENSOR, CRANKSHAFT POSITION, REMOVAL . 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 .