Set speed does not cancel when the brake pedal is pressed

Diagnostic procedure
  1. Check for diesel engine management system DTCs.
  2. Check the No. 3 (10 A) fuse in the under-dash fuse/relay box.
  3. Do the cruise control input test. Test the brake pedal position switch signal input.
  4. Do the brake pedal position switch test.
Also check for
  • Short to power on the BRN wire
  • Faulty brake pedal position switch