justin
e15e22a825
obd_reader.py: - Mode 22 plumbing: ELM.mode22() sends a 16-bit PID request, parses both positive (62 ..) and negative (7F 22 NRC) responses. - --ford runs a small TENTATIVE table of community-sourced Ford 6.0 PIDs (ICP/IPR/FICM/EBP/EOT). All printed with raw bytes for verification. - --pid XXXX probes a single PID and prints multiple candidate decodings (u8, u16, mV, temp, duty) so we can eyeball the right scaling. - --watch [N] streams ATRV + module voltage (PID 0142) for N seconds. Designed for capturing voltage sag during cranking. - --scan AAAA-BBBB brute-force scans Mode-22 PIDs with --scan-log PATH for output. Uses fast ELM timing (ATAT2, ATST19) for ~3.5 PIDs/sec. diagnostics/2026-06-29-no-start/: - Captured cranking voltage trace, full Mode-22 scan (1000-14FF -> 46 hits), and a session writeup. Working hypothesis: not batteries, not fuel -- ICP / FICM / CMP. FICM meter test still owed. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
118 lines
4.0 KiB
Plaintext
118 lines
4.0 KiB
Plaintext
================================================================
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OBD-II Code Reader - ELM327 / 6.0 Power Stroke triage
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================================================================
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Auto-selected port: COM5 (USB-SERIAL CH340 (COM5))
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(other ports seen: COM4, COM3 -- pass one as an argument if wrong)
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Opening COM5 @ 38400 baud ...
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Adapter : ELM327 v1.5
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Battery : 11.7V (key ON; healthy 6.0 KOEO ~12.4-12.7V)
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Connecting to vehicle (turn key to ON / RUN, engine off is fine)...
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Protocol: A6 (CAN=True)
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----------------------------------------------------------------
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TROUBLE CODES
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----------------------------------------------------------------
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STORED (mode 03):
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C0300 - (look up this code)
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PENDING (mode 07):
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C0701 - (look up this code)
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P0113 - Intake air temp (IAT) circuit HIGH
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PERMANENT (mode 0A):
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C3F0A - (look up this code)
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----------------------------------------------------------------
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KEY LIVE VALUES (key ON)
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----------------------------------------------------------------
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Engine RPM 0 rpm
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Coolant temp 33 C
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Intake air temp 35 C
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Intake MAP 98 kPa
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Engine load 0 %
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Accel/throttle pos n/a
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Module voltage 12.39 V
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================================================================
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WATCH MODE (30s) -- Ctrl-C to stop early
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================================================================
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ATRV = battery V at OBD port, VPCM = PCM/module V (PID 0142).
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TURN KEY TO START NOW (or whenever you're ready).
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t(s) ATRV VPCM
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-------- -------- --------
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0.00 11.7 12.39
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0.54 11.7 12.38
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1.09 11.7 12.36
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1.64 12.0 12.55
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2.17 11.9 12.52
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2.70 12.0 12.49
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3.25 12.1 12.66
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3.79 12.1 12.69
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4.33 12.0 12.55
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4.84 12.1 12.71
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5.35 12.0 12.60
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5.91 10.8 11.65
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6.42 11.2 11.59
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6.93 11.0 11.59
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7.45 11.1 11.48
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7.95 10.9 11.43
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8.47 10.8 11.70
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8.97 11.2 11.67
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9.49 11.0 11.70
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10.01 11.0 11.46
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10.52 11.0 11.59
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11.02 11.0 11.48
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11.54 11.0 11.62
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12.04 10.9 11.48
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12.55 11.0 11.40
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13.07 11.0 11.48
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13.57 10.9 11.40
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14.08 11.1 11.43
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14.59 10.9 11.46
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15.08 11.0 11.48
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15.59 11.0 11.59
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16.09 10.9 11.32
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16.61 11.5 12.17
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17.11 11.8 ?
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17.74 11.8 ?
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18.37 12.0 ?
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19.02 11.8 ?
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19.65 12.0 ?
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20.27 11.9 ?
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20.90 12.0 ?
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21.54 12.0 ?
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22.18 12.0 ?
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22.81 12.1 ?
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23.45 12.2 ?
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24.10 12.1 ?
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24.74 12.2 ?
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25.38 12.0 ?
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26.01 12.0 ?
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26.66 12.0 ?
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27.31 12.1 ?
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27.95 12.2 ?
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28.59 12.1 ?
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29.23 12.2 ?
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29.87 12.2 ?
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================================================================
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6.0 POWER STROKE -- NO-START QUICK TRIAGE
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================================================================
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NO-CODE no-start basics to check by hand on a 6.0:
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1. BATTERIES: both must be strong. Low voltage -> FICM won't boost ->
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no injector fire. Load-test both; ~12.5V+ at rest, hold while cranking.
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2. FICM voltage while cranking (~48V). The #1 6.0 cold no-start cause.
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3. ICP (Injection Control Pressure): needs ~500 psi to fire. Big leaks =
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STC fitting, oil rail O-rings, high-pressure oil hoses.
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4. FUEL: lift pump (HFCM) priming, fuel filters, water-in-fuel.
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5. CMP/CKP sensors (see codes above).
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6. Glow plugs/relay if it's cold out (won't stop start, but hard start).
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Done. (Re-run any time; codes persist until cleared.)
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