Operation CHARM: Car repair manuals for everyone.

Electronic Control Modules






Electronic Control Modules

Connect the ground (GND) connection of the electric welding appliance directly to the part to be welded. When doing this, make sure that no electrically insulated parts are between the ground (GND) connection and the welding point..

Do not allow the ground (GND) connection or the welding electrode to touch the electronic control units and electrical wiring.

Procedure for Electronic Control Modules after accident repairs

It is only necessary to install new electronic control units after an accident where at least one of the following conditions is present:

The function check results in the message "Control module faulty".

If electronic components, e.g. ABS control modules, were removed for servicing and then reused, these are to be checked for function according to the available documentation after installing. To do this, check all DTC memories with a tester and correct any possible malfunctions present.