Set Speed Does Not Resume When The Resume/accel Button Is Pressed (With The Cruise Control Main Button Pressed On

Set speed does not resume when the resume/accel button is pressed (with the cruise control main button pressed on, and set speed temporarily canceled by pressing the brake pedal)

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

Check the brake pedal position switch adjustment Adjustments.

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

Do the cruise control combination switch test Service and Repair.

Also check for

Faulty brake pedal position switch

Also check for

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