CAN Bus messages

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CAN Bus on Hyundai Tiburon operates at a speed of 500kb/s and so does the SIMK43 ECU.


SIMK43 reads the following messages for operation, if the corresponding module is present in car:


SIMK43 sends the following messages:

In addition to that, there are messages that are not used by the ECU, but still present on the CAN Bus:

DBC file of Tiburon's CAN Bus: Tiburon_SIMK43_ESP.dbc

DME1 0x316

Refresh Rate: 10ms

  • Byte 0 - unknown
  • Byte 1 - TQI_TQR_CAN
    Indexed Engine Torque in % of C_TQ_STND (including ASR/MSR/ETCU/LIM/AMT/GEAR intervention)
    Calculation = HEX * 0.39
  • Byte 2 - N_ENG [LSB]
  • Byte 3 - N_ENG [MSB]
    Engine Speed in rpm
    Calculation = ((HEX[MSB] * 256) + HEX[LSB]) * 0.15625
  • Byte 4 - TQI_CAN
    Indicated Engine Torque in % of C_TQ_STND (based on PVS, N, AMP, TIA ,TCO, IGA, PUC so ip_tqi_pvs__n__pvs)
    Calculation = HEX * 0.39
  • Byte 5 - TQ_LOSS_CAN
    Needs verification
    Engine Torque Loss (due to engine friction, AC compressor and electrical power consumption) in % of C_TQ_STND
    Calculation = HEX * 0.39
  • Byte 6 - Bitfield
    • Bit 0 - ERR_AMT_CAN
    • Bit 1 - ERR_AMT_CAN
  • Byte 7 - TQI_MAF_CAN
    Needs verification
    Theorethical Engine Torque in % of C_TQ_STND after charge intervention (based on MAF & IGA so ip_tqi_maf__n__maf)
    Calculation = HEX * 0.39

DME2 0x329

Refresh Rate: 10ms

  • Byte 0 - unknown
    Seems to always be one of 4 values: 0x11, 0x4F, 0x8E, 0xD9
  • Byte 1 - TEMP_ENG
    Engine (Coolant) Temperature in °C
    Calculation = (HEX * 0.75) - 48°C
    Init: 0xFF
    Min: 0x01 (-48°C)
    Max: 0xFF (142.5°C)
  • Byte 2 - AMP_CAN
    Ambient Pressure in hPa
    Calculation = (HEX * 2) + 598hPa
    Init = 0x00
    Min = 0x01 (600hPa)
    Max = 0xFE (1106hPa)
    Error = 0xFF
  • Byte 3 - unknown
    Seems to always be 0x10
  • Byte 4 - unknown
    Seems to always be 0x00
  • Byte 5 - TPS_CAN
    Accelerator Pedal Position in % of PVS_MAX
    Calculation = HEX * 0.390625
    Init = 0x00
    Min = 0x01 (0%)
    Max = 0xFE (99.2%)
    PVS Error = 0xFF
    Values around 10-15% are to be expected for an un-touched pedal
  • Byte 6 - unknown
    Seems to always be 0xFF
  • Byte 7 - Unused

DME4 0x545

Refresh Rate: 10ms

  • Byte 0 - unknown
    Seems to have a range of 0xC6 to 0xFE
  • Byte 1 - FCO[LSB]
  • Byte 2 - FCO[MSB]
    Fuel Consumption. To be verified but there is a correlation between it, rpms and the accelerator pedal position
  • Byte 3 - unknown
    Seems to have a range of 0x7B to 0x8D
  • Byte 4 - Unused
  • Byte 5 - Unused
  • Byte 6 - Unused
  • Byte 7 - Unused