Mercedes Benz

Computers/Controls - Run Test Modules to Completion SI M 07 10 07 Workshop Environment Systems November 2007 Technical Service SUBJECT Run Test Modules to Completion MODEL All INFORMATION In cases where multiple faults are set in a control module, the test module often runs through each of the fault codes sequentially within the same test module. This means that more than one repair may need to be completed. Exiting the test module to perform the first repair means that any additional repairs that follow later in the test module will be missed. Furthermore, if the first repair is a programming fix, this will result in any remaining fault codes being deleted as part of the programming process, making it impossible to go back to the test module for additional diagnosis. As an example for ELV (Electric Steering Lock) issues, the CAS (Car Access System) often has multiple stored faults (e.g., A112 and A116). The test module first diagnoses fault A112 and recommends a programming repair, to...