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MaxxECU Default CAN output

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MaxxECU default CAN output protocol, version 1.3 (2020-09-29)

13 % extra CAN bus load when activated.

Includes data from version 1.2.

0x536 byte 2+3 is now used, was not used (SPARE) in version 1.2

 

MaxxECU default CAN output protocol, version 1.2 (2014-12-05)

7% extra CAN bus load when activated.

 

Note: DBC files are available on our website download section.

 

 

Specification:

Can baud rate: 500kbit, 11-bit ID.

Little endian (least significant byte first).

Most messages contains 4 16-bit values, 8 bytes per message.

Some messages contains a combination of 8 and 16-bit values, 8 bytes per message.

All MaxxECUs has a built in termination resistor on CAN 1. External termination (120 ohm) is recommended for bus lengths over 1m.

MaxxECU PRO with a secondary bus (CAN 2) does not have a built-in terminator resistor.

Wiring loom: Twisted pink / gray. Pink = CAN L, grey = CAN H.

 

 

CAN ID

Offset

Name

Unit

Scale

Type

Rate

Firmware

Comment

Name

Version

0x520

0

RPM

rpm

1

int16

50Hz

1.67 and newer


FAST1

1.2

0x520

2

Throttle position/pedal

%

0,1

int16

50Hz

1.67 and newer


FAST1

1.2

0x520

4

MAP

kPa

0,1

int16

50Hz

1.67 and newer


FAST1

1.2

0x520

6

Lambda

 

0,001

int16

50Hz

1.67 and newer

Average lambda

FAST1

1.2

0x521

0

Lambda A

 

0,001

int16

50Hz

1.67 and newer

Lambda cylinder bank A

FAST2

1.2

0x521

2

Lambda B

 

0,001

int16

50Hz

1.67 and newer

Lambda cylinder bank B

FAST2

1.2

0x521

4

Ignition angle

BTDC

0,1

int16

50Hz

1.67 and newer


FAST2

1.2

0x521

6

Ignition cut

%

1

int16

50Hz

1.67 and newer

Percent of ignition event being cut (for rev-limit etc)

FAST2

1.2

0x522

0

Fuel pulsewidth primary

ms

0,01

int16

50Hz

1.67 and newer


FAST3

1.2

0x522

2

Fuel duty primary

%

0,1

int16

50Hz

1.67 and newer

Can be over 100%.

FAST3

1.2

0x522

4

Fuel cut

%

1

int16

50Hz

1.67 and newer

Percent of fuel event being cut (for rev-limit etc)

FAST3

1.2

0x522

6

Vehicle Speed

km/h

0,1

int16

50Hz

1.67 and newer

Speed signal for display purpose

FAST3

1.2

0x523

0

Undriven wheels avg spd

km/h

0,1

int16

50Hz

1.67 and newer

Zero when traction ctrl. system not used

FAST4

1.2

0x523

2

Driven wheels avg spd

km/h

0,1

int16

50Hz

1.67 and newer

Zero when traction ctrl. system not used

FAST4

1.2

0x523

4

Wheel slip

%

0,1

int16

50Hz

1.67 and newer

Zero when traction ctrl. system not used

FAST4

1.2

0x523

6

Target slip

%

0,1

int16

50Hz

1.67 and newer

Zero when traction ctrl. system not used

FAST4

1.2

0x524

0

Traction Ctrl Power limit

%

0,1

int16

50Hz

1.67 and newer

Zero when traction ctrl. system not used

FAST5

1.2

0x524

2

Lambda corr A

%

0,1

int16

50Hz

1.67 and newer

Short term lambda-correction applied to bank A cylinders

FAST5

1.2

0x524

4

Lambda corr B

%

0,1

int16

50Hz

1.67 and newer

Short term lambda-correction applied to bank B cylinders

FAST5

1.2

0x524

6

Firmware version

 

0,001

int16

50Hz

1.67 and newer

Current ECU firmware version

FAST5

1.2

0x530

0

Battery voltage

V

0,01

int16

10Hz

1.67 and newer


SLOW1

1.2

0x530

2

Baro pressure

kPa

0,1

int16

10Hz

1.67 and newer


SLOW1

1.2

0x530

4

Intake air temp

°C

0,1

int16

10Hz

1.67 and newer


SLOW1

1.2

0x530

6

Coolant temp

°C

0,1

int16

10Hz

1.67 and newer


SLOW1

1.2

0x531

0

Total fuel trim

%

0,1

int16

10Hz

1.67 and newer

Total amount of adjustment applied to the fuel pulse, excluding acceleration enrichment

SLOW2

1.2

0x531

2

Ethanol concentration

%

0,1

int16

10Hz

1.67 and newer

Outputs 85% when no sensor is used, or in case of a sensor error.

