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The B/D/H Series Honda ECUs run in generations, which use different connectors. Below is a stack of ECUs running from the newest generation at the top to the oldest generation at the bottom.  |
OBD2B (left 3 plugs used) |
OBD2A ECU
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OBD1 ECU
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OBD0 (JDM PR3 and PWO)
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