Fuel Injector Flow Rate Programming Remote

The fuel injector flow rate programming must be done when any of the following procedures are performed:

If the control module is being replaced, the fuel injector flow rate information must be retrieved before replacing the control module. If the control module does not communicate, a different procedure must be used to obtain the fuel injector flow rate information. Perform the appropriate retrieving fuel injector flow rate information procedure, and the fuel injector flow rate programming procedure.

Important: DO NOT program a control module unless you are directed by a service procedure or you are directed by a General Motors Corporation service bulletin. Programming a control module at any other time will not permanently correct a customers concern. If the control module is being replaced, the Speed Calibration must also be programmed.

Ensure the following conditions are met before programming a control module:

Important: Only perform this procedure if the control module is being replaced or any fuel injectors are being replaced. The current fuel injector flow rate values can be determined with the Tech 2®. If the control module does not communicate, see the next procedure.

1. Turn OFF the ignition.
2. Install the Tech 2® to the DLC.
3. Turn ON the ignition, with the engine OFF.
4. Turn OFF all vehicle accessories.
5. Select Diagnostics.
6. Select the appropriate vehicle applications.
7. Select Powertrain.
8. Identify the vehicle configuration as requested by the Tech 2®.
9. Select Special Functions.
10. Select Programming.
11. Select Injector Flow Rates.
12. Record the Fuel Injector Values shown on the Tech 2®.

Important: Only perform this procedure if the control module is being replaced and does not communicate. The current fuel injector flow rate can not be determined with the Tech 2®. The fuel injector numbers must be recorded from the fuel injector housings.

1. Remove the valve cover to gain access to the tops of the fuel injectors. Refer to Valve Rocker Arm Cover Replacement .
2. Clean any deposits off the tops of the fuel injectors.
3. Record all numbers on the fuel injectors.
4. Replace the valve cover and install all components. Refer to Valve Rocker Arm Cover Replacement .

1. Perform the applicable procedure to obtain the fuel injector flow rate values as stated above.
2. Contact the Techline® Customer Support Center.
3. Give the fuel injector information to the Techline® Customer Support Center (TCSC). Include new fuel injector information as applicable.
4. When the utility file is received from TCSC, download the file onto the Tech 2®.
5. Reprogram the fuel injector flow rates with the Tech 2®.
6. Retrieve the fuel injector flow rate values with the Tech 2®.
7. At this point, all entered information can be verified. Compare the flow rate values recorded with the flow rate values now on the Tech 2® for any fuel injectors that were not replaced.
8. If the information entered is correct the programming was successful.
9. Turn OFF the ignition and allow the control module to power down. This time should be at least 30 seconds. The Tech 2 may beep when the control module stops communicating.
10. Start the vehicle and test drive.

Fuel Injector Flow Rate Programming Pass Thru

The fuel injector flow rate programming must be done when any of the following procedures are performed:

If the control module is being replaced, the fuel injector flow rate information must be retrieved before replacing the control module. If the control module does not communicate, a different procedure must be used to obtain the fuel injector flow rate information. Perform the appropriate retrieving fuel injector flow rate information procedure, and the fuel injector flow rate programming procedure.

Important: DO NOT program a control module unless you are directed by a service procedure or you are directed by a General Motors Corporation service bulletin. Programming a control module at any other time will not permanently correct a customers concern. If the control module is being replaced, the Speed Calibration must also be programmed.

Ensure the following conditions are met before programming a control module:

1. Connect the ribbon cable between the scan tool and the TIS2000 terminal.

Important: Programming will not be allowed unless the Green Activator Hardware Lock is connected.

2. Make sure the Green Activator Hardware Lock is securely connected to the TIS2000 terminal printer port.
3. Connect the scan tool to the DLC then turn it ON.
4. Open TIS2000 from the ITCS Main Menu.
5. Click OK.
6. Click on Service Programming System.
7. Select the following options:

7.1.	Diagnostic Tool -- Pass Thru

7.2.	Programming Process -- Reprogram ECU

7.3.	ECU Location -- Vehicle

8. Click Next.
9. Identify the vehicle as requested by the system.
10. Click Next.
11. Turn ON the ignition, with the engine OFF.
12. Turn OFF all accessories.

Important: Do not connect a battery charger during engine control module (ECM) programming.

13. Click Next.

Important: A message stating "This could be a service ECU" will appear if there is no VIN stored in the ECM. Click OK if this message appears.

14. Enter the full 17-digit VIN if not correctly displayed.
15. Click Next.
16. Select Fuel Injector Flow Rate Programming.
17. Click Next.
18. Fuel Injector Flow Rate Programming only applies to vehicles built on or after 1/1/04. The RPO code for this is CTF. Choose With CTF, Interim Release.
19. Click Next.
20. Click Next.
21. Click Next.
22. Select 6 as the total number of vehicle cylinders.

Important: The injector number is the actual cylinder number.

23. Select the injectors to be replaced by checking the corresponding box.
24. Click Next.

Important: 

•	The characters can only be 0-9 or A-F.

•	The characters can also be pulled from the sticker on the cam cover or from the old ECM if the fuel injectors are not being replaced.

•	The cam cover sticker is missing positions 23-28 for each injector. These are all zeros. You need to add these zeros when entering in the characters.

25. Enter the digits by full row as they appear on the fuel injector, 8 characters per row starting from the top far left.

Important: TIS2000 will not allow an invalid fuel injector ID code to be input. However, any valid code can be used. Make sure that the correct ID code is entered for the correct cylinder injector or a driveability concern may result.

26. Click OK.
27. Turn OFF the ignition for 30 seconds.
28. Click Close.
29. Turn ON the ignition with the engine OFF.
30. Use the scan tool to verify the fuel injector flow rates were entered correctly in the ECM.
31. Go to Step 32 if the fuel injector flow rates are correct. If not, this entire process must be repeated.
32. The programming is complete.