Vehicle Does Not Accelerate Accordingly When The Resume/accel Button Is Pressed

Vehicle does not accelerate accordingly when the resume/accel button is pressed

Check for PGM-FI DTCs, Initial Inspection and Diagnostic Overview, K24Z6 engine Initial Inspection and Diagnostic Overview, and body DTCs Diagnostic Aids.

Do the cruise control input test Cruise Control (PCM) Input Test.
Test the cruise control resume/accel switch signal input.

Do the cruise control combination switch test Service and Repair.

Also check for

Open circuit, loose or disconnected terminals: LT BLU, PUR