Here is the 1G DSM, Mitsubishi 4g93,4g92,4g91 ecu protocol. I get it from the web archive of
http://www.syndicate.evilsoft.org/pr..._Protocol.html
Code:
Sensor | Address | Data Min | Data Max | Function | Sample
=============================================================================================================================
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)
So i made a mistake on the last post calculation:
The correct formula for RPM (refer to calculation table)
7969/255 = 31.25 for each incremental number of 255