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Home >> Jeep >> 2023 >> Wagoneer Carbide, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 59 (6.4L - Intermittent Condition, Pcm Verification Test & Pre-Diagnostic Troubleshooting Procedure) >> Standard Procedure >> Pcm/ECM Reprogramming - Gas >> Pcm/TCM Flash Reprogramming

Pcm/TCM Flash Reprogramming

WARNING: This page is about a different car, the 2023 Jeep Grand Wagoneer. However, it is still accessible from the selected car via links, so may be relevant.

This procedure is required when one or more of the following situations are true:

  1. A Powertrain Control Module (PCM) has been replaced.
  2. Diagnostic Trouble Code (DTC) P1602 - PCM Not Programmed is set.
  3. An updated calibration or software release is available for either the PCM or TCM.

This procedure assumes that the wiTECH™ VCI Pod and StarMOBILE® devices are properly configured to the dealership network with either a wired or wireless connection. The wiTECH™ VCI Pod and StarMOBILE® must also be running the latest operating system and software release. For help on how to network the StarMOBILE®, reference the appropriate Quick Start Networking Guide available on 'DealerCONNECT > Service > StarSCAN® and StarMOBILE® Tools > Online Documentation' or at www.dcctools.com, under the Download Center. For help on how to network the wiTECH™ VCI Pod, use the "Help" tab at the top of the wiTECH™ Diagnostic Application.

ARTICLE LAYOUT 

  1. PORTION 1 - PCM/TCM FLASH PROCEDURE
  2. PORTION 2 - ADDITIONAL PCM/TCM REPLACEMENT PROCEDURES
  3. PORTION 3 - AUTHORIZED MODIFICATION LABEL
  4. REQUIRED TOOLS/EQUIPMENT
  5. TECH TIPS and INFORMATION
  6. PARTS REQUIRED

PORTION 1 - PCM/TCM FLASH PROCEDURE 

If using the wiTECH™ Diagnostic Application, go to REPAIR PROCEDURE - Using wiTECH™ Diagnostic Application below.

If using the StarMOBILE® Desktop Client, go to REPAIR PROCEDURE - Using StarMOBILE® Desktop Client below.

REPAIR PROCEDURE - USING WITECH™ DIAGNOSTIC APPLICATION 

NOTE:

If the vehicle is equipped with a Passive Entry Module (PEM), The PEM push button needs to be removed and key fob used to put the ignition switch in "RUN" position in order to complete flash process. Failure to do so will result in a "KEY not present" error on the Instrument Cluster screen while cycling ignition key OFF and ON in flash process.

  1. An overview of ECU flashing is available in the wiTECH™ Diagnostic Application. This overview may be found by first selecting the "Help" tab, then "Help Contents." This will open the wiTECH™ Help System. Selecting "Flashing an ECU" under the "Using the wiTECH™ Diagnostic Application" heading will display a step-by-step instructional guide to flashing an ECU. An instructional video can also be viewed by selecting "Flash ECU" under the "Videos" heading.
  2. Continue to PORTION 2 - ADDITIONAL PCM/TCM REPLACEMENT PROCEDURES to complete the process if the ECU has been replaced.
  3. Type the necessary information on the "Authorized Modification Label" (P/N 04275086AB) and attach near the VECI label (See PORTION 3 - AUTHORIZED MODIFICATION LABEL for details).

REPAIR PROCEDURE - USING STARMOBILE® DESKTOP CLIENT 

NOTE:

If this flash process is interrupted or aborted, the flash should be restarted.

  1. Open the hood of the vehicle and install a battery charger. Verify that the charging rate provides a continuous charge of 13.2 - 13.5 volts.
  2. Connect the StarMOBILE® to the vehicle data link connector located under the steering column and turn the ignition key to the "RUN" position.
    NOTE:

    If the vehicle is equipped with a Passive Entry Module (PEM), The PEM push button needs to be removed and key fob used to put the ignition switch in "RUN" position in order to complete flash process. Failure to do so will result in a "KEY not present" error on the Instrument Cluster screen while cycling ignition key OFF and ON in flash process.