SLOW2

1.2

0x531

4

Total ignition comp

deg

0,1

int16

10Hz

1.67 and newer

Total amount of adjustment applied to the ignition angle (in degrees)

SLOW2

1.2

0x531

6

EGT 1

°C

1

int16

10Hz

1.67 and newer

Exhaust gas temperature. All values are sent, even for unconfigured sensors

SLOW2

1.2

0x532

0

EGT 2

°C

1

int16

10Hz

1.67 and newer


SLOW3

1.2

0x532

2

EGT 3

°C

1

int16

10Hz

1.67 and newer


SLOW3

1.2

0x532

4

EGT 4

°C

1

int16

10Hz

1.67 and newer


SLOW3

1.2

0x532

6

EGT 5

°C

1

int16

10Hz

1.67 and newer


SLOW3

1.2

0x533

0

EGT 6

°C

1

int16

10Hz

1.67 and newer


SLOW4

1.2

0x533

2

EGT 7

°C

1

int16

10Hz

1.67 and newer


SLOW4

1.2

0x533

4

EGT 8

°C

1

int16

10Hz

1.67 and newer


SLOW4

1.2

0x533

6

EGT Highest

°C

1

int16

10Hz

1.67 and newer


SLOW4

1.2

0x534

0

EGT Difference

°C

1

int16

10Hz

1.67 and newer

Difference between the highest and lowest EGT sensor.

SLOW5

1.2

0x534

2

CPU temp

°C

1

int16

10Hz

1.67 and newer

ECU temperature.

SLOW5

1.2

0x534

4

Error code count

 

1

int16

10Hz

1.67 and newer

The number of current active error codes.

SLOW5

1.2

0x534

6

Lost sync count

 

1

int16

10Hz

1.67 and newer

Number of times the ECU has detected errors in the engine position sensors.

SLOW5

1.2

0x535

0

User analog input 1

user

0,1

int16

10Hz

1.79 and newer


SLOW6

1.2

0x535

2

User analog input 2

user

0,1

int16

10Hz

1.79 and newer


SLOW6

1.2

0x535

4

User analog input 3

user

0,1

int16

10Hz

1.79 and newer


SLOW6

1.2

0x535

6

User analog input 4

user

0,1

int16

10Hz

1.79 and newer


SLOW6

1.2

0x536

0

Gear

 

1

int16

10Hz

1.79 and newer

Calculated manual transmission gear or commanded gear

SLOW7

1.2

0x536

2

Boost solenoid duty

%

0,1

int16

10Hz

1.79 and newer


SLOW7

1.2

0x536

4

Oil pressure

kPa

0,1

int16

10Hz

1.135 and newer

Updated (V1.2 did not transmit anything here)

SLOW7

1.3

0x536

6

Oil temp

°C

0,1

int16

10Hz

1.135 and newer

Updated (V1.2 did not transmit anything here)

SLOW7

1.3

0x537

0

Fuel Pressure 1

kPa

0,1

int16

10Hz

1.135 and newer


SLOW8

1.3

0x537

2

Wastegate pressure

kPa

0,1

int16

10Hz

1.135 and newer


SLOW8

1.3

0x537

4

Coolant pressure

kPa

0,1

int16

10Hz

1.135 and newer


SLOW8

1.3

0x537

6

Boost target

kPa

0,1

int16

10Hz

1.135 and newer


SLOW8

1.3

0x538

0

User channel 1

user

0,1

int16

10Hz

1.135 and newer

User selectable source sensor in MTune.

SLOW9

1.3

0x538

2

User channel 2

user

0,1

int16

10Hz

1.135 and newer

User selectable source sensor in MTune.

SLOW9

1.3

0x538

4

User channel 3

user

0,1

int16

10Hz

1.135 and newer

User selectable source sensor in MTune.

SLOW9

1.3

0x538

6

User channel 4

user

0,1

int16

10Hz

1.135 and newer

User selectable source sensor in MTune.

SLOW9

1.3

0x539

0

User channel 5

user

0,1

int16

10Hz

1.135 and newer

User selectable source sensor in MTune.

SLOW10

1.3

0x539

2

User channel 6

user

0,1

int16

10Hz

1.135 and newer

User selectable source sensor in MTune.

SLOW10

1.3

0x539

4

User channel 7

user

0,1

int16

10Hz

1.135 and newer

User selectable source sensor in MTune.

SLOW10

1.3

0x539

6

User channel 8

user

0,1

int16

10Hz

1.135 and newer

User selectable source sensor in MTune.

SLOW10

1.3

0x525

0

User channel 9

user

0,1

int16

50Hz

1.135 and newer

User selectable source sensor in MTune.

FAST6

1.3

0x525

2

User channel 10

user

0,1

int16

50Hz

1.135 and newer

User selectable source sensor in MTune.

FAST6

1.3

0x525

4

User channel 11

user

0,1

int16

50Hz

1.135 and newer

User selectable source sensor in MTune.

FAST6

1.3

0x525

6

User channel 12

user

0,1

int16

50Hz

1.135 and newer

User selectable source sensor in MTune.

