Direct on-truck measurement with the verified 1446 ICP PID: peak
cranking ICP 376 psi vs the ~500 psi firing threshold. FICM Main min
48.0 V (healthy), battery min 10.3 V (adequate). Diagnosis empirically
confirmed: high-pressure oil bleeds off during cranking. 376 psi is
"almost there" not zero, which fits a partial leak (IPR seat / oil rail
O-rings / partial STC crack) rather than a fully blown STC fitting.
- Capture the --crank output in crank-test-2026-06-30.txt
- Add EMPIRICAL CONFIRMATION section to diagnostics README
- Update handoff "resume at the truck" to lead with physical inspection
(IPR -> STC -> oil rail O-rings), since the OBD-side diagnosis is done
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
justin
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