1. Disconnect the 4P connector (A) from the brake pedal position switch (B).

1. Check for continuity between the No. 1 and No. 2 terminals.
   - There should be continuity when the brake pedal is pressed.
   - There should be no continuity when the brake pedal is released.

1. Check for continuity between the No. 3 and No. 4 terminals (with cruise control).
   - There should be no continuity when the brake pedal is pressed.
   - There should be continuity when the brake pedal is released.

1. If necessary, adjust or replace the switch, or adjust the pedal height.