DSM/On-Board Diagnostics: Difference between revisions

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* https://gist.github.com/rizal-azalli/b5b7af16187f2f4d731f#file-obdcodetablevalue
* https://gist.github.com/rizal-azalli/b5b7af16187f2f4d731f#file-obdcodetablevalue


{|
{| class="wikitable"
!|Sensor
!|Sensor
!|Address
!|Address
Line 18: Line 18:
!|Data Max
!|Data Max
!|Function
!|Function
!|Sample
!|Unit
|-
|-
Accel Enrichment
|Accel Enrichment
0x1D
|0x1D
0x01 == 0%
|0x01 == 0%
0xFF == 100%
|0xFF == 100%
y = 100(x/255)
|y = 100(x/255)
%
|%
|-
|-
Coolant Temp
|Coolant Temp
0x07
|0x07
0x01 == 307deg F
|0x01 == 307deg F
0xFF == -62deg F
|0xFF == -62deg F
y = -1.45x + 308
|y = -1.45x + 308
deg F
|deg F
|-
|-
Engine Speed
|Engine Speed
0x21
|0x21
0x01 == 31
|0x01 == 31
0xFF == 7969
|0xFF == 7969
y = 31.25x
|y = 31.25x
rpm
|rpm
|-
|-
Fuel Trim High
|Fuel Trim High
0x0E
|0x0E
0x01 == 1%
|0x01 == 1%
0xFF == 199%
|0xFF == 199%
y = .78x
|y = .78x
%
|%
|-
|-
Fuel Trim Low 0x0C 0x01 == 1% 0xFF == 199% y = .78x %
|Fuel Trim Low
|0x0C
|0x01 == 1%
|0xFF == 199%
|y = .78x
|%
|-
|-
Fuel Trim Middle
|Fuel Trim Middle
0x0D
|0x0D
0x01 == 1%
|0x01 == 1%
0xFF == 199%
|0xFF == 199%
y = .78x
|y = .78x
%
|%
|-
|-
Injector Pulse Width
|Injector Pulse Width
0x29
|0x29
0x01 == .256ms
|0x01 == .256ms
0xFF == 65.3ms
|0xFF == 65.3ms
y = .256x
|y = .256x
ms
|ms
|-
|-
Oxygen Feedback Trim
|Oxygen Feedback Trim
0x0F
|0x0F
0x01 == 1%
|0x01 == 1%
0xFF == 199%
|0xFF == 199%
y = .78x
|y = .78x
%
|%
|-
|-
Oxygen Sensor
|Oxygen Sensor
0x13
|0x13
0x01 == .02v
|0x01 == .02v
0xFF == 4.98v
|0xFF == 4.98v
y = .0195x
|y = .0195x
v
|v
|-
|-
Throttle Position
|Throttle Position
0x17
|0x17
0x01 == 0%
|0x01 == 0%
0xFF == 100%
|0xFF == 100%
y = 100(x/255)
|y = 100(x/255)
%
|%
|-
|-
Air Flow Hz
|Air Flow Hz
0x1A
|0x1A
0x01 == 6Hz
|0x01 == 6Hz
0xFF == 1606Hz
|0xFF == 1606Hz
y = 6.29x
|y = 6.29x
Hz
|Hz
|-
|-
Air Temperature
|Air Temperature
0x3A
|0x3A
0x01 == 356deg F
|0x01 == 356deg F
0xFF == -74deg F
|0xFF == -74deg F
y = -1.69x + 358
|y = -1.69x + 358
deg F
|deg F
|-
|-
Air Volume
|Air Volume
0x2C
|0x2C
0x01 == 1
|0x01 == 1
0xFF == 255
|0xFF == 255
y = x
|y = x
|-
|-
Barometer
|Barometer
0x15
|0x15
0x01 == 0bar
|0x01 == 0bar
0xFF == 1.24bar
|0xFF == 1.24bar
y = .00486x
|y = .00486x
bar
|bar
|-
|-
ISC Steps
|ISC Steps
0x16
|0x16
0x01 == 1
|0x01 == 1
0xFF == 255
|0xFF == 255
y = x
|y = x
|-
|-
Knock Sum
|Knock Sum
0x26
|0x26
0x01 == 1
|0x01 == 1
0xFF == 255
|0xFF == 255
y = x
|y = x
|-
|-
Timing Advance
|Timing Advance
0x06
|0x06
0x01 == -9 deg
|0x01 == -9 deg
0xFF == 245 deg
|0xFF == 245 deg
y = x - 10
|y = x - 10
deg
|deg
|-
|-
Battery
|Battery
0x14
|0x14
0x01 == 0.1v
|0x01 == 0.1v
0xFF == 18.7v
|0xFF == 18.7v
y = .0733x
|y = .0733x
v
|v
|-
|-
EGR Temperature
|EGR Temperature
0x12
|0x12
0x01 == 595deg F
|0x01 == 595deg F
0xFF == -94deg F
|0xFF == -94deg F
y = -2.7x + 597.7
|y = -2.7x + 597.7
deg F  
|deg F  
|-
|-
TDC
|TDC
0x02
|0x02
0x04 (inverted)
|0x04 (inverted)
|-
|-
Power Steering
|Power Steering
0x02
|0x02
0x08 (inverted)
|0x08 (inverted)
|-
|-
AC Switch
|AC Switch
0x02
|0x02
0x10 (inverted)
|0x10 (inverted)
|-
|-
Park/Neutral
|Park/Neutral
0x02
|0x02
0x20 (inverted)
|0x20 (inverted)
|-
|-
Idle Switch
|Idle Switch
0x02
|0x02
0x80 (inverted)
|0x80 (inverted)
|-
|-
AC Clutch
|AC Clutch
0x00
|0x00
0x20 (inverted)
|0x20 (inverted)
|}
|}


Revision as of 13:31, 29 April 2021

OBD/OBDI/OBD1/ALDL

ALDL Adapter

Mitsuduino

Sensor Address Data Min Data Max Function Unit
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)

MUT-III

Downloads

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