Civic EX Sedan L4-1668cc 1.7L SOHC (VTEC) MFI (2001)
14. Disconnect the 22P connector "A" from the gauge assembly.
15. Touch a probe to the BLU/WHT wire, and connect it to body ground through a voltmeter.
16. Slowly rotate one wheel with the other wheel blocked.
Does voltage pulse from 0 to about 5 V or more?
YES - Replace the speedometer assembly.
NO - Repair open in the BLU/WHT wire between the VSS and the speedometer.