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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.

 

 

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

SPARE


0,1

int16

10Hz

1.135 and newer

Reserved for future usage

SLOW13

1.3

0x542

6

SPARE

 

0,1

int16

10Hz

1.135 and newer

Reserved for future usage

SLOW13

1.3