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Home >> Jeep >> 2009 >> Commander Limited, 4.7 P, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Transmission Control Module (TCM) - Electrical Diagnostics) >> Standard Procedure >> Nag1 Transmission Verification Test >> Notes

Nag1 Transmission Verification Test: Notes

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

To validate that the repair(s) fixed the vehicle, perform the following steps.

  1. Reconnect any disconnected components.
  2. Connect the scan tool to the Data Link Connector.
  3. With the scan tool, erase ABS DTCs.
  4. With the scan tool, erase PCM DTCs.
  5. With the scan tool, erase TCM DTCs.
    CAUTION: Apply the parking brake.
    NOTE: The Transmission Temperature can only be read while in Reverse or Drive.
  6. With the scan tool, display the Transmission temperature. Start and run the engine until the Transmission temperature is above 43° C (110° F).
  7. If internal transmission components were repaired or replaced check the Transmission fluid and adjust if necessary. Refer to the appropriate Service Information for the proper Fluid Fill procedure. Refer to Transmission and Transfer Case/Automatic - NAG1/FLUID and FILTER - Standard Procedure
  8. If the TCM (EGS) is flashed or replaced, with the scan tool, perform an EGS initialization to relearn variant coding.
  9. If internal transmission repairs are performed or replacement of the Transmission Control Module, perform a TCM ADAPTATION procedure. Refer to Electrical - Electronic Control Modules/Electronic Control Modules/MODULE, Transmission Control - Standard Procedure
  10. After performing the above procedures, perform the Road Test Procedure. 
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