Many service procedures, including the programming of modules, require the ignition key to be turned on, without the engine running. This means that the vehicle's systems are operating from the vehicle's battery. For example, the new 2007 full-size utilities have up to 24 control modules, which represent a considerable current draw.
To prevent running down the battery below a useable level, take these precautions.
- Be sure the battery is fully charged before beginning the procedure.
- Consider connecting an approved battery charger during the service procedure. The Midtronics PSC line of chargers (fig. 9) has been validated for use during module programming. Two output levels are available -- the 30 amp PSC-300 and the 55 amp PSC-550. Refer to the July 2005 issue of TechLink for complete information.Â
- Thanks to Mark Stesney
To prevent running down the battery below a useable level, take these precautions.
- Be sure the battery is fully charged before beginning the procedure.
- Consider connecting an approved battery charger during the service procedure. The Midtronics PSC line of chargers (fig. 9) has been validated for use during module programming. Two output levels are available -- the 30 amp PSC-300 and the 55 amp PSC-550. Refer to the July 2005 issue of TechLink for complete information.Â

- Thanks to Mark Stesney

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