Group 28 Engine Control Module (ECM) Diagnostic Trouble Codes (DTCs) SAE J1587 Data Link Communication The electronic control units (ECUs) also communicate on the SAE J1587 data link. These ECUs communicate according to the SAE J1587 standard. The standard has been extended with MACK’s supplement (PPID, PSID). The diagnostic trouble codes (DTCs) set by the ECUs contain information that is described by the following abbreviations. PPID Proprietary Parameter Identification Description Mack: Unique identification of a parameter (value). SID Subsystem Identification Description: Identification of a component. MID Message Identification Description: Identification of a control module.
PSID Proprietary Subsystem Identification Description Mack: Unique identification of a component. PID Parameter Identification Description: Identification of a parameter (value). FMI Failure Mode Identifier: Identification of fault types.
SAE J1587 FMI Table 6 FMI SAE Text 0 Data valid, but above the normal working range 1 Data valid, but below the normal working range 2 Intermittent or incorrect data 3 Abnormally high voltage or short circuit to higher voltage 4 Abnormally low voltage or short circuit to lower voltage 5 Abnormally low current or open circuit 6 Abnormally high current or short circuit to ground 7 Incorrect response from a mechanical system 8 Abnormal frequency 9 Abnormal update rate 10 Abnormally strong vibrations 11 Non-identifiable fault 12 Faulty module or component 13 Calibration values outside limits 14 Special instructions 15 Reserved for future use