FAST6

1.3

0x526

0:0

Shiftcut active

 

 

int8

50Hz

1.135 and newer


FAST7

1.3

0x526

0:1

Rev-limit active

 

 

 

50Hz

1.135 and newer


FAST7

1.3

0x526

0:2

Anti-lag active


 

 

50Hz

1.135 and newer


FAST7

1.3

0x526

0:3

Launch control active

 

 

 

50Hz

1.135 and newer

 

FAST7

1.3

0x526

0:4

Traction power limiter active


 

 

50Hz

1.135 and newer

 

FAST7

1.3

0x526

0:5

Throttle blip active


 

 

50Hz

1.135 and newer


FAST7

1.3

0x526

0:6

AC/idle up active

 

 

 

50Hz

1.135 and newer


FAST7

1.3

0x526

0:7

Knock detected

 

 

 

50Hz

1.135 and newer

Visible for 250msec after a detected knock.

FAST7

1.3

0x526

1:0

Brake pedal active


 

int8

50Hz

1.135 and newer


FAST7

1.3

0x526

1:1

Clutch pedal active


 

 

50Hz

1.135 and newer


FAST7

1.3

0x526

1:2

Speed limit active

 

 

 

50Hz

1.135 and newer


FAST7

1.3

0x526

1:3

GP limiter active


 

 

50Hz

1.135 and newer


FAST7

1.3

0x526

1:4

User cut active

 

 

 

50Hz

1.135 and newer


FAST7

1.3

0x526

1:5

ECU is logging

 

 

 

50Hz

1.135 and newer


FAST7

1.3

0x526

1:6

Nitrous active

 

 

 

50Hz

1.135 and newer


FAST7

1.3

0x526

1:7

SPARE

 

 

 

50Hz

1.135 and newer

Reserved for future usage

FAST7

1.3

0x526

2

SPARE

 

 

int16

50Hz

1.135 and newer

Reserved for future usage

FAST7

1.3

0x526

4

Rev-limit RPM

rpm

1

int16

50Hz

1.135 and newer


FAST7

1.3

0x526

6

SPARE

rpm

1

int16

50Hz

1.135 and newer

Reserved for future usage

FAST7

1.3

0x527

0

Acceleration Forward

G

0,01

int16

50Hz

1.135 and newer


FAST8

1.3

0x527

2

Acceleration Right

G

0,01

int16

50Hz

1.135 and newer


FAST8

1.3

0x527

4

Acceleration Up

G

0,01

int16

50Hz

1.135 and newer


FAST8

1.3

0x527

6

Lambda target

 

0,001

int16

50Hz

1.135 and newer


FAST8

1.3

0x528

0

Knocklevel All peak


1

int16

50Hz

1.135 and newer


FAST9

1.3

0x528

2

Knock correction

deg

0,1

int16

50Hz

1.135 and newer


FAST9

1.3

0x528

4

Knock count

 

1

int16

50Hz

1.135 and newer

 

FAST9

1.3

0x528

6

Last knock cylinder

 

1

int16

50Hz

1.135 and newer

 

FAST9

1.3

0x540

0

Active boost table

 

1

int8

10Hz

1.135 and newer


SLOW11

1.3

0x540

1

Active Tune selector


1

int8

10Hz

1.135 and newer

 

SLOW11

1.3

0x540

2

Virtual fuel tank

L

0,1

int16

10Hz

1.135 and newer


SLOW11

1.3

0x540

4

Transmission temp

°C

0,1

int16

10Hz

1.135 and newer


SLOW11

1.3

0x540

6

Differential temp

°C

0,1

int16

10Hz

1.135 and newer


SLOW11

1.3

0x541

0

VVT intake cam 1 position

deg

0,1

int16

10Hz

1.135 and newer


SLOW12

1.3

0x541

2

VVT exhaust cam 1 position

deg

0,1

int16

10Hz

1.135 and newer


SLOW12

1.3

0x541

4

VVT intake cam 2 position

deg

0,1

int16

10Hz

1.135 and newer

 

SLOW12

1.3

0x541

6

VVT exhaust cam 2 position

deg

0,1

int16

10Hz

1.135 and newer

 

SLOW12

1.3

0x542

0

VVT intake cam target position

deg

0,1

int16

10Hz

1.135 and newer

 

SLOW13

1.3

0x542

2

VVT exhaust cam target position

deg

0,1

int16

10Hz

1.135 and newer


SLOW13

1.3

0x542

4

ECU errors code(s)


0,1

int16

10Hz

1.149 and newer

Rotates all stored error codes, 0x0000 when no code stored.

SLOW13

1.3

0x542

6

SPARE

 

0,1

int16

10Hz

1.135 and newer

Reserved for future usage

SLOW13

1.3

 

Known CAN colisions with this protocol

Default V1.3 0x540, collide with the VAG DSG, use Default V1.2 instead on any DSG application.