DSM/On-Board Diagnostics

OBD/OBDI/OBD1/ALDL

• https://www.troublecodes.net/mitsu/

ALDL Adapter

• http://www.mitsubishiclubfinland.com/wiki/index.php?title=ALDL-RS232

Mitsuduino

• https://www.dsmtuners.com/threads/on-board-diagnostic-between-mitsubishi-ecu-using-arduino.464711/
• http://mitsuduino.blogspot.com/?m=1
• https://gist.github.com/anonymous/5696499/forks
• https://gist.github.com/rizal-azalli/b5b7af16187f2f4d731f#file-obdcodetablevalue

Accel Enrichment 0x1D 0x01 == 0% 0xFF == 100% y = 100(x/255) % Coolant Temp 0x07 0x01 == 307deg F 0xFF == -62deg F y = -1.45x + 308 deg F Engine Speed 0x21 0x01 == 31 0xFF == 7969 y = 31.25x rpm Fuel Trim High 0x0E 0x01 == 1% 0xFF == 199% y = .78x % Fuel Trim Low 0x0C 0x01 == 1% 0xFF == 199% y = .78x % Fuel Trim Middle 0x0D 0x01 == 1% 0xFF == 199% y = .78x % Injector Pulse Width 0x29 0x01 == .256ms 0xFF == 65.3ms y = .256x ms Oxygen Feedback Trim 0x0F 0x01 == 1% 0xFF == 199% y = .78x % Oxygen Sensor 0x13 0x01 == .02v 0xFF == 4.98v y = .0195x v Throttle Position 0x17 0x01 == 0% 0xFF == 100% y = 100(x/255) % Air Flow Hz 0x1A 0x01 == 6Hz 0xFF == 1606Hz y = 6.29x Hz Air Temperature 0x3A 0x01 == 356deg F 0xFF == -74deg F y = -1.69x + 358 deg F Air Volume 0x2C 0x01 == 1 0xFF == 255 y = x Barometer 0x15 0x01 == 0bar 0xFF == 1.24bar y = .00486x bar ISC Steps 0x16 0x01 == 1 0xFF == 255 y = x Knock Sum 0x26 0x01 == 1 0xFF == 255 y = x Timing Advance 0x06 0x01 == -9 deg 0xFF == 245 deg y = x - 10 deg Battery 0x14 0x01 == 0.1v 0xFF == 18.7v y = .0733x v EGR Temperature 0x12 0x01 == 595deg F 0xFF == -94deg F y = -2.7x + 597.7 deg F TDC 0x02 0x04 (inverted) Power Steering 0x02 0x08 (inverted) AC Switch 0x02 0x10 (inverted) Park/Neutral 0x02 0x20 (inverted) Idle Switch 0x02 0x80 (inverted) AC Clutch 0x00 0x20 (inverted)

Sensor	Address	Data Min	Data Max	Function	Sample

MUT-III

Downloads

• http://blog.obdii365.com/2019/10/04/mitsubishi-mut-iii-software-download-install-review/