Retractor Switch

Remove the retractor switch. See RETRACTOR SWITCH under REMOVAL & INSTALLATION.
Check for continuity between the terminals in each switch position. See Fig 1 and Fig 2 .

Fig 1: Testing Retractor Switch Continuity

Courtesy of AMERICAN HONDA MOTOR CO., INC.

Fig 2: Identifying Retractor Switch Terminals

Courtesy of AMERICAN HONDA MOTOR CO., INC.