Civic Si L4-2.0L (2004)
6. Disconnect the M, P, K and J connectors from the under-dash fuse/relay box, and make these input tests at the connector.
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If any test indicates a problem, find and correct the cause, then recheck the system.
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If all the input tests prove OK, the multiplex control unit must be faulty. Replace the under-dash fuse/relay box assembly.
