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MaxxECU Default CAN output

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

 

Specification:

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

Little endian (least significant byte first).

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

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

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

Note: MaxxECU PRO CAN2 does not have a terminator resistor built-in.

 

 

CAN ID

Offset

Name

Unit

Scale

Type

Rate

Firmware

Comment

0x520

0

RPM

rpm

1

int16

50Hz

1.67 or newer


0x520

2

Throttle position

%

0,1

int16

50Hz

1.67 or newer


0x520

4

MAP

kPa

0,1

int16

50Hz

1.67 or newer


0x520

6

Lambda

 

0,001

int16

50Hz

1.67 or newer

Average lambda

0x521

0

Lambda A

 

0,001

int16

50Hz

1.67 or newer

Lambda cylinder bank A

0x521

2

Lambda B

 

0,001

int16

50Hz

1.67 or newer

Lambda cylinder bank B

0x521

4

Ignition angle

BTDC

0,1

int16

50Hz

1.67 or newer


0x521

6

Ignition cut

%

1

int16

50Hz

1.67 or newer

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

0x522

0

Fuel pulsewidth

ms

0,01

int16

50Hz

1.67 or newer


0x522

2

Fuel duty

%

0,1

int16

50Hz

1.67 or newer

Can be over 100%.

0x522

4

Fuel cut

%

1

int16

50Hz

1.67 or newer

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

0x522

6

Vehicle Speed

km/h

0,1

int16

50Hz

1.67 or newer

Speed signal for display purpose

0x523

0

Undriven wheels avg spd

km/h

0,1

int16

50Hz

1.67 or newer

Zero when traction ctrl. system not used

0x523

2

Driven wheels avg spd

km/h

0,1

int16

50Hz

1.67 or newer

Zero when traction ctrl. system not used

0x523

4

Wheel slip

%

0,1

int16

50Hz

1.67 or newer

Zero when traction ctrl. system not used

0x523

6

Target slip

%

0,1

int16

50Hz

1.67 or newer

Zero when traction ctrl. system not used

0x524

0

Traction Ctrl Power limit

%

0,1

int16

50Hz

1.67 or newer

Zero when traction ctrl. system not used

0x524

2

Lambda corr A

%

0,1

int16

50Hz

1.67 or newer

Short term lambda-correction applied to bank A cylinders

0x524

4

Lambda corr B

%

0,1

int16

50Hz

1.67 or newer

Short term lambda-correction applied to bank B cylinders

0x524

6

Firmware version

 

0,001

int16

50Hz

1.67 or newer

Current ECU firmware version

0x530

0

Battery voltage

V

0,01

int16

10Hz

1.67 or newer


0x530

2

Baro pressure

kPa

0,1

int16

10Hz

1.67 or newer


0x530

4

Intake air temp

°C

0,1

int16

10Hz

1.67 or newer


0x530

6

Coolant temp

°C

0,1

int16

10Hz

1.67 or newer


0x531

0

Total fuel trim

%

0,1

int16

10Hz

1.67 or newer

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

0x531

2

Ethanol concentration

%

0,1

int16

10Hz

1.67 or newer

Outputs zero when no sensor is used, even on ethanol engines

0x531

4

Total ignition comp

deg

0,1

int16

10Hz

1.67 or newer

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

0x531

6

EGT 1

°C

1

int16

10Hz

1.67 or newer

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

0x532

0

EGT 2

°C

1

int16

10Hz

1.67 or newer


0x532

2

EGT 3

°C

1

int16

10Hz

1.67 or newer


0x532

4

EGT 4

°C

1

int16

10Hz

1.67 or newer


0x532

6

EGT 5

°C

1

int16

10Hz

1.67 or newer


0x533

0

EGT 6

°C

1

int16

10Hz

1.67 or newer


0x533

2

EGT 7

°C

1

int16

10Hz

1.67 or newer


0x533

4

EGT 8

°C

1

int16

10Hz

1.67 or newer


0x533

6

EGT Highest

°C

1

int16

10Hz

1.67 or newer


0x534

0

EGT Difference

°C

1

int16

10Hz

1.67 or newer

Difference between the highest and lowest EGT sensor.

0x534

2

CPU temp

°C

1

int16

10Hz

1.67 or newer

ECU temperature.

0x534

4

Error code count

 

1

int16

10Hz

1.67 or newer

The number of current active error codes.

0x534

6

Lost sync count

 

1

int16

10Hz

1.67 or newer

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

0x535

0

User analog input 1

user

0,1

int16

10Hz

1.79 or newer


0x535

2

User analog input 2

user

0,1

int16

10Hz

1.79 or newer


0x535

4

User analog input 3

user

0,1

int16

10Hz

1.79 or newer


0x535

6

User analog input 4

user

0,1

int16

10Hz

1.79 or newer


0x536

0

Gear

 

1

int16

10Hz

1.79 or newer

Calculated manual transmission gear or commanded gear

0x536

2

Boost solenoid duty

 

0,1

int16

10Hz

1.79 or newer


0x536

4

Spare

 

1

int16

10Hz

1.67 or newer


0x536

6

Spare

 

1

int16

10Hz

1.67 or newer