V-MAC Co-Pilot Operator’s Manual 65 Diagnostic Trouble Codes (DTCs) Electronic Dash Display DTCs are used for isolating and troubleshooting any active faults in the vehicle management and control (V-MAC) IV system. Active DTCs can be quickly viewed on the electronic dash display (Co-Pilot) in the following format:
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1 MID — Messenger Identifier Code 2 PID, PPID, PSID or SID — Parameter Identifier, Proprietary Parameter Identifier, Proprietary Subsystem Identifier or Subsystem Identifier Code 3 FMI — Failure Mode Identifier Figure 32 — DTC Indicator (J1587)