System Diagnostics: Notes

Fault detection is through active and stored Diagnostic Trouble Codes (DTCs)

• DTCs are displayed by the DRBIII®.
• Active DTCs are those which currently exist in the system. The condition causing the fault must be repaired in order to clear this type of DTC.
• Stored DTCs are those which occurred in the system since the ATC Module received the last "clear diagnostic info" message.