Diagnostic Trouble Codes (DTCS)

A diagnostic trouble code (DTC) is stored in the control module if the Convertible Roof Module (CRM) detects a fault. Every diagnostic trouble code (DTC) has a counter which records the number of cycles which have been "fault-free" since the diagnostic trouble code (DTC) was stored. A fault which is detected in each operating cycle is defined as permanent. A fault which is detected in one or more operating cycles (although not the present one) is defined as intermittent.

An operating cycle is the period from when the ignition has been off, then on for at least 10 seconds and finally off for at least 10 seconds.