Vehicle does not decelerate or accelerate accordingly when the set/decel or resume/accel switch is pressed
Diagnostic procedure
Check for PGM-FI DTCs.
Do the cruise control combination switch test.
Do the cruise control input test.
Test the cruise control set/decel and resume/accel switch signal input.
Also check for
Open circuit, loose or disconnected terminals: YEL/RED, RED or LT GRN/BLK, BLU wire