Front Wiper Motor Inspection

As illustrated, use a 12 V battery to connect its (+) terminal to terminal "A", and its (-) terminal to Black lead wire.
If motor rotates at a low revolution speed of 44 to 52 rpm, it is proper. For high speed check, connect battery (+) terminal to terminal "B", and its (-) terminal to Black lead wire. If motor rotates at a high revolution speed of 64 to 78 rpm, it is proper.

Fig 1: Identifying Battery Connected To Front Wiper Motor Terminals
Courtesy of SUZUKI OF AMERICA CORP.
Testing automatic stop action.
1. Connect 12 V battery (+) terminal to terminal "A" of wiper motor and (-) terminal to "Black" lead wire (1) and let the motor turn.
2. Disconnect terminal "A" from battery, and let the motor stop.
3. Connect terminal "A" and "C" with a jumper wire (2), and connect terminal "D" to battery (+) terminal. Observe the motor turns once again then stops at a given position.
4. Repeat a) thru c) several times and inspect if the motor stops at the given position every time.
  
  Fig 2: Identifying Black Lead Wire & Jumper Wire
  Courtesy of SUZUKI OF AMERICA CORP.