The bench drive in the written test procedure (5 V through 1 kOhm on SBU1) cannot switch a good harness box, so the written test would fail hardware that works.
From the Grok pain-radar digests, Oct 26-27 2026 (Oct 26 12:41 PM ET through Oct 27 7:41 AM ET digests plus the Haitch editions). Verified live 2026-10-27: issue/PR/thread read; title and state confirmed.