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SECTION VIIC<br />
SERVICE PROGRAMMING SYSTEM<br />
Performing Off-Board Programming Adapter (OBPA) Pass-Thru SPS<br />
The OBPA is used in situations where a module must be programmed without having the vehicle present.<br />
This need may arise, for example, when a dealership parts department sells a control module to a retail or<br />
aftermarket customer. To perform SPS in this scenario requires an off-board programming adapter. The<br />
adapter allows the module to be powered up and <strong>com</strong>municate with the scan tool. The part number for the<br />
OBPA kit is J-41207-C. It is available for purchase by calling 1-800-GM-TOOLS (1-800-468-6657), or send<br />
your order by fax at 1-800-578-7375.<br />
NOTICE<br />
• Prior to performing SPS, make sure that the scan tool and the terminal are both equipped with the<br />
latest software.<br />
• To help avoid possible controller failure, make sure all cable connections are secure.<br />
Off-Board Pass-Thru Programming Procedure<br />
1. Connect the OBPA to the <strong>Tech</strong> 2 and the PC.<br />
2. Launch TIS. Click the Service Programming System icon on the TIS main screen (Figure VIIB-2).<br />
3. At the Select Diagnostic Tool and Programming Process screen (Figure VIIC-39), select Pass-Thru,<br />
Reprogram ECU, and Off-Board Programming Adapter as the ECU location. Select Next.<br />
Figure VIIC-39<br />
Select Diagnostic Tool and Programming Process screen with selections appropriate for OBPA pass-thru<br />
OBPA Pass-Thru SPS Procedure continued on next page...<br />
2005 <strong>Tech</strong> 2 <strong>User</strong>’s <strong>Guide</strong> VII - 59
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