Diagnostics

DIAGNOSTICS

Car Configuration File

The Car Configuration File (CCF) contains all relevant data about the specification and market condition of the applicable vehicle, immobilisation codes and driver personal settings. This information is retained in the Central Junction Box (CJB), the Engine Control Module (ECM) and the instrument cluster enabling each system module to detect which systems and components are fitted to the vehicle. The information is continuously transferred between the three system modules to ensure that the data is constantly backed-up between the modules.

CAUTION: When a new instrument cluster is to be installed, T4 must be connected to the vehicle and the instrument cluster renewal procedure followed to replace the cluster. This will ensure that vehicle coding data is correctly installed in the new instrument cluster. T4 will also record the current service interval data and restore the settings in the new instrument cluster.

When a new instrument cluster is installed, T4 is used to transfer the CCF data from the CJB to the replacement cluster. Vehicle coding data such as engine type, market etc is retrieved and used to update the replacement instrument cluster.

The CCF will also need to be updated using T4 if the vehicle is modified in service from its original factory specification. This can include fitting non-standard wheels and/or tires, optional accessory dealer fit components with an electrical interface, i.e. park distance control.