Connecting on /dev/cu.usbserial-A50285BI via kline, target 0xD5 source 0xF5, fast init...
Attempt 1/3 failed (timed out waiting for 1 bytes, got 0 (none)); retrying in 5s...
Attempt 2/3 failed (timed out waiting for 1 bytes, got 0 (none)); retrying in 5s...

Connection failed after 3 attempt(s): timed out waiting for 1 bytes, got 0 (none)

Things to check, in order:
  1. Ignition on, engine off. The ECU sleeps otherwise.
  2. Diagnostic connector pinout -- confirm before suspecting anything else.
  3. Try --init slow (5-baud) if fast init times out.
  4. If retries didn't help, the ignition may need a real power cycle --
     turn it off, wait a few seconds, back on, and re-run.
  5. On an ELM327 clone, KWP support is often broken; try the KKL cable.

(full session log: logs/tunie-info-20260822-142022.txt)