Ascender 2WD V8-5.3L (2004)
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Engine cooling fans, etc.
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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.
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All tool connections are secure:
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The RS-232 cable
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The connection at the DLC
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The voltage supply circuits
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The OBPA
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DO NOT disturb the tool harnesses while programming.
If an interruption occurs during the programming procedure, programming failure or control module damage may occur.
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If you are performing the pass-through programming procedure using a notebook computer without the power cord, ensure that the
internal battery is fully charged.
After Programming a Control Module
The powertrain may operate slightly different after a control module software/calibration update. Operating the powertrain through various driving
conditions allows the control module to re-learn certain values.
The control module must re-learn the following after a software/calibration update:
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Fuel trim correction
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Idle air control (IAC) learned position
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Automatic transmission shift adapts
Other learned values only re-learn by performing a service procedure.
If a control module is replaced the following service procedures may need to be performed:
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The crankshaft variation learn procedure
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The engine oil life reset procedure
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The idle learn procedure
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The inspection/maintenance complete system set procedure
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The vehicle theft deterrent password learn procedure
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The throttle position (TP) sensor learn procedure.
Remote Programming
Service Programming System (SPS) Remote Procedure
The Remote SPS method is a three-step process that involves the following procedures:
I.
Connecting the Tech 2 to the vehicle and obtaining the information from the module.
II.
Connecting the Tech 2 to the terminal and downloading a new calibration file from the terminal into the Tech 2 memory.
III. Reconnecting the Tech 2 to the vehicle and uploading the new calibration file into the module.
Performing the Remote Procedure
1. Connect the Tech 2 to the vehicle and obtain the module information using the following procedure:
Important:
Ensure the control module is installed in the vehicle and the battery is fully charged before programming.
A. Connect the Tech 2 to the vehicle data link connector (DLC), with the engine and the Tech 2 OFF.
B. Turn ON the Tech 2.
C. Press Enter at the title screen.
D. Turn ON the ignition, with the engine OFF.
E. Select Service Programming System at the Main Menu.
Important:
Select Request Info Again if a vehicle identification number (VIN) was previously stored in the Tech 2.
F. Select Request Info.
G. Enter the vehicle description by following the on-screen instructions.
H. Turn OFF all accessories and select Continue.
