Diagnostic Messages

Diagnostic message 1 (DM01):

  • contains the active Diagnostic Trouble Codes
  • Send cyclically
  • It is preceded by the diagnostic lamp status
  • Transmission rate: >1s
  • Data Length: Variable
  • Parameter Group Number: 65226 (00FECA16)
Byte Bits Description
1 7-8 Lamp status of Malfunction indicator
6-5 Lamp status of Red stop
4-3 Lamp status of Amber Warning
2-1 Lamp Status of Protect
2 7-8 Flash Malfunction Indicator Lamp
6-5 Flash Red Stop Lamp
4-3 Flash Amber Warning Lamp
2-1 Flash Protect Lamp
3 8-1 SPN, 8 least significant bits of SPN (MSB at bit 8)
4 8-1 SPN, second byte of SPN (MSB at bit 8)
5 8-6 SPN, 3 most significant bits (MSB at bit 8)
5-1 FMI
6 8 SPN Conversion Method
7-1 Occurrence Count

 

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