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 test Clutch Pedal Position Switch Test (With Cruise Control, M/T).

Do the cruise control input test Component Tests and General Diagnostics.
Test the clutch pedal position switch signal input.

Also check for

Short to ground on the PUR wire

Also check for

Faulty clutch pedal position switch