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Handling control modules

Handling control modules


All control modules are more or less sensitive to static electricity and, if handled carelessly or incorrectly, may be damaged so seriously that they no longer work properly. It is therefore important to ensure that the following rules are observed at all times when a control module is removed or replaced for any reason.


• Avoid unplugging or removing a control module unless absolutely necessary.

• Never touch the connector pins and never place the control module in such a way that the pins come into contact with foreign bodies.

• Before unpacking a new control module, ground the packaging to the car body. Open the packaging as shortly as possible before installing the control module.

• When handling or working on control modules it is important to ground yourself from time to time. This is particularly important when you have been sitting in the car, when you have changed position, or when moving round the car. It is even more important under climatic conditions when the air is exceptionally dry (e.g. during the winter in countries with a cold climate).

• Avoid wearing clothes made of synthetic materials (man-made fibres).

• Avoid wearing shoes with insulating rubber soles.

• Always handle control modules that are suspected of being defective in exactly the same manner as those that are in perfect working order. This will greatly improve your chances of locating the cause of the fault.