Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

CHECK THE FUEL INJECTOR CORRECTION CODES IN THE PCM
1. Turn the ignition off.
2. Locate and record the correction code for the Fuel Injector (related to this DTC). The Injector correction codes are located on top of the Injectors.
3. Turn the ignition on, engine not running.
4. With the scan tool, read the Fuel Injector correction code stored in the PCM.
5. Compare Fuel Injector correction code with the code programmed in the scan tool.
  Is the Fuel Injector calibrated correctly?
  
  Yes
  - Go To 2
  No
  - Program the Fuel Injector correction code (related to this DTC) with the scan tool into the PCM. The Fuel Injector correction codes are located on top of the Injectors.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to 3.0L, POWERTRAIN VERIFICATION TEST .
CHECK FOR OTHER DTCS
1. Refer to the recorded DTCs.
  Are there any Fuel Injector DTCs active or pending?
  
  Yes
  - Perform the applicable diagnostic procedure(s). Refer to DTC INDEX (1 OF 2) and/or DTC INDEX (2 OF 2) .
  No
  - Go To 3
CHECK THE INTAKE SYSTEM FOR LEAKS OR RESTRICTIONS
1. Check the entire intake system for a leak or restriction.
  Were any INTAKE SYSTEM problems found?
  
  Yes
  - Repair as necessary in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to 3.0L, POWERTRAIN VERIFICATION TEST .
  No
  - Go To 4
CHECK THE FUEL DELIVERY SYSTEM
1. Perform the CHECKING THE FUEL DELIVERY SYSTEM diagnostic procedure. Refer to CHECKING THE FUEL DELIVERY SYSTEM .
  Were any FUEL DELIVERY problems found?
  
  Yes
  - Repair as necessary in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to 3.0L, POWERTRAIN VERIFICATION TEST .
  No
  - Go To 5
CHECK THE ENGINE MECHANICAL SYSTEM
1. Perform the CHECKING THE ENGINE MECHANICAL SYSTEM diagnostic procedure. Refer to CHECKING THE ENGINE MECHANICAL SYSTEMS .
  Were any ENGINE MECHANICAL problems found?
  
  Yes
  - Repair as necessary in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to 3.0L, POWERTRAIN VERIFICATION TEST .
  No
  - Go To 6
INSTALL A NEW FUEL INJECTOR AND CHECK FOR DTC TO RETURN
1. Turn the ignition off.
2. Replace the Fuel Injector (related to this DTC) in accordance with the Service Information. Program the correction code for this injector into the Powertrain Control Module.
  NOTE:
  The new Fuel Injector correction code is located on top of the injector.
3. Turn the ignition on.
4. With the scan tool, Erase DTCs.
5. Start the engine. Allow the engine to reach normal operating
6. Monitor the scan tool for at least two minutes.
7. With the scan tool, read DTCs.
  Did the DTC return as active?
  
  Yes
  - Go To 7
  No
  - Repair is complete.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to 3.0L, POWERTRAIN VERIFICATION TEST .
CHECK RELATED HARNESS CONNECTIONS
1. Disconnect all PCM harness connectors.
2. Disconnect all related in-line harness connections (if equipped).
3. Disconnect the related component harness connectors.
4. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Check for spread terminals and verify proper terminal tension.
  Repair any conditions that are found.
5. Connect all PCM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
6. Connect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
7. Connect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
8. With the scan tool, erase DTCs.
9. Test drive or operate the vehicle in accordance with the when monitored and set conditions.
10. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to 3.0L, POWERTRAIN VERIFICATION TEST .
  No
  - The wiring or poor connection problem has been repaired.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to 3.0L, POWERTRAIN VERIFICATION TEST .