Month: September 2019
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ECU Diagnostics – part 7 : ECU Maps and Mapping
Explains ECU maps and lookup tables, using Caterham MBE engine management as the context for how sensor data becomes control output.
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ECU Diagnostics – part 6 : Reading Material
Notes how The Car Hacker’s Handbook helped frame the Caterham ECU diagnostics work, especially CAN bus, ISO-TP, UDS, and request-response protocol ideas.
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ECU Diagnostics – part 5 : The Correlator Dead-end
Records an abandoned attempt to correlate Easimap data with CAN bus captures while reverse-engineering the Caterham MBE ECU protocol.
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ECU Diagnostics – part 4 : Wireshark Patching and OBD-II Results
Uses patched Wireshark decoding to inspect Caterham CAN bus captures and compare the useful diagnostic data available through OBD-II.
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ECU Diagnostics – part 3 : Test Setup
Sets up the Caterham ECU diagnostics test rig using the OBD port, Raspberry Pi, PiCAN interface, Easimap, and CAN bus capture hardware.