  3. Power on the StarMOBILE®. Launch the StarMOBILE® Desktop Client and connect to the appropriate StarMOBILE® device.
  4. Retrieve the old ECU P/N. From the StarMOBILE® Home screen:
    1. Select "ECU View"
    2. Select "PCM"
    3. Select "More Options"
    4. Select "ECU Flash"
    5. Record the P/N at the top of the Flash PCM screen for later reference.
    6. Program the ECU. From the StarMOBILE® Home screen:
    7. Select "ECU View"
    8. Select "PCM"
    9. Select "More Options"
    10. Select "ECU Flash"
    11. Select "Browse for New File" and follow the on screen instructions.
    12. Highlight the appropriate calibration based on the P/N recorded in Step 4e, or by using Year/Model/Engine and appropriate emissions selection for the vehicle being worked on.
      NOTE:

      If the tool is not connected to the vehicle, flash files can be searched for by selecting the "Flash Download" button from the Home screen.

    13. Select "Download to Scantool"
    14. Once the download is complete, select "Close" and then "Back"
    15. Highlight the listed calibration, select "Update Controller" and follow the on screen instructions.
    16. When the PCM update is complete, select "OK"
    17. Verify that the P/N at the top of the Flash PCM screen has updated to the new part number.
    NOTE:

    If the flash process is interrupted or aborted, the flash should be restarted.

  5. Continue to PORTION 2 - ADDITIONAL PCM/TCM REPLACEMENT PROCEDURES to complete the process if the ECU has been replaced.
  6. Type the necessary information on the "Authorized Modification Label" (P/N 04275086AB) and attach near the VECI label (See PORTION 3 - AUTHORIZED MODIFICATION LABEL for details).

PORTION 2 - ADDITIONAL PCM/TCM REPLACEMENT PROCEDURES 

To continue, first determine the type of PCM/TCM in the vehicle, read and write down the required steps, and then proceed to the STEP-BY-STEP INSTRUCTIONS for additional information on completing the procedures. 

If an NGC3 or NGC4 PCM was replaced, perform the following additional steps and/or routines: 

  1. PCM Replaced (if equipped with WCM)
  2. Learn ETC (if equipped with ETC)
  3. Check PCM VIN (if NOT equipped with WCM)
  4. Check PCM Odometer
  5. Quicklearn (if equipped with EATX)

If a GPEC PCM was replaced, perform the following additional steps and/or routines: 

  1. If the vehicle is equipped with a CVT, verify that the TCM has the latest software calibration available.
  2. PCM Replaced (if equipped with WCM)
  3. Learn ETC
  4. Check PCM Odometer
  5. Check PCM VIN (if NOT equipped with WCM)
  6. TCM Quicklearn (if equipped with EATX)

If a CVT TCM was replaced, perform the following additional steps and/or routines: 

  1. Initialize CVT

If an EGS TCM was replaced, perform the following additional steps and/or routines: 

  1. Initialize EGS

Check PCM Odometer 

From the "Home" screen, select "ECU View".

Check PCM VIN 

From the "Home" screen, select "ECU View"

Initialize CVT 

From the "Home" screen, select "ECU View"

Initialize EGS 

From the "Home" screen, select "ECU View"

Learn ETC 

From the "Home" screen, select "ECU View"

PCM Replaced 

The vehicle PIN (Personal Identification Number) will be required to complete the routine. This information may be obtained in three ways:

  1. The original selling invoice
  2. DealerCONNECT > Parts > Key Codes
  3. Contacting the District Manager.

From the "Home" screen, select "ECU View"

Quicklearn 

From the "Home" screen, select "ECU View"

Update CVT TCM 

From the "Home" screen:

PORTION 3 - AUTHORIZED MODIFICATION LABEL 

NOTE:

The following step is required by law when reprogramming a PCM and/or TCM.

Type the necessary information on the "Authorized Modification Label" and attach near the VECI label.

GC0094476Courtesy of CHRYSLER GROUP, LLC

Authorized Modification Label

  1. Powertrain Control/Transmission Control Module Part Numbers (Insert P/Ns) Used
  2. Change Authority: TSB XX--XX
  3. Dealer Code: XXXXX
  4. Date: XX-XX-XX

REQUIRED TOOLS/EQUIPMENT: 

PART NUMBER StarMOBILE® PART NUMBER wiTECH™
NPN Battery Charger NPN Battery Charger
CH9801 StarMOBILE® Tool Kit NPN wiiTECH™ Tool Kit
CH9804 StarMOBILE® Vehicle Cable NPN TechCONNECT PC or equivalent
NPN TechCONNECT PC or equivalent    

TECH TIPS AND INFORMATION: 

PARTS REQUIRED 

Qty Part Number DESCRIPTION
1 04275086AB Label, Authorized Modification