Engine Trouble Codes
Extracting DTC'sFault tracing may be carried out either with the ST or by means of the three test modes, which can be accessed through socket 2 (MFI) or 6 (DI) on DLC "A".
Diagnostic test modes:
^ Mode 1 Displays Diagnostic Trouble Codes (DTCs) (if any are stored)
^ Mode 2 Acknowledges component operation
^ Mode 3 Operates components in a given, predetermined sequence