Service Programming System (SPS) - Pass-Thru Procedure

SERVICE PROGRAMMING SYSTEM (SPS)

BEFORE PROGRAMMING A CONTROL MODULE

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.

Ensure the following conditions are met before programming a control module:
- Vehicle system voltage
- There is no charging system concern. All charging system concerns must be repaired before programming a control module.
- Battery voltage is greater than 12 volts but less than 16 volts. The battery must be charged before programming the control module if the battery voltage is low.
- A battery charger is NOT connected to the vehicle's battery. Incorrect system voltage or voltage fluctuations from a battery charger, may cause programing failure or control module damage.
- Turn OFF or disable any system that may put a load on the vehicle's battery.
- Twilight sentinel
- Interior lights
- Daytime running lights (DRL)-Applying the parking brake, on most vehicles, disables the DRL system. Refer to the Owners manual.
- HVAC systems
- Cooling System fans etc.
- The ignition switch is in the proper position. The scan tool prompts you to turn ON the ignition, with the engine OFF. DO NOT change the position of the ignition switch during the programming procedure, unless instructed to do so.
- All tool connections are secure.
- RS-232
- The connection at the data link connector (DLC) is secure.
- Voltage supply circuits
- DO NOT disturb the tool harnesses while programming. If an interruption occurs during the programming procedure, programming failure or control module damage may occur.


PASS-THRU PROGRAMMING




Pass-Thru programming allows the scan tool to remain connected to the terminal and to the vehicle throughout the programming process. The vehicle must be in close proximity to the terminal while using Pass-Thru.

PERFORMING THE PASS-THRU PROCEDURE

1. IMPORTANT: The TIS supports service programming with the Tech 2 scan tool only.

Launch the TIS application at the terminal.
2. Select the Service Programming System.
3. Highlight the following information on the Select Diagnostic Tool and Programming Process screen:
- Select Diagnostic Tool-Select Pass-Thru
- Select Programming Process-Identify whether an existing module is being reprogrammed or a module is being replaced with a new one.
- Select ECU Location-Select vehicle
4. Select Next.
5. Complete all terminal-directed data on the Preparing for Communication/Determine Vehicle screen until Next is highlighted.
6. Select Next.

IMPORTANT: In order to reduce the potential for signal loss, the RS-232 cable should not be more than 25 feet long.

7. Follow the instructions on the Preparing for Communication screen.
8. Select Next.
9. Verify the VIN on the Validate Vehicle Identification Number screen.

IMPORTANT:
- The correct VIN must be entered if the vehicle identification number (VIN) does not appear correctly.
- If the vehicle is equipped with the original factory control module, no VIN will be stored.

10. Select Next.
11. If an option screen appears, verify the vehicle configuration and/or RPO information.

IMPORTANT:
- 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 the Techline Customer Support.
- The correct tire size and axle ratio must be highlighted and a valid VCI number entered if you select Reconfigure for your programming type.

1. Select Next.
2. Highlight the appropriate control module and programming type on the Supported Controllers screen.
3. Select Next.
4. Select the proper calibrations on the Calibration Selection screen.

IMPORTANT: Select Cancel if you receive a message stating that the calibration selected is already the current calibration in the control module and reprogramming with the same download is not allowed.

5. Ensure all the folder tabs have a green check mark.
6. Select Next.
7. Verify the current calibrations with the selected calibrations.
8. Select Next.
9. The Transfer Data screen will appear until the progress bar reaches 100 percent. This may take up to 30 minutes.
10. Complete all of the terminal-directed data on the Programming Complete screen.
11. Turn OFF the Tech 2.
12. Disconnect the Tech 2 from the vehicle.

PROGRAMMING VERIFICATION
1. Turn OFF the ignition for 30 seconds.
2. Attempt to start the engine.
3. Repeat the Service Programming procedure if the engine does not start or has an engine performance concern.
4. Inspect the connections of the following components:
- The Techline Terminal
- The scan tool
- The DLC
- The PCM
5. Reprogram the control module.