Set Speed Does Not Resume When The Resume/Accel Button Is Pressed (With The Cruise Control Main Switch Turned On) Brake Pedal

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

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

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

Do the cruise control combination switch test Service and Repair.

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

Also check for

Open circuit, loose or disconnected terminals: LT BLU or GRY wire