milodarling / rzr_can_hacks

Hacks to make an electric Polaris RZR work well!

RZR_CAN_HACKS

Hacks to make an electric Polaris RZR work well!

This project uses an Arduino Uno with a SeeedStudio CAN-bus shield to send and receive CAN messages that do things such as keep power steering running, turn off the check-engine light (even though there is no longer and engine), and restore the speedometer and tachometer on the dash.

CAN Messages

Read:

• RPM from Curtis Controller. Address: 0x601, byte 0 = RPM high byte, byte 1 = RPM low byte.

• Gear shifter position from RZR CAN-bus. Address: 0x18F00500, byte 5 = shifter postion. 0x4C = low gear drive, 0x48 = high gear drive, 0x4E = neutral, 0x52 = reverse, 0x50 = park, 0x2D = error.

Sent:

• Speed to RZR CAN-bus. Address: 0x18FEF100, message = { 0xFF, SPEED LSB, SPEED MSB, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }, where SPEED is the speed in mph times 500.

• RPM to RZR CAN-bus. Address: 0x18FF6600, message = { 0x00, RPM LSB, RPM MSB, 0x00, 0x00, 0x00, 0x00, 0x00 }, where RPM is the raw RPM of the motor.

• Engine OK signal to RZR CAN-bus. Address: 0x18FECA00, message = { 0x00, 0xFF, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF }. This turns the check-engine light off.

Note that as long as an RPM of 500 or more is sent to the RZR CAN-bus every 5 minutes, the power steering will stay on.