Grand Cherokee 2WD V6-3.7L (2008)
Engine Control Module: Testing and Inspection
PCM/ECM Reprogramming
PCM/ECM REPROGRAMMING - GAS
MODULE REPROGRAMING
Replacement PCM's will require programming utilizing the StarSCAN(R) or equivalent. The PCM will not operate the engine until it is programmed. A
Diagnostic Trouble Code (DTC) will be set - "not programmed".
CAUTION: Extreme care must be taken when programming a calibration into a generic PCM. Do not randomly select a calibration. Once a
calibration is selected and programmed, the controller cannot be reprogrammed to a different calibration. The module can only be
reprogrammed to a more recent version of that calibration.
SPECIAL TOOLS/EQUIPMENT OR EQUIVALENT REQUIRED:
**REPAIR PROCEDURE - USING THE INTERNET TO RETRIEVE THE FLASH FILE:
NOTE: The StarSCAN(R) or equivalent diagnostic scan tool fully supports Internet connectivity. However, in order to take advantage of this
feature you must first configure the StarSCAN(R) or equivalent for your dealership's network. For instruction on setting up your
StarSCAN(R) or equivalent for the dealer's network; refer to the StarSCAN(R) or equivalent Quick Start Networking Guide available on
DealerCONNECT > Service > StarSCAN(R) or equivalent and StarMOBILE Tools >Online Documentation or at www.dcctools.com website
under the download center.
NOTE: If this flash process is interrupted/aborted, the flash should be restarted.
1. Open the hood, install a battery charger and verify that the charging rate provides approximately 13.5 volts. Set the battery charger timer to
maintain the charging voltage for the duration of the flash process.
2. Connect the CH9410 StarSCAN(R) or equivalent ethernet cable to the StarSCAN(R) or equivalent and the dealer's network drop.
3. Connect the CH9404 StarSCAN(R) or equivalent vehicle cable to the StarSCAN(R) or equivalent and the vehicle.
4. Power ON the StarSCAN(R) or equivalent.
5. Retrieve the old ECU part number. Using the StarSCAN(R) or equivalent at the "Home" screen:
a. Select "ECU View"
b. Touch the screen to highlight the PCM in the list of modules.
c. Select "More Options"
d. Select "ECU Flash"
e. Record the part number at the top of the "Flash PCM" screen for later reference.
6. Replace the PCM with the appropriate Generic PCM. Refer to the detailed service information available in TechCONNECT, under: Service Info,
8-Electrical, Electronic Control Module, Powertrain Control Module, Removal.
7. Program the PCM as follows:
a. Using the StarSCAN(R) or equivalent at the "Home" screen, Select "ECU View"
b. Touch the screen to highlight the PCM in the list of modules.
c. Select "More Options"
d. Select "ECU Flash"
e. Select "Browse for New File". Follow the on screen instructions.
f.
Highlight the appropriate calibration based on the part number recorded in Step 5.
g. Select "Download to Scantool".
h. Select "Close" after the download is complete, then select "Back".
i.
Highlight the listed calibration.
j.
Select "Update Controller". Follow on screen instructions.
k. When the update is complete, select "OK".
l.
Verify the part number at the top of the "Flash PCM" screen has updated to the new part number.
8. Is this a GPEC Module?
a. Yes >> go to STEP 9.