Civic HX Coupe L4-1668cc 1.7L SOHC (VTEC-E) MFI (2001)
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5. Reconnect the connectors to the under-dash fuse/relay box, and make sure these input tests at the appropriate connectors on the under-dash
fuse/relay box.
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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.
