Harness Overview
The Haltech GM LS2 / LS3 DBW Terminated Engine Harness is a plug and play
solution for wiring a General Motors LS2 or LS3, Drive By Wire Engine.
Installation is simple and easy as the harness is designed for the engine, all lengths
are correct and all wires are clearly labeled.
Notes on Installation:
• Make sure your Engine is grounded directly to the chassis of the vehicle.A heavy
gauge ground strap should be used to ground your engine to the chassis of the
vehicle. The Haltech Terminated Engine harness does not ground your engine.
WARNING!
Damage can occur to your harness and / or ECU if you do not ground your
engine properly. Please ensure heavy gauge cable is used.
• Keep all wires away from the exhaust manifold and extreme sources of heat.
• The harness is designed to plug directly into the OEM ignition loom and therefore
no ignition loom is supplied.
Initilal Setup
When installation is complete it is now time to upload the basemap to your ECU.
Connect to the ECU using the Haltech Elite Software Programmer (ESP). When
connected navigate through the software to File>Upload Map>Base Maps and select
the basemap that suits your application. ESP will now upload the selected basemap to
your ECU. When upload is complete it is now time to check and setup any non OEM
performance parts and accessories (ie. injector size, boost control, etc.) that your
engine may require.
At this time it is important to calibrate your throttle position sensor. To do this
please go to the Throttle Position Sensor function in the setup page and follow the
prompts to calibrate the throttle. Once complete you are now able to start your engine
and proceed to check timing and tune.
Please refer to the help file located within the ESP software for more information on
setup and tuning.
Figure 8 - Throttle Position Sensor Calibration
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