Malibu V6-3.1L VIN J (2002)
Engine Control Module: Service and Repair
Powertrain Control Module Programming and Setup
Before Programming a Control Module
IMPORTANT:
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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 customer's concern.
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The Off-Board Programming is used in situations where a control module must be programmed without having the vehicle present. The Off-Board
Programming Adapter must be used to perform the Off-Board Programming procedure. The adapter allows the control module to power up and
allows the Tech 2 to communicate with the control module.
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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.
Ensure that all connections are secure at the following locations:
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The Off-Board Programming Adapter
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The Tech 2
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The control module
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The Techline terminal
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
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Vehicle system voltage
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There is not a charging system concern. All charging system concerns must be repaired before programming a control module.
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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.
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A battery charger is NOT connected to the vehicle's battery. Incorrect system voltage or voltage fluctuations from a battery charger, may cause
programming failure or control module damage.
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Turn OFF or disable any system that may put a load on the vehicle's battery, such as the following components:
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Twilight sentinel
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Interior lights
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Daytime running lights (DRL)-Applying the parking brake, on most vehicles, disables the DRL system. Refer to the Owners manual.
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Heating, ventilation, and air conditioning (HVAC) systems
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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, including the following components and circuits:
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The RS-232
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The connection at the data link connector (DLC)
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The voltage supply circuits
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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.
Remote Programming
1. Turn OFF the ignition.
2. Install the Tech 2 to the data link connector (DLC).
3. Turn ON the ignition, with the engine OFF.
4. Turn OFF all of the vehicle accessories.
5. With the Tech 2, select Service Programming.
6. Identify vehicle information as requested by the Tech 2.
7. Select the type of module you are programming.
8. Select the type of programming to be performed.
9. Verify the displayed VIN with the vehicle VIN. If the displayed VIN does not match the actual VIN, write down the actual VIN and correct the
VIN at the Techline terminal.
10. When complete, Exit Service Programming.
11. Turn OFF the Tech 2 and disconnect the Tech 2 from the vehicle.
12. Turn OFF the ignition.
13. Connect the Tech 2 to the Techline terminal
14. Select Service Programming.
15. Select Tech 2 as the tool you are using.
16. Select the type of programming to be performed.
17. Verify the displayed VIN with the vehicle VIN Correct the VIN as necessary.
18. Select the type of module you are programming.
