Set Speed Does Not Cancel (Engine RPM Stays High) When the Clutch Pedal is Pressed

Set speed does not cancel (engine rpm stays high)when the clutch pedal is pressed (M/T model)

Check for PGM-FI DTCs Initial Inspection and Diagnostic Overview.

Do the clutch pedal position switch B test .

Do the cruise control input test Cruise Control (PCM) Input Test.
Test the clutch pedal position switch B signal input.

Also check for

Short to ground on the BRN wire