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Performing The Off Board Pass-Thru Procedure

  1. Launch the TIS application in the terminal.
  2. Select the SERVICE PROGRAMMING SYSTEM.
  3. Highlight the following information on the SELECT DIAGNOSTIC TOOL AND PROGRAMMING PROCESS Screen:
    1. Select Diagnostic Tool  - Select PASS-THRU.
    2. Select Programming Process  - Identify whether an existing module is being reprogrammed, or a module is being replaced with a new one.
    3. Select ECU location  - Select OFF-BOARD PROGRAMMING ADAPTER.
  4. Select NEXT.
    5. NOTE: To reduce the potential for signal loss, the RS-232 cable should NOT be more than 25 feet long.
  5. Complete all terminal-directed data at the PREPARING FOR COMMUNICATION/DETERMINE VEHICLE screen until NEXT is highlighted. See Figure.
  6. Select NEXT.
  7. Follow the on-screen instructions for connecting the following components:
    • The PCM.
    • The Off-Board Programming Adapter (OBPA). Refer to the TIS Users Guide for a listing of OBPA.
    • The Tech 2®.
  8. Select NEXT.
  9. Pass-Thru displays the VIN stored in the PCM. If a new PCM is being programmed, enter the correct VIN of the vehicle.
  10. Select NEXT.
  11. Select the appropriate options if the OPTIONS screen appears.
  12. Select NEXT.
    13. NOTE: When selecting the Vehicle Configuration Index (VCI) programming type, a valid VCI number for the vehicle must be entered. This number may be obtained from Techline® Customer Support.
  13. Select the type of programming to be performed from the following categories:
    1. Normal  - Used for updating an existing calibration or programming a new controller.
    2. Vehicle Configuration Index  - Used for updating an existing controller or programming a new controller for newer vehicles whose VINs are not yet in the database.
    3. Reconfigure  - Used to reconfigure a vehicle for changes in tire size and axle ratios.
  14. Select NEXT.
  15. Select a calibration selection on the Calibration Selection screen, if necessary.
  16. Ensure all the desired calibration folder tabs have a Green check mark.
  17. Select NEXT.
  18. Verify the current and selected calibration of the PCM on the Summary screen.
  19. Select NEXT.
    20. NOTE: Select CANCEL if you receive a message stating that the calibration selected is already the current calibration in the PCM and reprogramming with the same download is not allowed.
  20. Select OK.
    21. NOTE: On model year 1996 and newer controllers, a Crankshaft Position (CKP) relearn procedure box may appear. See CKP SYSTEM VARIATION LEARN PROCEDURE .
  21. Select OK.
  22. When programming is complete, a PROGRAM CONTROLLER/PROGRAMMING COMPLETE screen appears. Follow the on-screen instructions, if any.
  23. Select CLOSE.
  24. Turn OFF the OBPA.
  25. Turn OFF the scan tool.
    26. NOTE: Wait 30 seconds after the OBPA is shut OFF before disconnecting the PCM.
  26. Disconnect the OBPA from the Tech 2® and the PCM.
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