Run the check
Record the neutral and fully pressed browser value for each trigger.
Repeat slowly and compare left and right without changing mapping.
Check the model's own calibration instructions before changing firmware settings.
Read the result
A stable short range in one mapped axis is evidence to compare, not a hardware verdict.
Limits and next step
Controllers expose triggers as axes or buttons differently across mappings.
Repeat the check after changing one setting or connection. Keep a record of what changed before deciding whether the device needs service.