Secondary CAN troubleshooting tips

The below can be used in troubleshooting the CANmod.router secondary CAN (DB25).

Check your basic setup

  1. Check your pinouts: Verify that your CANmod.router, adapters and application pinouts match
  2. Check your wiring: Confirm that the CAN L/H wires are connected
  3. Check your power supply: Verify that you provide 5-26V via the DB9 or 5V via USB
  4. Verify that you are connecting to valid CAN buses - and that they are broadcasting data
  5. Check that the configured CAN-S bit-rates match your CAN buses (default is 250K)
  6. Check that the CAN bus is properly terminated (mainly relevant in test setups)

Try USB streaming via SavvyCAN

  1. Test if you are able to stream data via SavvyCAN as per our guide

Special cases

  • If logging from cars, you may be unable to log raw CAN data via the OBD2 connector. In this case, you can try recording OBD2 data instead by sending OBD2 requests. See e.g. the CANedge Intro/Record/OBD2 for guidance
  • If you record from a single CAN node, ensure that the CAN-S Mode is not set to ‘Monitoring’

If you’re still unable to record data, please contact us.