View source for SIMK43 CAN Bus

<div style="float:right;">__TOC__</div>

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:
*[[CAN Bus ID 0x153 ASC1|ARBID 0x153 ASC1 Traction Control]]

SIMK43 sends the following messages:
*[[SIMK43 CAN Bus#DME4 0x545|ARBID 0x545 DME4 Engine Control Unit]]
*[[SIMK43 CAN Bus#DME2 0x329|ARBID 0x329 DME2 Engine Control Unit]]
*[[SIMK43 CAN Bus#DME1 0x316|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:
*[[CAN Bus ID 0x1F0 ASC2|ARBID 0x1F0 ASC2 Traction Control]]

[https://www.csselectronics.com/pages/can-dbc-file-database-intro DBC file] of Tiburon's CAN Bus: [https://opengk.org/files/Users/dante383/Tiburon_SIMK43_ESP.dbc Tiburon_SIMK43_ESP.dbc] [https://drive.google.com/file/d/1RxaEK9b12DtS-l0WUpPHeZ6p1i82ay5G/view?usp=sharing <nowiki>[mirror]</nowiki>]
[[File:SavvyCAN candump with DBC.png|none|thumb|1048x1048px|Example of a candump log imported into SavvyCAN with DBC file loaded]]

==Connection points==
There is only one CAN bus found in the Tiburons, there are no gateways present. 

CAN Bus is exposed on the standard pins in the [[Data link connector (OBD2)|OBD2 connector]] as in the following image (vehicle side):

[[File:Obd2 canbus pinout.png|center|thumb|Tiburon's OBD2 plug pinout, limited to power and canbus ]]
Depending on vehicle's production date and trim, there are between 1 to 4 modules on the bus.
{| class="wikitable"
|+ Modules connected to the CAN Bus
! rowspan="2" |Module name
! colspan="2" |Connector name
! rowspan="2" |CAN high pin
! rowspan="2" |CAN low pin
! colspan="2" |CAN ID
|-
!2.0
!2.7
!SIMK41
!SIMK43
|-
|[[5WY ECM Identification|ECM]]
|[[Siemens 5WY 2 Connector Pinout|2.0 pinout]]
|[[Siemens 5WY 5 Connector Pinout|2.7 pinout]]
|see pinout
|see pinout
|
|[[SIMK43 CAN Bus|0x545, 0x329, 0x316]]
|-
|TCM
|[[Siemens 5WY 2 Connector Pinout|2.0 pinout]]
|[[Siemens 5WY 5 Connector Pinout|2.7 pinout]]
|see pinout
|see pinout
|
|
|-
| Multigauge unit (if equipped)
| colspan="2" |M42
|7
|1
|
|
|-
|ABS module (if equipped)
| colspan="2" |E37
|11
|10
|
|[[CAN Bus ID 0x153 ASC1|0x153]]
|}

==Messages==

===DME1 0x316===
Refresh Rate: 10ms

*'''Byte 0 -''' bitfield
**Bit 0 - SWI_IGK_CAN: Terminal 15 –KEY ON
**Bit 1 - F_N_ENG_CAN: Error – engine speed signal
**Bit 2 - ACK_TCS_CAN: Acknowledement TCS
**Bit 3 - PUC_STAT: Engine in fuel cut off
**Bit 4 - TQ_COR_STAT_CAN: Status, torque intervention
**Bit 6 - RLY_AC_CAN: Activation, air conditioner compressor relay
**Bit 7 - F_SUB_TQI_CAN: Activation, air conditioner compressor relay
* '''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
Example messages: <syntaxhighlight>
05 0B B8 0C 0B 0A 00 77

05 0C B8 27 0C 0B 46 80

0D 00 84 27 00 0B 31 82
</syntaxhighlight>

===DME2 0x329 ===
Refresh Rate: 10ms

* '''Byte 0''' - Bitfield
*:* Bit 0 - MUL_INFO: Multiplexed information - CAN Version (CAN_VERS_CAN), - TCU configuration (CONF_TCU_CAN) - OBD freeze frame (OBD_FRF_ACK_CAN) - Torque scaling factor (TQ_STND_CAN) (6 bits long)
*:* Bit 6 - MUL_CODE: Identification of MUL_INFO 
*'''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''' '''- VB_OFF_ACT_CAN'''
*:Detection of battery disconnection (0x10 - battery is connected)
*'''Byte 4''' '''- ACK_ES_CAN'''
*:Acknowledgement „engine stopped“
*'''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''' '''- ENG_CHR_CAN'''
*:Engine Characteristic – Kind of fuel, ETS. 0xFF - gasoline
*'''Byte 7''' - Unused
Example messages:<syntaxhighlight>
4F B2 82 10 00 20 FF

4F B0 82 10 00 32 FF

4F B1 84 10 00 51 FF
</syntaxhighlight>

===DME4 0x545===
Refresh Rate: 10ms

*'''Byte 0''' - Bitfield
*:* Bit 0 - IM_AUTHEN_CAN: Authetication "immobilzer" (0/1), 1 bit long
*:* Bit 1 - L_MIL_CAN: Lamp "check engine for OBD" (0/1), 1 bit long
*:* Bit 2 - IM_STAT_CAN: Status "immobilizer" (0/1), 1 bit long
*:* Bit 3 - AMP_CAN: Atmospheric Pressure [mmHg]. 5 bytes long 
*'''Byte 1 - FCO[LSB]'''
*'''Byte 2 - FCO[MSB]'''
*:Fuel Consumption in microliters (μl). Formula: HEX * 0,128
*'''Byte 3''' - VB
*:Battery voltage
*'''Byte 4''' - Unused
*'''Byte 5''' - Unused
*'''Byte 6''' - Unused
*'''Byte 7''' - Unused
Example messages:<syntaxhighlight>
F6 61 01 89

EE FA 02 89

EE 8B 02 88
</syntaxhighlight>

==Example logs==
Here are some example canbus dumps. They were recorded on a 2008 Tiburon, 2.0 (cvvt) with manual transmission, fitted with ABS and ESP.

https://drive.google.com/drive/folders/1j9GmhrkH-Lm7k_E4v4JQ_gHB_lFeJ5_U?usp=sharing

'''2008_2.0_normal_city.log''' - This one features "eco-driving" around the city, without exceeding 40mph.

'''2008_2.0_normal_highway.log''' - eco-driving around the highway, without exceeding 80mph.

'''2008_2.0_spirited_highway.log''' - changing gears near the limiter until getting to the 110mph mark and mostly staying there for the whole duration of the log.

'''2008_2.0_spirited_city.log''' - dynamic stroll through the city. This is the only log during which ESP intervention happened - it's reflected in [[CAN Bus ID 0x153 ASC1|ESP's module CAN messages]]. 

Rest of the logs should have self-explanatory names.

__FORCETOC__