CAN Bus messages

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:

• ARBID 0x153 ASC1 Traction Control

SIMK43 sends the following messages:

• ARBID 0x545 DME4 Engine Control Unit
• ARBID 0x329 DME2 Engine Control Unit
• ARBID 0x316 DME1 Engine Control Unit

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

• ARBID 0x1F0 ASC2 Traction Control

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